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HomeMy WebLinkAbout23IWC8 - Old Fitch Hill Rd (110-032-000) Hydraulic Design Report 05112023HYDRAULIC DESIGN REPORT Norwich Golf Course Proposed Golf Cart Bridge Replacement Norwich Golf Course Cart/Pedestrian Bridge over Trading Cove Brook City of Norwich & Town of Montville, Connecticut May 1, 2023 Prepared By: Green Site Design, LLC Consulting Engineers 317 Main Street Norwich, CT 06360 Ph: 860-892-1380 http://www.greensitedesignllc.com Kyle Haubert, P.E. May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge i Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 HYDRAULIC DESIGN REPORT Norwich Golf Course - Proposed Golf Cart Bridge Replacement Norwich Golf Course Cart/Pedestrian Bridge over Trading Cove Brook City of Norwich & Town of Montville, Connecticut TABLE OF CONTENTS 1. Narrative .................................................................................................................................. 1 2. Hydrologic Conditions ............................................................................................................ 2 3. Hydraulic Conditions ............................................................................................................... 3 4. Temporary Water Handling ..................................................................................................... 6 5. Site Photographs ...................................................................................................................... 7 LIST OF FIGURES Figure 1: Location & Watershed Map Figure 2: Aerial Location & Watershed Map Figure 3: Hydraulic Section Locations Figure 4: Hydraulic Section Locations Figure 5: 1934 Aerial Map APPENDICES Appendix A: FEMA Data Appendix B: HEC-RAS Data Appendix C: Water Surface Profile Plots Appendix D: Cross Section Plots ABBREVIATIONS CF Cubic Foot CY Cubic Yard Gal. Gallons GPD Gallons per Day GPM Gallons per Minute LF Linear Foot LS Lump Sum SF Square Foot SY Square Yard VF Vertical Foot May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 1 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 1. Narrative The Norwich Golf Course is owned and operated by the City of Norwich, and is located at 685 New London Turnpike, Norwich, Connecticut. Portions of the course are located in the City of Norwich and the Town of Montville. The Town boundary is located along the centerline of Trading Cove Brook. The golf course is located on the east and west side of Trading Cove Brook. An existing wooden golf cart and pedestrian bridge is located on the property for use by golfers to cross Trading Cove Brook moving from the ninth green to the tenth tee as shown on the bridge replacement plans. The bridge is primarily used by golfers (pedestrians) and golf carts playing the course and occasional maintenance staff with light duty equipment. The Golf Course Authority is contemplating replacing this bridge due to the structural inadequacy and public safety concerns. A golf cart and pedestrian bridge had been installed in this general located since the golf course was constructed in the early 1920’s. A bridge is visible in this location on the 1934 aerial imagery as shown in Figure 5. A call-out for the bridge is not sown on the FEMA mapping and a structure is not shown on the Trading cove Brook Flood profile included in Appendix A; it is assumed that the bridge was not model modeled as part of the FEMA hydraulic analyses. The existing bridge is an approximately 7-wide wooden construction with eight 4”x4” posts with cross bracing located within the Trading Cove Brook stream channel. The posts are supported in concrete filled 5-gallon buckets resting on the channel bottom. Wood decking and an artificial turf surface are installed over the substructure. Cable tiebacks are attached to the bridge to secure it in place. Photographs of the existing structure are included in Section 5 of this report. The existing bridge provides no upstream detention. Maintenance staff has performed periodic repairs on the existing bridge, but it has become structurally inadequate and is in need of replacement. The proposed bridge replacement will occur at the same location and will not involve significant re-alignment of the existing golf cart path. The design for the new cart and pedestrian bridge will be a 7-wide structure that will span the Trading Cove Brook stream channel. New pile supported concrete foundations will be constructed on each side of the brook. A prefabricated steel bridge with wood decking will be installed on these foundations spanning the stream channel. Details for the new bridge design are included in the bridge replacement plans. The low chord of the new bridge will follow the slope of the existing bridge sloping from elevation 21.5 to the west and 25.8 to the east. The new bridge design will allow the existing natural stream bottom to remain. The existing timber post obstructions within the channel will be removed. May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 2 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 2. Hydrologic Conditions The area of concern for this hydrologic study consists of an approximately 13 square mile watershed for Trading Cove Brook located upstream of the existing wood pedestrian and golf cart bridge. Trading Cove Brook watershed is a tributary to the Thames River. Flow through the watershed is primarily north to south. The watershed limits are shown on Figure 1 and Figure 2. Peak discharge data for Trading Cove Brook was available from the FEMA Flood Insurance Study (FIS) of New London County (April 3, 2020 revision). Trading Cove Brook was studied by detailed methods from the confluence with the Thames River to approximately 300 feet upstream of the confluence with Goldmine Brook in Norwich, CT. The cart/pedestrian bridge location lies within the range of the FIS at approximately 3,000 feet upstream of the confluence with Trading Cove. As indicated in the ConnDOT Drainage Manual, Section 6.1.10 the FEMA FIS discharge rates are an acceptable for analysis where the regulatory floodway is adopted or where FEMA has established discharge for a watercourse. There is regulatory floodway and established discharges for Trading Cove Brook at the project location. An excerpt from FEMA Summary Discharge Table is included in Appendix A. There also is not any physical evidence or high water marks present to indicate the flow level associated with previous flood events. The FEMA FIS determined the peak discharge rate for Trading Cove Brook at the Confluence with Trading Cove. The cart/pedestrian bridge is located approximately 3,000 feet up stream of this discharge point. As a conservative measure, and to maintain consistency with the FEMA FIS the peak flow rates for this discharge point will be used. The peak flow rates for the project are summarized in Table 1. Table 1 Peak Discharge (cfs) Data Source & Location 50% Annual Chance (2-Year) 10% Annual Chance (10-Year) 4% Annual Chance (25-Year) 2% Annual Chance (50-Year) 1% Annual Chance (100-Year) 0.2% Annual Chance (500-Year) FIS: Trading Cove Brook @ confluence with Trading Cove 480 * 1,240 1,450 * 2,100 2,380 4,000 * Interpolated from Frequency Discharge Plot May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 3 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 3. Hydraulic Conditions The existing and proposed hydraulics for the bridge have been analyzed using the peak flow rate data was available from the FEMA Flood Insurance Study (FIS) of New London County for Trading Cove Brook as outlined in Section 2. A FEMA data request was submitted for the existing hydraulic model data for Trading Cove Brook. Existing hydraulic data is not available for this reach of Trading Cove Brook. Data is only available for sections “E” through “M”; the bridge is located midway between sections “C” and “D”. A copy of the response from FEMA is included in Appendix A Since existing cross section data was not available, the cross sections were modeled using field survey data at the bridge and the 2016 Connecticut Statewide LIDAR (1-ft contours) for the surrounding areas. The Connecticut Statewide LIDAR topography meets the standards of the USGS Base Specification 1.2, QL2 meeting 19.6 cm NVA. FEMA Roughness coefficients for the channel and overbank areas are included in Appendix A. The hydraulic analysis for the existing and proposed conditions have been performed using the Army Corps of Engineers HEC-RAS modeling software. It was assumed that the existing bridge was not modeled as part of the previous FEMA hydraulic analysis. The existing bridge was not included in the existing condition run for the current hydraulic analysis. The existing conditions run is therefore equivalent to the natural run. The HEC-RAS data is included in Appendix B. The water surface elevations for the existing/natural conditions for the 100-year and 10-year storm events are summarized in Table 2. Average channel velocities for the existing/natural conditions for the 100-year and 10-year storm events are summarized in Table 3. Water surface profile plots are included in Appendix C. Cross section plots are included in Appendix D. The proposed bridge structure was designed with the intent of allowing floodwaters to pass through the structure without negatively impacting upstream or downstream flood elevations. Due to the ground elevation on the west side of Trading Cove Brook it was not feasible to raise the structure above the flood elevation. The proposed prefabricated steel bridge will be constructed to allow floodwaters to pass through as shown on the bridge replacement plans. The bridge will be fixed to the new foundations to remain secure during a flood event and not float or become dislodged. The water surface elevations for the proposed conditions are summarized in Table 2. Water surface profile plots are included in Appendix C. Cross section plots are included in Appendix D. The proposed bridge will raise the upstream water elevation a maximum of 0.13-FT (1.6-inches) for May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 4 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 the 100-year storm event. This change in water surface elevation will have no negative impact to the upstream or downstream areas. Average channel velocities for the existing and proposed conditions are summarized in Table 3 for the 100-year and 10-year storm events. The upstream channel velocities are reduced slightly. The reduction in channel velocity will have no negative affect to the stream channel. Conclusions Based on available data, it does not appear that a bridge was modeled as part of the FEMA hydraulic study for Trading Cove Brook. However, a bridge has been in place over Trading Cove Brook in this location since the golf course was constructed in the 1920’s. Evidence of a bridge in this location is present on the 1934 aerial as shown on Figure 5. The existing wooden bridge that has been has been in place is constructed with wood posts within the brook channel, creating and obstruction for flow. The proposed bridge creates a negligible rise in the water surface elevations upstream of the bridge (in comparison to the natural condition) that will have no negative impact on Trading Cove Brook or the Surrounding area. The new clear span bridge over the brook will provide improvements to the flow by removing the existing obstructions within the channel. May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 5 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 Table 2 – Water Surface Elevations Water Surface Elevations: 100-Year Storm River Station Water Surface Elevation Existing / Natural Proposed Change (FT) 1177.100 FEMA "D-D" 27.19 27.24 0.05 689.900 25.60 25.73 0.13 679.630 25.50 25.63 0.13 670.310 Bridge 0.00 663.210 25.35 25.35 0.00 648.150 25.22 25.22 0.00 60.180 FEMA "C-C" 21.50 21.50 0.00 Water Surface Elevations: 10-Year Storm River Station Water Surface Elevation Existing / Natural Proposed Change (FT) 1177.100 FEMA "D-D" 25.55 25.58 0.03 689.900 24.17 24.27 0.10 679.630 24.10 24.20 0.10 670.310 Bridge 0.00 663.210 23.96 23.96 0.00 648.150 23.86 23.86 0.00 60.180 FEMA "C-C" 20.42 20.42 0.00 May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 6 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 Table 3 – Average Channel Velocities Average Channel Velocity: 100-Year Storm River Station Velocity (FT/S) Existing / Natural Proposed Change (FT/S) 1177.100 FEMA "D-D" 2.03 2.01 -0.02 689.900 4.35 4.24 -0.11 679.630 4.60 4.47 -0.13 670.310 Bridge 0.00 663.210 4.65 4.65 0.00 648.150 4.49 4.49 0.00 60.180 FEMA "C-C" 2.40 2.40 0.00 Average Channel Velocity: 10-Year Storm River Station Velocity (FT/S) Existing / Natural Proposed Change (FT/S) 1177.100 FEMA "D-D" 1.69 1.67 -0.02 689.900 3.20 3.11 -0.09 679.630 3.36 3.26 -0.10 670.310 Bridge 0.00 663.210 3.57 3.57 0.00 648.150 3.41 3.41 0.00 60.180 FEMA "C-C" 1.97 1.97 0.00 4. Temporary Water Handling Temporary water handling measures will not be needed during construction. Trading Cove Brook will be allowed to flow through the natural channel during construction. Foundations will be constructed on each side of the brook; access is available from each side without crossing the brook. The prefabricated bridge structure will be installed via a crane and will completely span the brook. The timber posts for the existing bridge will be removed by hand. May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 7 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 5. Site Photographs Picture 1: Existing cart/pedestrian bridge looking at upstream side (looking southeast) May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 8 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 Picture 2: Existing cart/pedestrian bridge looking at downstream side (looking northeast) May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 9 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 Picture 3: Trading Cove Brook upstream of the bridge May 1, 2023 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge 10 Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 Picture 4: Trading Cove Brook downstream of the bridge Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 FIGURES USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road Data; Natural Earth Data; U.S. Department of State Humanitarian Information Unit; and NOAA National Centers for Environmental Information, U.S. Coastal Relief Model. Data refreshed April, 2023. LOCATION & WATERSHED MAP HYDRAULIC DESIGN REPORT NORWICH GOLF COURSE BRDIGE TRADING COVE BROOK 1 SCALE: 1" = 5,000' DATE: 4/18/2023 FIGURE Norwich Golf Course Bridge Replacement ± Norwich Golf Course Bridge Watershed (13.04 sq. mi.) State of Connecticut, Maxar AERIAL LOCATION & WATERSHED MAP HYDRAULIC DESIGN REPORT NORWICH GOLF COURSE BRDIGE TRADING COVE BROOK 2 SCALE: 1" = 5,000' DATE: 4/18/2023 FIGURE Norwich Golf Course Bridge Replacement ± Norwich Golf Course Bridge Watershed (13.04 sq. mi.) Flood Profile Base Line State of Connecticut, Maxar, Microsoft HYDRAULIC SECTION LOCATIONS HYDRAULIC DESIGN REPORT NORWICH GOLF COURSE BRDIGE TRADING COVE BROOK 3 SCALE: 1" = 200' DATE: 4/18/2023 FIGURE Bridge ± Flood Profile Base Line "Trading Cove Brook" "D" "C" State of Connecticut, Maxar, Microsoft HYDRAULIC SECTION LOCATIONS HYDRAULIC DESIGN REPORT NORWICH GOLF COURSE BRDIGE TRADING COVE BROOK 4 SCALE: 1" = 100' DATE: 4/18/2023 FIGURE Existing & Proposed Bridge Location ± Flood Profile Base Line "Trading Cove Brook" 648.15 648.15 663.21 663.21 670.31 (Bridge) 670.31 (Bridge) 679.63 679.63 689.9 689.9 "D" 1177.1 "C" 60.18 Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 APPENDIX A FEMA DATA National Flood Hazard Layer FIRMette 0 500 1,000 1,500 2,000250 Feet Ü SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT SPECIAL FLOODHAZARD AREAS Without Base Flood Elevation (BFE)Zone A, V, A99With BFE or DepthZone AE, AO, AH, VE, AR Regulatory Floodway 0.2% Annual Chance Flood Hazard, Areasof 1% annual chance flood with averagedepth less than one foot or with drainageareas of less than one square mileZone X Future Conditions 1% Annual Chance Flood HazardZone X Area with Reduced Flood Risk due to Levee. See Notes.Zone X Area with Flood Risk due to LeveeZone D NO SCREENArea of Minimal Flood Hazard Zone X Area of Undetermined Flood HazardZone D Channel, Culvert, or Storm Sewer Levee, Dike, or Floodwall Cross Sections with 1% Annual Chance 17.5 Water Surface Elevation Coastal Transect Coastal Transect Baseline Profile Baseline Hydrographic Feature Base Flood Elevation Line (BFE) Effective LOMRs Limit of Study Jurisdiction Boundary Digital Data Available No Digital Data Available Unmapped This map complies with FEMA's standards for the use of digital flood maps if it is not void as described below.The basemap shown complies with FEMA's basemapaccuracy standards The flood hazard information is derived directly from theauthoritative NFHL web services provided by FEMA. This mapwas exported on 5/1/2023 at 9:15 AM and does notreflect changes or amendments subsequent to this date andtime. The NFHL and effective information may change orbecome superseded by new data over time. This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for regulatory purposes. Legend OTHER AREAS OF FLOOD HAZARD OTHER AREAS GENERAL STRUCTURES OTHER FEATURES MAP PANELS 8 B 20.2 The pin displayed on the map is an approximatepoint selected by the user and does not representan authoritative property location. 1:6,000 72°6'42"W 41°30'16"N 72°6'4"W 41°29'49"N Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020 From:Library Request To:K Haubert Subject:FEMA Data Request Date:Friday, December 2, 2022 10:46:45 AM fema-engineeringlibrary@fema.dhs.gov has sent you an attachment(s) using Baker eFTP Message Text: We only have data for cross sectins e thru m of Trading Cove Brook. This data has not been updated since the earlyu 1990s and is not available digitally. Thank you, Susan To retrieve your attachment(s), click on the secure link below. https://eFTP.mbakerintl.com/message/1yxc5zfFa2jCyF6NCv30y6 Access to this information will expire on 2022-12-09 First time user of the Michael Baker Intl. eFTP system? Click this link for assistance with the new user creation process. If you are unable to access this website, contact the Michael Baker IT Support Desk at 1-866-447-6333 or e-mail us at ITServices@mbakerintl.com Legal Disclaimer: This website is intended solely for use by the Michael Baker Corporation, its affiliates, clients, subcontractors, and other designated parties. All information utilized on this website is for designated recipients only. Any dissemination, distribution or copying of this material by any individual other than the said designated recipients is strictly prohibited. The Michael Baker Corporation, its affiliates and employees, makes no representation or warranty (express or implied) as to the merchantability or fitness for a particular purpose of any documents or information available from this website and therefore assumes neither legal liability nor responsibility for the accuracy, completeness, technical/ scientific quality or usefulness of said documents or information 48 Flooding Source Location Drainage Area (Square Miles) Peak Discharge (cfs) 10% Annual Chance 4% Annual Chance 2% Annual Chance 1% Annual Chance 0.2% Annual Chance Shunock River At Rocky Hollow Road (North Stonington) 8 596 * 917 1,165 1,775 Spaulding Pond Brook At Chestnut Avenue (Norwich) 0.98 140 * 230 300 370 Spaulding Pond Brook At Mohegan Park Road No. 2 (Norwich) 0.5 85 * 140 180 220 Susquetonscut Brook (Town of Franklin) At Franklin corporate limits 15.8 1,080 * 1,790 2,180 3,200 Susquetonscut Brook (Town of Franklin) At Meeting House Hill Road (Franklin) 12.7 930 * 1,540 1,870 2,750 Susquetonscut Brook (Town of Lebanon) At Franklin-Lebanon corporate limits 10.9 * * * 2,470 * Susquetonscut Brook (Town of Lebanon) Upstream of Route 207 5.65 * * * 1,900 * Susquetonscut Brook (Town of Lebanon) Upstream of Chappel Road (Lebanon) 4.41 * * * 1,500 * Susquetonscut Brook (Town of Lebanon) Upstream of confluence with Burgess Brook 2.53 * * * 822 * Tenmile River At confluence with Williamantic River 17 * * * 3,000 * Tenmile River Upstream of confluence with Giffords Brook 6.09 * * * 1,500 * Thames River * * * * * * Trading Cove Brook At confluence with Trading Cove 13.4 1,240 * 2,100 2,380 400 Trading Cove Brook At Connecticut Turnpike (State Route 52) 8.57 900 * 1,540 1,740 2,980 Tributary A At confluence with Birch Plain Creek 1.39 170 * 270 330 500 Tributary A At U.S. Route 1 0.90 150 * 250 300 440 Tributary A At junction at Norwichtown Brook 0.72 160 * 270 350 420 Tributary B (Norwich) At junction at Yantic River 0.98 240 * 430 560 670 68 Flooding Source Channel “n” Overbank “n” Norwichtown Brook 0.035 - 0.045 0.050 - 0.085 Oxoboxo Brook 0.009 - 0.060 0.030 - 0.080 Pachaug River 0.020 - 0.050 0.025 - 0.060 Pachaug River (Town of Voluntown) * * Pattagansett River 0.01 0.010 - 0.020 Pawcatuck River 0.025 - 0.055 0.04 - 0.18 Pine Swamp Brook 0.030 - 0.055 0.050 - 0.075 Quinebaug River (Jewett City, Griswold) 0.020 - 0.050 0.035 - 0.085 Quinebaug River (Lisbon) 0.030 - 0.050 0.040 - 0.080 Quinebaug River (Preston) 0.030 - 0.045 0.040 - 0.060 Shetucket River (Lisbon, Preston) 0.050 - 0.080 0.08 Shetucket River (Norwich) 0.040 - 0.060 0.060 - 0.120 Shetucket River (Sprague) 0.030 - 0.080 0.040 - 0.090 Shewville Brook 0.035 - 0.050 0.035 - 0.080 Shunock River (North Stonington) 0.030 - 0.055 0.030 - 0.100 Spaulding Pond Brook 0.040 - 0.060 0.060 - 0.120 Susquetonscut Brook (Town of Franklin) 0.035 - 0.060 0.06 - 0.12 Susquetonscut Brook (Town of Lebanon) * * Ten Mile River * * Thames River * * Trading Cove Brook 0.060 - 0.100 0.080 - 0.120 Tributary A 0.016 - 0.080 0.030 - 0.080 Tributary B 0.040 - 0.060 0.060 - 0.120 Tributary C 0.040 - 0.060 0.060 - 0.120 Tributary D 0.040 - 0.060 0.060 - 0.120 Tributary E 0.040 - 0.060 0.060 - 0.120 Tributary F 0.040 - 0.060 0.060 - 0.120 Whitford Brook (Groton) 0.015 - 0.050 0.030 - 0.090 Whitford Brook (North Stonington) 0.020 - 0.050 0.040 - 0.065 Williams Brook 0.024 - 0.060 0.035 - 0.080 Yantic River (Bozrah) 0.025 - 0.070 0.050 - 0.100 Yantic River (Franklin) 0.035 - 0.060 0.060 - 0.120 Yantic River (Norwich) 0.040 - 0.050 0.025 - 0.100 Yantic River East Channel 0.040 - 0.060 0.060 - 0.120 138 LOCATION FLOODWAY 1% ANNUAL CHANCE FLOOD WATER SURFACE ELEVATION (FEET NAVD88) CROSS SECTION DISTANCE1 WIDTH (FEET) SECTION AREA (SQ. FEET) MEAN VELOCITY (FEET/SEC) REGULATORY WITHOUT FLOODWAY WITH FLOODWAY INCREASE A 6,067 250 3,420 0.7 25.1 25.1 25.1 0.0 B 7,313 70 790 3.0 25.2 25.2 25.3 0.1 C 8,622 150 1,325 1.8 26.1 26.1 27.0 0.9 D 9,816 200 1,195 2.0 27.5 27.5 28.5 1.0 E 10,312 110 644 2.7 28.7 28.7 29.7 1.0 F 11,067 130 868 2.0 31.0 31.0 31.5 0.5 G 12,239 130 754 2.3 32.8 32.8 33.8 1.0 H 12,714 240 1,429 1.2 40.0 40.0 40.1 0.1 I 13,992 240 830 2.1 40.3 40.3 41.3 1.0 J 14,905 175 670 2.6 45.9 45.9 46.2 0.3 K 15,117 175 780 2.2 46.1 46.1 46.6 0.5 L 15,745 200 976 1.8 47.2 47.2 47.7 0.5 M 16,827 300 897 1.9 56.6 56.6 57.6 1.0 N 18,295 300 787 2.2 66.7 66.7 67.1 0.4 1Feet above confluence with Thames River TABLE 23 FEDERAL EMERGENCY MANAGEMENT AGENCY FLOODWAY DATA NEW LONDON COUNTY, CONNECTICUT FLOODING SOURCE: TRADING COVE BROOK (ALL JURISDICTIONS) Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 APPENDIX B HEC-RAS DATA HEC-RAS River: Trading Cove Bro Reach: RiverCL Reach River Sta Profile Plan Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl (cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) RiverCL 1177.1 10% Annual Chanc Existing Plan 1240.00 20.00 25.55 25.57 0.001465 1.69 1103.03 370.40 0.13 RiverCL 1177.1 10% Annual Chanc Proposed 1240.00 20.00 25.58 25.60 0.001423 1.67 1114.74 371.46 0.13 RiverCL 1177.1 2% Annual Chance Existing Plan 2100.00 20.00 26.84 26.87 0.001462 1.96 1606.17 407.20 0.14 RiverCL 1177.1 2% Annual Chance Proposed 2100.00 20.00 26.89 26.92 0.001412 1.93 1625.85 408.48 0.13 RiverCL 1177.1 1% Annual Chance Existing Plan 2380.00 20.00 27.19 27.22 0.001471 2.03 1750.41 417.10 0.14 RiverCL 1177.1 1% Annual Chance Proposed 2380.00 20.00 27.24 27.27 0.001422 2.01 1771.79 418.91 0.14 RiverCL 1177.1 0.2% Annual Chan Existing Plan 4000.00 20.00 28.86 28.91 0.001525 2.40 2507.63 470.87 0.15 RiverCL 1177.1 0.2% Annual Chan Proposed 4000.00 20.00 28.92 28.97 0.001473 2.37 2535.57 471.14 0.14 RiverCL 689.9 10% Annual Chanc Existing Plan 1240.00 18.96 24.17 24.28 0.006089 3.20 497.93 136.26 0.26 RiverCL 689.9 10% Annual Chanc Proposed 1240.00 18.96 24.27 24.37 0.005623 3.11 510.81 136.65 0.25 RiverCL 689.9 2% Annual Chance Existing Plan 2100.00 18.96 25.31 25.49 0.007519 4.09 656.52 143.33 0.30 RiverCL 689.9 2% Annual Chance Proposed 2100.00 18.96 25.43 25.60 0.006939 3.99 674.09 144.07 0.29 RiverCL 689.9 1% Annual Chance Existing Plan 2380.00 18.96 25.60 25.81 0.007974 4.35 699.31 145.13 0.31 RiverCL 689.9 1% Annual Chance Proposed 2380.00 18.96 25.73 25.92 0.007375 4.24 717.58 145.90 0.30 RiverCL 689.9 0.2% Annual Chan Existing Plan 4000.00 18.96 27.00 27.34 0.010219 5.64 907.65 152.92 0.36 RiverCL 689.9 0.2% Annual Chan Proposed 4000.00 18.96 27.14 27.46 0.009592 5.53 928.76 154.51 0.35 RiverCL 679.63 10% Annual Chanc Existing Plan 1240.00 18.92 24.10 24.22 0.006080 3.36 485.94 132.68 0.27 RiverCL 679.63 10% Annual Chanc Proposed 1240.00 18.92 24.20 21.76 24.31 0.005593 3.26 499.22 132.96 0.26 RiverCL 679.63 2% Annual Chance Existing Plan 2100.00 18.92 25.21 25.41 0.007712 4.32 636.55 138.74 0.31 RiverCL 679.63 2% Annual Chance Proposed 2100.00 18.92 25.34 22.44 25.52 0.007078 4.20 654.60 139.24 0.30 RiverCL 679.63 1% Annual Chance Existing Plan 2380.00 18.92 25.50 25.72 0.008208 4.60 676.80 139.86 0.32 RiverCL 679.63 1% Annual Chance Proposed 2380.00 18.92 25.63 22.64 25.84 0.007550 4.47 695.50 140.38 0.31 RiverCL 679.63 0.2% Annual Chan Existing Plan 4000.00 18.92 26.85 27.23 0.010836 6.01 869.93 146.56 0.38 RiverCL 679.63 0.2% Annual Chan Proposed 4000.00 18.92 27.00 23.61 27.36 0.010063 5.86 891.71 147.38 0.37 RiverCL 663.21 10% Annual Chanc Existing Plan 1240.00 18.97 23.96 24.10 0.007629 3.57 445.77 128.17 0.29 RiverCL 663.21 10% Annual Chanc Proposed 1240.00 18.97 23.96 24.10 0.007629 3.57 445.77 128.17 0.29 RiverCL 663.21 2% Annual Chance Existing Plan 2100.00 18.97 25.05 25.27 0.008922 4.44 636.61 216.19 0.33 RiverCL 663.21 2% Annual Chance Proposed 2100.00 18.97 25.05 25.27 0.008922 4.44 636.62 216.19 0.33 RiverCL 663.21 1% Annual Chance Existing Plan 2380.00 18.97 25.35 25.58 0.009175 4.65 702.15 234.01 0.33 RiverCL 663.21 1% Annual Chance Proposed 2380.00 18.97 25.35 25.58 0.009175 4.65 702.15 234.01 0.33 RiverCL 663.21 0.2% Annual Chan Existing Plan 4000.00 18.97 26.73 27.03 0.009920 5.55 1039.63 252.50 0.36 RiverCL 663.21 0.2% Annual Chan Proposed 4000.00 18.97 26.73 27.03 0.009920 5.55 1039.63 252.50 0.36 RiverCL 648.15 10% Annual Chanc Existing Plan 1240.00 18.85 23.86 23.99 0.007201 3.41 453.90 155.67 0.28 RiverCL 648.15 10% Annual Chanc Proposed 1240.00 18.85 23.86 23.99 0.007201 3.41 453.90 155.67 0.28 RiverCL 648.15 2% Annual Chance Existing Plan 2100.00 18.85 24.93 25.13 0.008445 4.26 650.25 202.87 0.32 RiverCL 648.15 2% Annual Chance Proposed 2100.00 18.85 24.93 25.13 0.008444 4.26 650.26 202.87 0.32 RiverCL 648.15 1% Annual Chance Existing Plan 2380.00 18.85 25.22 25.44 0.008800 4.49 715.62 238.78 0.33 RiverCL 648.15 1% Annual Chance Proposed 2380.00 18.85 25.22 25.44 0.008800 4.49 715.62 238.78 0.33 RiverCL 648.15 0.2% Annual Chan Existing Plan 4000.00 18.85 26.59 26.89 0.009590 5.40 1053.09 255.94 0.35 RiverCL 648.15 0.2% Annual Chan Proposed 4000.00 18.85 26.59 26.89 0.009590 5.40 1053.09 255.94 0.35 RiverCL 60.18 10% Annual Chanc Existing Plan 1240.00 17.00 20.42 18.89 20.46 0.005009 1.97 808.74 384.44 0.22 RiverCL 60.18 10% Annual Chanc Proposed 1240.00 17.00 20.42 18.89 20.46 0.005009 1.97 808.74 384.44 0.22 RiverCL 60.18 2% Annual Chance Existing Plan 2100.00 17.00 21.27 19.26 21.32 0.005003 2.32 1151.48 417.20 0.23 RiverCL 60.18 2% Annual Chance Proposed 2100.00 17.00 21.27 19.25 21.32 0.005003 2.32 1151.45 417.20 0.23 RiverCL 60.18 1% Annual Chance Existing Plan 2380.00 17.00 21.50 19.36 21.56 0.005001 2.40 1250.47 423.46 0.23 RiverCL 60.18 1% Annual Chance Proposed 2380.00 17.00 21.50 19.36 21.56 0.005001 2.40 1250.47 423.46 0.23 RiverCL 60.18 0.2% Annual Chan Existing Plan 4000.00 17.00 22.77 19.82 22.85 0.005005 2.83 1832.66 514.68 0.24 RiverCL 60.18 0.2% Annual Chan Proposed 4000.00 17.00 22.77 19.82 22.85 0.005005 2.83 1832.66 514.68 0.24 HEC-RAS Plan: Proposed River: Trading Cove Bro Reach: RiverCL Reach River Sta Profile E.G. US. Min El Prs BR Open Area Prs O WS Q Total Min El Weir Flow Q Weir Delta EG BR Sluice Coef (ft) (ft) (sq ft) (ft) (cfs) (ft) (cfs) (ft) RiverCL 670.31 10% Annual Chanc 24.31 25.45 133.55 1240.00 20.43 0.21 RiverCL 670.31 2% Annual Chance 25.52 25.45 133.55 2100.00 20.43 0.26 RiverCL 670.31 1% Annual Chance 25.84 25.45 133.55 2380.00 20.43 0.26 RiverCL 670.31 0.2% Annual Chan 27.36 25.45 133.55 4000.00 20.43 0.32                         HEC‐RAS HEC‐RAS 6.3.1 September 2022                           U.S. Army Corps of Engineers                            Hydrologic Engineering Center                                  609 Second Street                                        Davis, California                     X     X  XXXXXX    XXXX        XXXX       XX      XXXX             X     X  X        X    X       X   X     X  X    X             X     X  X        X            X   X    X    X   X             XXXXXXX  XXXX     X       XXX  XXXX     XXXXXX    XXXX             X     X  X        X            X  X     X    X        X             X     X  X        X    X       X   X    X    X        X             X     X  XXXXXX    XXXX        X    X   X    X   XXXXX                                                                                  PROJECT DATA Project Title: Trading Cove Brook Project File : TradingCoveBrook.prj Run Date and Time: 5/1/2023 4:02:48 PM Project in English units                                                                                  PLAN DATA Plan Title: Proposed Plan File : y:\PROJECTS\65 ‐ Norwich Golf Course  Bridge\Studies‐Calculations\HEC‐RAS\Final\TradingCoveBrook.p03            Geometry Title: Proposed Conditions            Geometry File : y:\PROJECTS\65 ‐ Norwich Golf Course  Bridge\Studies‐Calculations\HEC‐RAS\Final\TradingCoveBrook.g01            Flow Title    : FEMA FIS            Flow File     : y:\PROJECTS\65 ‐ Norwich Golf Course  Bridge\Studies‐Calculations\HEC‐RAS\Final\TradingCoveBrook.f01 Plan Summary Information: Number of:  Cross Sections =    6    Multiple Openings  =    0             Culverts       =    0    Inline Structures  =    0             Bridges        =    1    Lateral Structures =    0 Computational Information     Water surface calculation tolerance  =  0.01      Critical depth calculation tolerance =  0.01      Maximum number of iterations         =  20      Maximum difference tolerance         =  0.3      Flow tolerance factor                =  0.001  Computation Options     Critical depth computed only where necessary     Conveyance Calculation Method: At breaks in n values only     Friction Slope Method:         Average Conveyance     Computational Flow Regime:     Subcritical Flow                                                                                  FLOW DATA Flow Title: FEMA FIS Flow File : y:\PROJECTS\65 ‐ Norwich Golf Course  Bridge\Studies‐Calculations\HEC‐RAS\Final\TradingCoveBrook.f01 Flow Data (cfs)                                                                                                                 River           Reach           RS       10% Annual Chance2% Annual Chance1% Annual  Chance0.2% Annual Chance     Trading Cove BroRiverCL         1177.1               1240            2100             2380            4000                                                                                                                 Boundary Conditions                                                                                                            River           Reach           Profile                       Upstream                  Downstream                                                                                                                 Trading Cove BroRiverCL         10% Annual Chance                                     Normal S = 0.005     Trading Cove BroRiverCL         2% Annual Chance                                     Normal S = 0.005     Trading Cove BroRiverCL         1% Annual Chance                                     Normal S = 0.005     Trading Cove BroRiverCL         0.2% Annual Chance                                     Normal S = 0.005                                                                                                                                                                                             GEOMETRY DATA Geometry Title: Proposed Conditions Geometry File : y:\PROJECTS\65 ‐ Norwich Golf Course  Bridge\Studies‐Calculations\HEC‐RAS\Final\TradingCoveBrook.g01 CROSS SECTION           RIVER: Trading Cove Bro REACH: RiverCL            RS: 1177.1   INPUT Description:  Station Elevation Data    num=     344      Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev        0   28.78    7.27   28.04     7.5      28    7.89   27.96     8.7   27.86     9.32   27.78    13.8      27    21.5   26.05   21.94      26    22.4   25.95    30.56      25   31.45   24.88   37.65      24   37.95   23.95    43.2      23    49.52   22.45   49.78   22.42   50.08   22.39    50.8   22.33   51.72   22.25    52.25   22.21   52.84   22.16   53.49   22.11   54.18   22.06   54.92   22.01    55.04      22   61.94      22   69.58   21.71   75.47   21.48   76.85   21.45    77.23   21.45    78.8   21.44   79.35   21.43   83.53   21.33   83.71   21.33    83.89   21.34   90.67   21.28   95.69   21.25   96.34   21.25   98.32   21.27   100.59   21.29  101.07   21.29  106.87   21.38  118.55   21.59  122.11   21.64   137.43      22  141.16      22  144.79   22.01  152.18      22  152.33      22   153.88   21.36  155.32      21  157.03    20.2  157.42   20.03   157.5      20   159.72      20   166.7   20.01  170.35   20.01  175.78      20  188.59      20   189.26   20.05  189.31   20.05  189.41   20.06  190.59   20.16  194.67   20.49   200.56      21  202.73   21.55  202.87   21.57  203.02   21.58   203.2   21.59   203.38    21.6  203.74   21.61  203.99   21.67  206.64   21.65  207.06   21.71   207.21   21.73  212.03   21.95  214.61   21.92  218.83      22  219.48      22   224.73   22.01  224.94   22.01  231.31      22  235.87      22  263.81   22.92   265.01   22.96  265.57   22.96  267.49   22.97   267.5   22.97  272.13      23   282.03      23  286.15   23.31  287.36   23.34  288.03   23.38  288.64   23.41   289.21   23.42  294.57   23.64  298.24   23.68  299.45    23.7  300.54   23.71   304.08   23.75  304.95   23.77  305.47   23.77  310.91   23.92  310.99   23.92   311.87   23.94  312.17   23.94  312.71   23.95  313.84   23.97  316.93   23.99   317.41      24  343.99      24  346.66   24.01  347.96   24.01  350.15   24.15   356.33   24.57  356.43   24.57  363.51   24.66  363.61   24.66   368.7   24.75   375.54   24.89  379.42   24.99  380.08   24.99  380.24      25  392.85   25.42   394.22   25.47  395.39   25.52  395.73   25.53  396.05   25.54  407.59      26    422.7   26.86  425.36      27  427.21    27.1  439.04    27.5  443.79   27.64   444.66   27.69  444.83   27.68   445.5   27.71   445.8   27.71  446.09    27.7   446.27   27.71  446.45   27.72  446.68   27.71  446.87   27.71  447.06   27.72   448.25   27.72  450.83    27.7  451.24    27.7  451.44   27.69  451.64   27.69   451.83   27.68   453.4   27.62  454.27   27.59  455.78    27.6  458.44   27.58   461.11   27.61  466.23      28  468.76   28.45  470.96   28.88  471.46      29   473.14   29.51  474.83      30  475.05   30.05  478.86      31   480.5   31.43   482.79      32  485.08    32.7  485.92      33   486.3   33.15  488.86      34   490.13   34.38  491.99      35   493.7   35.51  495.29      36  497.57    36.7   498.52      37  499.86   37.52   500.5   37.78  500.99      38  501.98   38.33   503.85      39  504.53   39.25  506.28      40  507.03    40.3  508.93      41   511.05   41.84  511.46      42  512.84   42.55  513.95      43  514.48   43.26   516.22      44  517.33   44.53  518.34      45  520.22   45.99  520.24      46   520.48   46.09  521.96   46.66  522.93      47  523.32   47.14  526.18      48   529.37   48.93  529.67      49  534.39    49.8  535.48      50  540.19   50.04   558.35   50.17  573.27   50.07   577.1   50.04  577.65   50.04  578.02   50.03   578.57   50.03  579.71   50.02  580.32   50.04  580.53   50.04  580.74   50.03   581.23   50.01  581.33   50.01  581.64      50  585.96   49.97  586.35   49.97    586.4   49.96  587.34   49.96  589.14   49.95  590.99   49.95   591.1   49.94   591.95   49.94  593.88   49.92  593.99   49.91  594.13   49.91  595.85   49.89   597.96   49.88  598.58   49.88  610.13    49.5  610.31   49.47  610.55   49.43   610.69   49.41  610.91   49.41  611.03    49.4  614.73   49.03  614.94   49.01   615.02      49  615.16      49  615.24   48.99  615.62   48.99  615.76   48.98    616.2   48.98  617.36   48.96  618.69   48.95  618.91   48.95  620.12   48.96   622.12   48.83   622.6   48.82  622.84   48.82  625.23   48.72  625.81    48.7    628.3   48.59  628.92   48.57  629.52   48.54   629.7   48.53  629.86   48.52   630.01   48.51  633.59   48.42  638.87   48.19  642.43   48.01  643.11      48    652.6   47.14  653.98      47  655.79    46.9  656.13   46.88  666.01   46.32   667.01   46.28  669.94   46.16  671.23   46.12  671.72    46.1  671.78    46.1   672.59   46.07  672.61   46.07  673.17   46.05  673.21   46.04  673.49   46.04   673.77   46.03  674.07   46.02  674.46   46.02  675.02   46.01  682.61   46.01   683.37      46  683.93      46  684.79   45.97  685.58   45.93   686.7   45.88   689.57    45.7  689.76   45.69  690.07   45.69  692.64   45.55  693.61   45.54   694.39   45.51  694.67   45.51  695.76   45.52  696.42   45.51   697.1    45.5   702.75   45.38  708.16   45.17  708.37   45.18  708.59   45.18  709.07   45.22   709.68   45.19  710.56   45.18  711.22   45.18  711.65   45.19  712.05    45.2    712.4   45.22  718.32   45.67  718.71    45.7  720.06   45.81  720.47   45.84   720.57   45.85  720.99   45.85  721.46   45.87  721.98   45.88  723.03   45.89   723.71   45.87  728.56   45.82  729.41   45.78  730.09   45.74  739.56      45   740.63   44.86  740.92   44.83  743.21   44.71  748.81   44.31  749.34   44.28   749.93   44.22  750.56   44.14  750.69   44.13  750.85    44.1  751.46      44   752.74   43.77  756.94      43     760   42.56  760.39   42.51  760.66   42.49   760.96   42.47   761.5   42.41  762.54   42.37  764.75   42.26 Manning's n Values        num=       3      Sta   n Val     Sta   n Val     Sta   n Val        0     .12  152.18      .1  207.06     .12 Bank Sta: Left   Right    Lengths: Left Channel   Right     Coeff Contr.   Expan.         152.18  207.06            487.2   487.2   487.2             .1       .3 CROSS SECTION OUTPUT  Profile #10% Annual Chanc                                                                                                     E.G. Elev (ft)             25.60    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.03    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             25.58    Reach Len. (ft)           487.20     487.20      487.20      Crit W.S. (ft)                      Flow Area (sq ft)         439.65     284.68      390.41      E.G. Slope (ft/ft)      0.001423    Area (sq ft)              439.65     284.68      390.41      Q Total (cfs)            1240.00    Flow (cfs)                470.25     475.11      294.64      Top Width (ft)            371.46    Top Width (ft)            126.60      54.88      189.98      Vel Total (ft/s)            1.11    Avg. Vel. (ft/s)            1.07       1.67        0.75      Max Chl Dpth (ft)           5.58    Hydr. Depth (ft)            3.47       5.19        2.06      Conv. Total (cfs)        32877.1    Conv. (cfs)              12468.0    12597.1      7812.0      Length Wtd. (ft)          487.20    Wetted Per. (ft)          126.85      55.39      190.06      Min Ch El (ft)             20.00    Shear (lb/sq ft)            0.31       0.46        0.18      Alpha                       1.32    Stream Power (lb/ft s)      0.33       0.76        0.14      Frctn Loss (ft)             1.23    Cum Volume (acre‐ft)        6.27       5.50        6.29      C & E Loss (ft)             0.01    Cum SA (acres)              1.88       1.38        3.35                                                                                                    Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and  previous cross section.  This may indicate           the need for additional cross sections. CROSS SECTION OUTPUT  Profile #2% Annual Chance                                                                                                     E.G. Elev (ft)             26.92    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.03    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             26.89    Reach Len. (ft)           487.20     487.20      487.20      Crit W.S. (ft)                      Flow Area (sq ft)         612.30     356.40      657.16      E.G. Slope (ft/ft)      0.001412    Area (sq ft)              612.30     356.40      657.16      Q Total (cfs)            2100.00    Flow (cfs)                770.07     688.39      641.53      Top Width (ft)            408.48    Top Width (ft)            137.46      54.88      216.14      Vel Total (ft/s)            1.29    Avg. Vel. (ft/s)            1.26       1.93        0.98      Max Chl Dpth (ft)           6.89    Hydr. Depth (ft)            4.45       6.49        3.04      Conv. Total (cfs)        55884.0    Conv. (cfs)              20492.8    18319.1     17072.1      Length Wtd. (ft)          487.20    Wetted Per. (ft)          137.79      55.39      216.25      Min Ch El (ft)             20.00    Shear (lb/sq ft)            0.39       0.57        0.27      Alpha                       1.26    Stream Power (lb/ft s)      0.49       1.10        0.26      Frctn Loss (ft)             1.31    Cum Volume (acre‐ft)        8.58       6.96       10.10      C & E Loss (ft)             0.01    Cum SA (acres)              1.98       1.41        4.05                                                                                                    Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and  previous cross section.  This may indicate           the need for additional cross sections. CROSS SECTION OUTPUT  Profile #1% Annual Chance                                                                                                     E.G. Elev (ft)             27.27    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.03    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             27.24    Reach Len. (ft)           487.20     487.20      487.20      Crit W.S. (ft)                      Flow Area (sq ft)         661.27     375.77      734.75      E.G. Slope (ft/ft)      0.001422    Area (sq ft)              661.27     375.77      734.75      Q Total (cfs)            2380.00    Flow (cfs)                868.83     754.59      756.58      Top Width (ft)            418.91    Top Width (ft)            139.76      54.88      224.27      Vel Total (ft/s)            1.34    Avg. Vel. (ft/s)            1.31       2.01        1.03      Max Chl Dpth (ft)           7.24    Hydr. Depth (ft)            4.73       6.85        3.28      Conv. Total (cfs)        63109.3    Conv. (cfs)              23038.4    20009.0     20061.9      Length Wtd. (ft)          487.20    Wetted Per. (ft)          140.12      55.39      224.39      Min Ch El (ft)             20.00    Shear (lb/sq ft)            0.42       0.60        0.29      Alpha                       1.24    Stream Power (lb/ft s)      0.55       1.21        0.30      Frctn Loss (ft)             1.34    Cum Volume (acre‐ft)        9.21       7.36       11.29      C & E Loss (ft)             0.02    Cum SA (acres)              2.00       1.42        4.39                                                                                                    Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and  previous cross section.  This may indicate           the need for additional cross sections. CROSS SECTION OUTPUT  Profile #0.2% Annual Chan                                                                                                     E.G. Elev (ft)             28.97    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.05    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             28.92    Reach Len. (ft)           487.20     487.20      487.20      Crit W.S. (ft)                      Flow Area (sq ft)         906.69     468.14     1160.73      E.G. Slope (ft/ft)      0.001473    Area (sq ft)              906.69     468.14     1160.73      Q Total (cfs)            4000.00    Flow (cfs)               1412.62    1107.85     1479.53      Top Width (ft)            471.14    Top Width (ft)            152.18      54.88      264.08      Vel Total (ft/s)            1.58    Avg. Vel. (ft/s)            1.56       2.37        1.27      Max Chl Dpth (ft)           8.92    Hydr. Depth (ft)            5.96       8.53        4.40      Conv. Total (cfs)       104206.4    Conv. (cfs)              36801.1    28861.4     38544.0      Length Wtd. (ft)          487.20    Wetted Per. (ft)          152.79      55.39      264.31      Min Ch El (ft)             20.00    Shear (lb/sq ft)            0.55       0.78        0.40      Alpha                       1.21    Stream Power (lb/ft s)      0.85       1.84        0.51      Frctn Loss (ft)             1.48    Cum Volume (acre‐ft)       12.35       9.39       18.03      C & E Loss (ft)             0.03    Cum SA (acres)              2.22       1.47        5.20                                                                                                    Warning: The cross‐section end points had to be extended vertically for the computed  water surface. Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and  previous cross section.  This may indicate           the need for additional cross sections. CROSS SECTION           RIVER: Trading Cove Bro REACH: RiverCL            RS: 689.9    INPUT Description:  Station Elevation Data    num=     119      Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev        0      29    3.94      29   15.33   28.99   26.47      29   28.84      29    31.43    28.8   32.23    28.7   32.47   28.71   32.85   28.65   32.96   28.66    33.79   28.49   33.99   28.49   34.51   28.39   34.61   28.38   35.12   28.29    35.21   28.28   35.54   28.22   35.92   28.15   35.98   28.15   36.84      28    36.91      28    37.1   27.99   37.49   27.99    39.2   27.97   39.65   27.97    40.28   27.96   41.54   27.96   43.97   27.87   51.68   27.66   59.64   27.81    64.77   27.96   66.45   27.97   71.22      28   74.63   28.38   75.44    28.4    75.85   28.41   76.12   28.41   80.22   28.62   82.42   28.68   84.14   28.68    85.27    28.7    87.7   28.65   90.16   28.67   94.39   28.54  107.23      28   107.31      28  107.62   27.96  117.55      27  120.14   26.45  121.55      26   122.71   25.77   126.4      25  128.33   24.68  128.93   24.57  129.13   24.53   129.88   24.34  130.41   24.24  130.44   24.23  130.96   23.92  132.26   23.79   133.49   23.92   136.5    23.5  140.17   22.92   146.2   21.88  150.86   21.47   157.14   20.73  157.35   20.71  157.71   20.68  158.04   20.65  158.33   20.62   160.19   20.47  165.43   20.67  175.22    20.7  180.13   20.61     188   20.54   198.83   20.57  206.79   20.42  219.73   19.73   223.4    19.6  225.53   19.63   230.68   19.55  231.11   18.96  232.75      19  234.42      19  240.82   18.99   246.14   18.99  260.12   18.99  265.82  23.417  273.37   29.28  280.17   31.63   280.52   31.71  289.49   33.49   304.7   35.43  308.87   35.69  321.29   37.39   322.83   37.58  325.01   37.84  326.54   38.21  329.73   38.93  329.81   38.94   330.25      39  331.13    39.1   331.9    39.2  332.52   39.29  332.77   39.32   332.92   39.34  333.09   39.36  333.29   39.39  335.15   39.67  335.89   39.78   337.34      40  337.82   40.05   338.5   40.13  339.13   40.18  339.27   40.19   347.14      41  347.33   41.02  353.64      42  393.77      42 Manning's n Values        num=       3      Sta   n Val     Sta   n Val     Sta   n Val        0     .12  230.68      .1  265.82     .12 Bank Sta: Left   Right    Lengths: Left Channel   Right     Coeff Contr.   Expan.         230.68  265.82            10.27   10.27   10.27             .1       .3 CROSS SECTION OUTPUT  Profile #10% Annual Chanc                                                                                                     E.G. Elev (ft)             24.37    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.10    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             24.27    Reach Len. (ft)            10.27      10.27       10.27      Crit W.S. (ft)                      Flow Area (sq ft)         337.68     172.66        0.46      E.G. Slope (ft/ft)      0.005623    Area (sq ft)              337.68     172.66        0.46      Q Total (cfs)            1240.00    Flow (cfs)                702.12     537.67        0.21      Top Width (ft)            136.65    Top Width (ft)            100.41      35.14        1.09      Vel Total (ft/s)            2.43    Avg. Vel. (ft/s)            2.08       3.11        0.45      Max Chl Dpth (ft)           5.31    Hydr. Depth (ft)            3.36       4.91        0.42      Conv. Total (cfs)        16535.6    Conv. (cfs)               9362.9     7169.9         2.8      Length Wtd. (ft)           10.27    Wetted Per. (ft)          100.78      36.96        1.39      Min Ch El (ft)             18.96    Shear (lb/sq ft)            1.18       1.64        0.12      Alpha                       1.13    Stream Power (lb/ft s)      2.45       5.11        0.05      Frctn Loss (ft)             0.06    Cum Volume (acre‐ft)        1.93       2.94        4.10      C & E Loss (ft)             0.00    Cum SA (acres)              0.61       0.88        2.28                                                                                                    CROSS SECTION OUTPUT  Profile #2% Annual Chance                                                                                                     E.G. Elev (ft)             25.60    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.17    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             25.43    Reach Len. (ft)            10.27      10.27       10.27      Crit W.S. (ft)                      Flow Area (sq ft)         457.94     213.55        2.61      E.G. Slope (ft/ft)      0.006939    Area (sq ft)              457.94     213.55        2.61      Q Total (cfs)            2100.00    Flow (cfs)               1246.54     851.15        2.31      Top Width (ft)            144.07    Top Width (ft)            106.34      35.14        2.59      Vel Total (ft/s)            3.12    Avg. Vel. (ft/s)            2.72       3.99        0.89      Max Chl Dpth (ft)           6.47    Hydr. Depth (ft)            4.31       6.08        1.01      Conv. Total (cfs)        25209.1    Conv. (cfs)              14963.8    10217.5        27.7      Length Wtd. (ft)           10.27    Wetted Per. (ft)          106.82      36.96        3.28      Min Ch El (ft)             18.96    Shear (lb/sq ft)            1.86       2.50        0.34      Alpha                       1.12    Stream Power (lb/ft s)      5.06       9.98        0.30      Frctn Loss (ft)             0.07    Cum Volume (acre‐ft)        2.59       3.77        6.41      C & E Loss (ft)             0.00    Cum SA (acres)              0.62       0.91        2.83                                                                                                    CROSS SECTION OUTPUT  Profile #1% Annual Chance                                                                                                     E.G. Elev (ft)             25.92    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.19    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             25.73    Reach Len. (ft)            10.27      10.27       10.27      Crit W.S. (ft)                      Flow Area (sq ft)         490.05     224.09        3.45      E.G. Slope (ft/ft)      0.007375    Area (sq ft)              490.05     224.09        3.45      Q Total (cfs)            2380.00    Flow (cfs)               1425.72     950.83        3.45      Top Width (ft)            145.90    Top Width (ft)            107.78      35.14        2.98      Vel Total (ft/s)            3.32    Avg. Vel. (ft/s)            2.91       4.24        1.00      Max Chl Dpth (ft)           6.77    Hydr. Depth (ft)            4.55       6.38        1.16      Conv. Total (cfs)        27713.4    Conv. (cfs)              16601.5    11071.8        40.2      Length Wtd. (ft)           10.27    Wetted Per. (ft)          108.29      36.96        3.77      Min Ch El (ft)             18.96    Shear (lb/sq ft)            2.08       2.79        0.42      Alpha                       1.11    Stream Power (lb/ft s)      6.06      11.85        0.42      Frctn Loss (ft)             0.08    Cum Volume (acre‐ft)        2.77       4.00        7.16      C & E Loss (ft)             0.00    Cum SA (acres)              0.62       0.92        3.11                                                                                                    CROSS SECTION OUTPUT  Profile #0.2% Annual Chan                                                                                                     E.G. Elev (ft)             27.46    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.32    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             27.14    Reach Len. (ft)            10.27      10.27       10.27      Crit W.S. (ft)                      Flow Area (sq ft)         646.20     273.63        8.93      E.G. Slope (ft/ft)      0.009592    Area (sq ft)              646.20     273.63        8.93      Q Total (cfs)            4000.00    Flow (cfs)               2473.29    1512.72       14.00      Top Width (ft)            154.51    Top Width (ft)            114.58      35.14        4.79      Vel Total (ft/s)            4.31    Avg. Vel. (ft/s)            3.83       5.53        1.57      Max Chl Dpth (ft)           8.18    Hydr. Depth (ft)            5.64       7.79        1.86      Conv. Total (cfs)        40842.3    Conv. (cfs)              25253.7    15445.7       142.9      Length Wtd. (ft)           10.27    Wetted Per. (ft)          115.25      36.96        6.07      Min Ch El (ft)             18.96    Shear (lb/sq ft)            3.36       4.43        0.88      Alpha                       1.11    Stream Power (lb/ft s)     12.85      24.51        1.38      Frctn Loss (ft)             0.10    Cum Volume (acre‐ft)        3.67       5.25       11.48      C & E Loss (ft)             0.00    Cum SA (acres)              0.73       0.97        3.70                                                                                                    CROSS SECTION           RIVER: Trading Cove Bro REACH: RiverCL            RS: 679.63   INPUT Description:  Station Elevation Data    num=     156      Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev        0      29   24.33      29   27.29   29.11   29.52   29.13   30.37    29.1    32.59      29    36.4   28.57   47.02      28   47.41      28   52.58   27.98    53.25   27.98   56.22   27.97   58.87   27.95   60.47   27.95   67.52      28     71.2   28.49   71.32   28.51   71.63   28.56      72   28.61   72.26   28.65    72.62   28.71   75.43      29   91.48      29  102.43   28.36  105.75      28   106.32   27.98  107.41   27.96   112.7   27.62  116.76   27.41  119.62      27    122.7   26.28  123.74      26  124.35   25.82  126.84      25  129.82    24.5   130.77   24.39  131.69    23.9  132.57   23.85  133.88    23.7  136.08   23.51   140.75   22.72  148.19   21.69  148.39   21.67  149.15    21.6  149.34   21.59   150.25   21.51  151.02   21.44  152.72   21.28  154.25   21.15   159.4   20.72   160.61   20.62  161.43   20.55  162.05    20.5  162.53   20.46  162.82   20.45   163.09   20.45  163.32   20.44  163.54   20.44  163.74   20.43  163.94   20.43   164.12   20.42  164.48   20.42  164.65   20.41     165   20.41  177.81   20.59   178.28   20.59  178.75   20.58   179.2   20.58  184.32   20.42  198.38   20.47   206.59   20.59  207.77   20.35  208.49   20.23  217.21   19.72  220.24   19.61   225.18    19.5  226.34   18.96  226.55   18.92  230.99      19   231.5      19   233.67   18.99  242.83   18.98  243.15   18.98  249.03   18.99  250.88   18.99   252.74      19  256.02      19  261.09   20.66  264.47   24.65  265.38   25.72   267.49   27.37  270.45    28.4  282.42   30.83  283.24    30.9  284.08   30.96   284.97   30.99  285.29      31  296.39   35.59  297.92   36.22  298.37    36.4   298.59   36.49  298.72   36.54  298.81   36.58  298.87    36.6  298.93   36.62   298.96   36.63  298.99   36.64  299.02   36.64  299.05   36.65  299.07   36.65    299.1   36.66  299.12   36.66  299.15   36.67  302.75   36.96   318.5   37.97   318.99   38.03  319.05   38.04  319.33   38.07  319.88   38.14  329.55   39.32   341.75    40.6  344.34   40.86   344.7      41  345.92      41  346.12   41.01   346.39   41.01   346.6   41.02  347.27   41.04  348.49   41.09   348.6   41.09   350.17    41.1  354.81   41.68  355.04   41.71  355.33   41.74  355.67   41.77      357   41.86   357.2   41.88  357.42    41.9  357.66   41.92  357.93   41.95   358.25   41.97   358.3   41.97   358.6   41.98  358.91      42  360.55      42   361.06   41.99  361.32   41.98   361.8   41.96  361.82   41.96  365.01   41.77   365.05   41.78  373.72   41.96  375.24   41.99  375.58   41.99  375.71      42   400.96      42 Manning's n Values        num=       3      Sta   n Val     Sta   n Val     Sta   n Val        0     .12  225.18      .1  261.09     .12 Bank Sta: Left   Right    Lengths: Left Channel   Right     Coeff Contr.   Expan.         225.18  261.09            16.42   16.42   16.42             .1       .3 CROSS SECTION OUTPUT  Profile #10% Annual Chanc                                                                                                     E.G. Elev (ft)             24.31    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.11    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             24.20    Reach Len. (ft)             5.20       5.20        5.20      Crit W.S. (ft)             21.76    Flow Area (sq ft)         311.27     182.65        5.30      E.G. Slope (ft/ft)      0.005593    Area (sq ft)              311.27     182.65        5.30      Q Total (cfs)            1240.00    Flow (cfs)                638.63     596.00        5.37      Top Width (ft)            132.96    Top Width (ft)             94.05      35.91        3.00      Vel Total (ft/s)            2.48    Avg. Vel. (ft/s)            2.05       3.26        1.01      Max Chl Dpth (ft)           5.28    Hydr. Depth (ft)            3.31       5.09        1.77      Conv. Total (cfs)        16580.5    Conv. (cfs)               8539.4     7969.3        71.8      Length Wtd. (ft)            5.20    Wetted Per. (ft)           94.39      36.30        4.64      Min Ch El (ft)             18.92    Shear (lb/sq ft)            1.15       1.76        0.40      Alpha                       1.18    Stream Power (lb/ft s)      2.36       5.73        0.40      Frctn Loss (ft)             0.04    Cum Volume (acre‐ft)        1.85       2.90        4.10      C & E Loss (ft)             0.00    Cum SA (acres)              0.59       0.87        2.28                                                                                                    Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. CROSS SECTION OUTPUT  Profile #2% Annual Chance                                                                                                     E.G. Elev (ft)             25.52    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.19    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             25.34    Reach Len. (ft)             5.20       5.20        5.20      Crit W.S. (ft)             22.44    Flow Area (sq ft)         421.72     223.61        9.27      E.G. Slope (ft/ft)      0.007078    Area (sq ft)              421.72     223.61        9.27      Q Total (cfs)            2100.00    Flow (cfs)               1147.86     939.42       12.73      Top Width (ft)            139.24    Top Width (ft)             99.37      35.91        3.97      Vel Total (ft/s)            3.21    Avg. Vel. (ft/s)            2.72       4.20        1.37      Max Chl Dpth (ft)           6.42    Hydr. Depth (ft)            4.24       6.23        2.34      Conv. Total (cfs)        24960.4    Conv. (cfs)              13643.3    11165.9       151.3      Length Wtd. (ft)            5.20    Wetted Per. (ft)           99.86      36.30        6.13      Min Ch El (ft)             18.92    Shear (lb/sq ft)            1.87       2.72        0.67      Alpha                       1.16    Stream Power (lb/ft s)      5.08      11.44        0.92      Frctn Loss (ft)             0.06    Cum Volume (acre‐ft)        2.49       3.72        6.41      C & E Loss (ft)             0.00    Cum SA (acres)              0.59       0.90        2.83                                                                                                    Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. CROSS SECTION OUTPUT  Profile #1% Annual Chance                                                                                                     E.G. Elev (ft)             25.84    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.21    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             25.63    Reach Len. (ft)             5.20       5.20        5.20      Crit W.S. (ft)             22.64    Flow Area (sq ft)         450.91     234.12       10.47      E.G. Slope (ft/ft)      0.007550    Area (sq ft)              450.91     234.12       10.47      Q Total (cfs)            2380.00    Flow (cfs)               1317.19    1047.36       15.45      Top Width (ft)            140.38    Top Width (ft)            100.26      35.91        4.21      Vel Total (ft/s)            3.42    Avg. Vel. (ft/s)            2.92       4.47        1.48      Max Chl Dpth (ft)           6.71    Hydr. Depth (ft)            4.50       6.52        2.48      Conv. Total (cfs)        27390.5    Conv. (cfs)              15159.1    12053.6       177.8      Length Wtd. (ft)            5.20    Wetted Per. (ft)          100.80      36.30        6.52      Min Ch El (ft)             18.92    Shear (lb/sq ft)            2.11       3.04        0.76      Alpha                       1.16    Stream Power (lb/ft s)      6.16      13.60        1.12      Frctn Loss (ft)             0.06    Cum Volume (acre‐ft)        2.66       3.95        7.16      C & E Loss (ft)             0.00    Cum SA (acres)              0.59       0.91        3.11                                                                                                    Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. CROSS SECTION OUTPUT  Profile #0.2% Annual Chan                                                                                                     E.G. Elev (ft)             27.36    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.36    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             27.00    Reach Len. (ft)             5.20       5.20        5.20      Crit W.S. (ft)             23.61    Flow Area (sq ft)         591.19     283.15       17.37      E.G. Slope (ft/ft)      0.010063    Area (sq ft)              591.19     283.15       17.37      Q Total (cfs)            4000.00    Flow (cfs)               2305.75    1660.07       34.18      Top Width (ft)            147.38    Top Width (ft)            105.55      35.91        5.92      Vel Total (ft/s)            4.49    Avg. Vel. (ft/s)            3.90       5.86        1.97      Max Chl Dpth (ft)           8.08    Hydr. Depth (ft)            5.60       7.89        2.93      Conv. Total (cfs)        39874.6    Conv. (cfs)              22985.2    16548.6       340.7      Length Wtd. (ft)            5.20    Wetted Per. (ft)          106.26      36.30        8.71      Min Ch El (ft)             18.92    Shear (lb/sq ft)            3.50       4.90        1.25      Alpha                       1.15    Stream Power (lb/ft s)     13.63      28.73        2.47      Frctn Loss (ft)             0.08    Cum Volume (acre‐ft)        3.52       5.18       11.48      C & E Loss (ft)             0.00    Cum SA (acres)              0.70       0.96        3.70                                                                                                    Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. BRIDGE                  RIVER: Trading Cove Bro REACH: RiverCL            RS: 670.31   INPUT Description:  Distance from Upstream XS =     5.2 Deck/Roadway Width        =       8 Weir Coefficient          =     2.6 Upstream  Deck/Roadway Coordinates     num=     235      Sta Hi Cord Lo Cord     Sta Hi Cord Lo Cord     Sta Hi Cord Lo Cord        0   29.01             .13      29           15.82      29            22.07   29.66           23.25   29.83           23.51   29.86            24.05   29.92           24.65   29.97           24.68   29.97            24.98   29.99           24.99   29.99           25.21      30            27.49      30           27.81   29.98           28.11   29.97            28.41   29.94           29.38   29.78           29.95    29.7            30.45   29.62           30.88   29.56           31.52   29.45            33.78      29           36.28   28.74           36.67   28.71            37.42   28.65           44.85   28.03           46.77      28            51.71   27.99            51.8   27.99           52.01   27.98            52.68   27.98           54.67   27.97           55.86   27.97            58.41   27.98           58.73   27.99           60.16   27.99             61.7      28           73.43    28.9           74.53      29           101.88      29          102.02   28.99          102.03   28.99           102.03   28.98          102.04   28.98          104.92   28.75           107.39   28.62          110.78   28.42          111.39   28.38           112.09   28.33          113.22   28.22          115.35      28           115.37      28          115.43   27.98          120.26      27           121.97   26.51          123.54   26.07          123.79      26           125.63   25.51          127.32   25.07          127.59      25            127.8      25           129.1   24.85          131.28   23.68           133.39   23.55          136.53   23.21          141.77   22.75           146.18      22          146.62   21.96          147.64   21.88           148.84   21.78          150.26   21.66          151.92   21.53           153.86   21.38          156.08   21.21          156.19    21.2           157.98   21.06          158.11   21.06          159.23   21.01           159.44      21          160.47   20.96          160.76   20.96            161.7   20.92          162.05   20.91          162.92   20.88           163.33   20.87          164.13   20.85          164.59   20.84           165.33   20.81          165.83   20.81          166.53   20.78           167.06   20.78          167.72   20.76          168.28   20.75           168.91   20.73          169.49   20.72          170.09   20.71           170.69    20.7          171.27   20.68          171.83   20.66           172.45   20.66             173   20.64          173.62   20.64           174.18   20.62           174.8   20.61          175.36   20.59           175.97   20.59          182.73   20.39           188.3   20.13           199.46   20.36          212.55   20.81          212.97   20.81   20.01   266.29   26.37   25.57  266.34   26.39          266.36   26.39            270.1   26.71          271.06    26.9          272.09   27.13           273.26   27.37          274.11   27.55          275.52   27.83           276.15   27.97          277.85   28.31          278.23   28.39           280.27   28.79          280.36    28.8          280.91   28.91           281.58   29.25          282.29   29.64          282.67   29.81           284.31   30.58          285.62   31.23          288.45   32.44           290.04   32.26          291.48    32.2           293.1   32.17           294.93   32.15           296.9   32.17          296.97   32.16           298.58   31.96          298.77      32          298.79      32           300.78   32.37          300.99   32.41          301.24   32.47           303.14   32.82           303.5   32.88          304.77   33.06           305.24   33.13           306.4    33.3          306.97   33.39           308.03   33.54          308.99   33.68          309.65   33.78           310.54   33.91          311.26   34.02          312.09   34.14           312.87   34.26          313.65   34.37          314.47    34.5           315.21   34.61          316.07   34.74          316.79   34.84           317.67   34.98          318.37   35.08          319.27   35.21           319.95   35.31          320.86   35.45          321.54   35.55           322.45   35.68          323.15   35.78          324.04   35.92           324.75   36.02          325.63   36.15          326.37   36.25           327.21   36.38          338.62   37.62          351.74   38.91           351.99   39.22          352.08   39.49          353.41   39.75           353.77   39.85          355.91   39.88          356.24   39.89           356.46   39.89          356.96   39.91          357.03   39.91           357.48   39.93          357.68   39.94          358.07   39.96           358.78   39.96          358.95   39.97          359.04   39.97           359.08   39.98          359.26   39.98          359.32   39.99            359.4   39.99          359.42      40          359.47      40           359.61   40.04          359.66   40.05          360.12   40.17           362.82   40.68          363.34   40.79          363.59   40.85           363.74   40.88          364.51      41          364.53      41           364.79   41.02          365.24   41.06          365.27   41.06           366.79   41.14          366.86   41.14          367.29   41.16           367.33   41.16          367.52   41.18          367.61   41.17           367.75   41.19          367.88    41.2             368   41.21            368.7   41.17          368.85   41.18           370.9   41.23           374.28    41.3          374.76   41.32          375.25   41.34           375.73   41.36             377   41.42          384.59   41.96            385.4   41.96          385.97   41.97          389.12   41.97           390.01   41.98          391.02   41.98          396.05      42           406.07      42         Upstream Bridge Cross Section Data Station Elevation Data    num=     156      Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev        0      29   24.33      29   27.29   29.11   29.52   29.13   30.37    29.1    32.59      29    36.4   28.57   47.02      28   47.41      28   52.58   27.98    53.25   27.98   56.22   27.97   58.87   27.95   60.47   27.95   67.52      28     71.2   28.49   71.32   28.51   71.63   28.56      72   28.61   72.26   28.65    72.62   28.71   75.43      29   91.48      29  102.43   28.36  105.75      28   106.32   27.98  107.41   27.96   112.7   27.62  116.76   27.41  119.62      27    122.7   26.28  123.74      26  124.35   25.82  126.84      25  129.82    24.5   130.77   24.39  131.69    23.9  132.57   23.85  133.88    23.7  136.08   23.51   140.75   22.72  148.19   21.69  148.39   21.67  149.15    21.6  149.34   21.59   150.25   21.51  151.02   21.44  152.72   21.28  154.25   21.15   159.4   20.72   160.61   20.62  161.43   20.55  162.05    20.5  162.53   20.46  162.82   20.45   163.09   20.45  163.32   20.44  163.54   20.44  163.74   20.43  163.94   20.43   164.12   20.42  164.48   20.42  164.65   20.41     165   20.41  177.81   20.59   178.28   20.59  178.75   20.58   179.2   20.58  184.32   20.42  198.38   20.47   206.59   20.59  207.77   20.35  208.49   20.23  217.21   19.72  220.24   19.61   225.18    19.5  226.34   18.96  226.55   18.92  230.99      19   231.5      19   233.67   18.99  242.83   18.98  243.15   18.98  249.03   18.99  250.88   18.99   252.74      19  256.02      19  261.09   20.66  264.47   24.65  265.38   25.72   267.49   27.37  270.45    28.4  282.42   30.83  283.24    30.9  284.08   30.96   284.97   30.99  285.29      31  296.39   35.59  297.92   36.22  298.37    36.4   298.59   36.49  298.72   36.54  298.81   36.58  298.87    36.6  298.93   36.62   298.96   36.63  298.99   36.64  299.02   36.64  299.05   36.65  299.07   36.65    299.1   36.66  299.12   36.66  299.15   36.67  302.75   36.96   318.5   37.97   318.99   38.03  319.05   38.04  319.33   38.07  319.88   38.14  329.55   39.32   341.75    40.6  344.34   40.86   344.7      41  345.92      41  346.12   41.01   346.39   41.01   346.6   41.02  347.27   41.04  348.49   41.09   348.6   41.09   350.17    41.1  354.81   41.68  355.04   41.71  355.33   41.74  355.67   41.77      357   41.86   357.2   41.88  357.42    41.9  357.66   41.92  357.93   41.95   358.25   41.97   358.3   41.97   358.6   41.98  358.91      42  360.55      42   361.06   41.99  361.32   41.98   361.8   41.96  361.82   41.96  365.01   41.77   365.05   41.78  373.72   41.96  375.24   41.99  375.58   41.99  375.71      42   400.96      42 Manning's n Values        num=       3      Sta   n Val     Sta   n Val     Sta   n Val        0     .12  225.18      .1  261.09     .12 Bank Sta: Left   Right    Coeff Contr.   Expan.         225.18  261.09             .1       .3 Downstream  Deck/Roadway Coordinates     num=     235      Sta Hi Cord Lo Cord     Sta Hi Cord Lo Cord     Sta Hi Cord Lo Cord        0   29.01             .13      29           15.82      29            22.07   29.66           23.25   29.83           23.51   29.86            24.05   29.92           24.65   29.97           24.68   29.97            24.98   29.99           24.99   29.99           25.21      30            27.49      30           27.81   29.98           28.11   29.97            28.41   29.94           29.38   29.78           29.95    29.7            30.45   29.62           30.88   29.56           31.52   29.45            33.78      29           36.28   28.74           36.67   28.71            37.42   28.65           44.85   28.03           46.77      28            51.71   27.99            51.8   27.99           52.01   27.98            52.68   27.98           54.67   27.97           55.86   27.97            58.41   27.98           58.73   27.99           60.16   27.99             61.7      28           73.43    28.9           74.53      29           101.88      29          102.02   28.99          102.03   28.99           102.03   28.98          102.04   28.98          104.92   28.75           107.39   28.62          110.78   28.42          111.39   28.38           112.09   28.33          113.22   28.22          115.35      28           115.37      28          115.43   27.98          120.26      27           121.97   26.51          123.54   26.07          123.79      26           125.63   25.51          127.32   25.07          127.59      25            127.8      25           129.1   24.85          131.28   23.68           133.39   23.55          136.53   23.21          141.77   22.75           146.18      22          146.62   21.96          147.64   21.88           148.84   21.78          150.26   21.66          151.92   21.53           153.86   21.38          156.08   21.21          156.19    21.2           157.98   21.06          158.11   21.06          159.23   21.01           159.44      21          160.47   20.96          160.76   20.96            161.7   20.92          162.05   20.91          162.92   20.88           163.33   20.87          164.13   20.85          164.59   20.84           165.33   20.81          165.83   20.81          166.53   20.78           167.06   20.78          167.72   20.76          168.28   20.75           168.91   20.73          169.49   20.72          170.09   20.71           170.69    20.7          171.27   20.68          171.83   20.66           172.45   20.66             173   20.64          173.62   20.64           174.18   20.62           174.8   20.61          175.36   20.59           175.97   20.59          182.73   20.39           188.3   20.13           199.46   20.36          212.55   20.81          212.97   20.81   20.01   266.29   26.37   25.57  266.34   26.39          266.36   26.39            270.1   26.71          271.06    26.9          272.09   27.13           273.26   27.37          274.11   27.55          275.52   27.83           276.15   27.97          277.85   28.31          278.23   28.39           280.27   28.79          280.36    28.8          280.91   28.91           281.58   29.25          282.29   29.64          282.67   29.81           284.31   30.58          285.62   31.23          288.45   32.44           290.04   32.26          291.48    32.2           293.1   32.17           294.93   32.15           296.9   32.17          296.97   32.16           298.58   31.96          298.77      32          298.79      32           300.78   32.37          300.99   32.41          301.24   32.47           303.14   32.82           303.5   32.88          304.77   33.06           305.24   33.13           306.4    33.3          306.97   33.39           308.03   33.54          308.99   33.68          309.65   33.78           310.54   33.91          311.26   34.02          312.09   34.14           312.87   34.26          313.65   34.37          314.47    34.5           315.21   34.61          316.07   34.74          316.79   34.84           317.67   34.98          318.37   35.08          319.27   35.21           319.95   35.31          320.86   35.45          321.54   35.55           322.45   35.68          323.15   35.78          324.04   35.92           324.75   36.02          325.63   36.15          326.37   36.25           327.21   36.38          338.62   37.62          351.74   38.91           351.99   39.22          352.08   39.49          353.41   39.75           353.77   39.85          355.91   39.88          356.24   39.89           356.46   39.89          356.96   39.91          357.03   39.91           357.48   39.93          357.68   39.94          358.07   39.96           358.78   39.96          358.95   39.97          359.04   39.97           359.08   39.98          359.26   39.98          359.32   39.99            359.4   39.99          359.42      40          359.47      40           359.61   40.04          359.66   40.05          360.12   40.17           362.82   40.68          363.34   40.79          363.59   40.85           363.74   40.88          364.51      41          364.53      41           364.79   41.02          365.24   41.06          365.27   41.06           366.79   41.14          366.86   41.14          367.29   41.16           367.33   41.16          367.52   41.18          367.61   41.17           367.75   41.19          367.88    41.2             368   41.21            368.7   41.17          368.85   41.18           370.9   41.23           374.28    41.3          374.76   41.32          375.25   41.34           375.73   41.36             377   41.42          384.59   41.96            385.4   41.96          385.97   41.97          389.12   41.97           390.01   41.98          391.02   41.98          396.05      42           406.07      42         Downstream Bridge Cross Section Data Station Elevation Data    num=     227      Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev        0   29.61     .07   29.61     .19    29.6     .61   29.58    3.41   29.42     5.01   29.37    5.38   29.36    5.73   29.36     6.1   29.35    6.29   29.35     8.06    29.4     8.4    29.4    8.79   29.41   10.61   29.46   12.85    29.6    13.22   29.62   13.86   29.67   14.97   29.75    17.1      30   27.04      30    27.37   29.95    27.9   29.87   28.74   29.73   29.35   29.62   30.51   29.41    31.14   29.29   32.65      29   34.83    28.8   40.03    28.2   40.67   28.13    41.83      28    42.9      28   48.91   27.99   49.13   27.99   54.08      28    56.05      28    56.2   28.01   56.33   28.01   56.86   28.02   57.47   28.02    59.86   28.17   63.67   28.35   63.78   28.35    67.3   28.54   74.92   28.99    75.82      29  111.03      29  114.63   28.66   118.3      28  120.18   27.58   122.62      27  124.43   26.51  126.38      26  128.82   25.35  130.33   23.86   130.97   23.52  134.02   23.33  138.59   22.83   146.2   22.16  146.91   22.04   146.98   22.03  147.15   22.02  147.34      22  147.57   21.99  147.84   21.96   148.15   21.94  148.51   21.91  148.92   21.88  149.23   21.87  149.56   21.85   161.98   20.68  162.68   20.66  163.41   20.65  164.18   20.63  164.99   20.62   165.82    20.6  166.67   20.58  167.55   20.56  168.43   20.53  169.32   20.51   170.21   20.48   171.1   20.46  171.97   20.43  172.82    20.4  179.37   20.41   188.59      20  194.67   20.23  207.41   20.67  208.59   20.31  213.61   20.03   217.88   19.44  225.06   18.99  226.25   18.99  229.46   18.98  229.83   18.98   234.54   18.97   237.1   18.97  240.35   18.98  244.48   18.98  247.44   18.99   248.88   18.99  251.77      19  256.86   22.58  257.78   23.54  259.06   24.42   266.46   27.06  270.29   29.32     271   29.43  271.48   29.61  271.83   29.75   280.42   33.08  280.81   33.24  281.11   33.36  281.34   33.46  281.53   33.55   281.68   33.62  281.79   33.68  284.16   34.69  304.87   40.49  307.03   40.72   316.65   39.35  317.03   39.18  317.55   38.95  318.72   38.43  322.25   39.87   323.53   39.91  324.85      40  325.92      40  328.35   39.26  329.54      39   333.05   38.17  333.67   38.16   344.6   38.07  344.87   38.07  345.07   38.08   346.83   38.04  346.97   38.05  347.02   38.05  347.06   38.04  347.99      38   353.32   37.58  357.88   37.48  358.62   37.45   359.5   37.45   360.7   37.48   361.53   37.48  361.99   37.46  372.57      37   372.7   36.99  372.85   36.98   378.88   36.53  381.25   36.39  385.21    36.3  385.53   36.26   386.6   36.19   387.32   36.11  388.57      36  392.29   35.45  397.59      35  400.41   34.73   403.93   34.39  404.76   34.28  406.49   34.05  406.65   34.03  406.82      34   410.21   33.37  412.19      33  412.34   32.97   412.4   32.96  415.46   32.26   416.42      32  419.31   31.18  419.99      31  421.46   30.68  425.11      30    429.4   29.39   431.9      29  433.17   28.79  437.58      28  439.15   27.74   439.34    27.7  443.23      27  447.45   26.15  447.91   26.02  447.99      26   448.74    25.9  449.16   25.85  449.86   25.77  450.45   25.71  450.71   25.68   457.38      25  457.49   24.98  457.98   24.94  465.22   24.18  465.99   24.13   467.53      24  488.54      24  489.41   24.01  490.27   24.03  490.28   24.03    490.7   24.04  491.77   24.07  500.32    24.3  504.72   24.44  506.61   24.49   508.44   24.54  509.99   24.58  512.26   24.65  513.48   24.69  516.28   24.77   517.12   24.79  520.46   24.89  520.87    24.9  524.33      25  540.18      25   542.91   25.13  543.92   25.13  544.14   25.14   545.5   25.14  545.75   25.15   545.99   25.15  546.18   25.16  546.42   25.16  546.64   25.17  547.23   25.17   553.16   25.28  555.18   25.32 Manning's n Values        num=       3      Sta   n Val     Sta   n Val     Sta   n Val        0     .12  217.88      .1  256.86     .12 Bank Sta: Left   Right    Coeff Contr.   Expan.         217.88  256.86             .1       .3 Upstream Embankment side slope              =       0 horiz. to 1.0 vertical Downstream Embankment side slope            =       0 horiz. to 1.0 vertical Maximum allowable submergence for weir flow =     .98 Elevation at which weir flow begins         =         Energy head used in spillway design         =         Spillway height used in design              =         Weir crest shape                            = Broad Crested Number of Bridge Coefficient Sets =  1  Low Flow Methods and Data        Energy             Selected Low Flow Methods = Highest Energy Answer High Flow Method        Energy Only Additional Bridge Parameters        Add Friction component to Momentum        Do not add Weight component to Momentum        Class B flow critical depth computations use critical depth             inside the bridge at the upstream end        Criteria to check for pressure flow = Upstream energy grade line BRIDGE OUTPUT  Profile #10% Annual Chanc                                                                                                   E.G. US. (ft)                 24.31    Element                 Inside BR US  Inside BR  DS     W.S. US. (ft)                 24.20    E.G. Elev (ft)                24.27          24.14      Q Total (cfs)               1240.00    W.S. Elev (ft)                24.15          24.00      Q Bridge (cfs)               421.78    Crit W.S. (ft)                22.01          21.94      Q Weir (cfs)                           Max Chl Dpth (ft)              5.23           5.03      Weir Sta Lft (ft)                      Vel Total (ft/s)               2.74           3.01      Weir Sta Rgt (ft)                      Flow Area (sq ft)            453.32         412.01      Weir Submerg                           Froude # Chl                   0.21           0.24      Weir Max Depth (ft)                    Specif Force (cu ft)        1034.29         931.06      Min El Weir Flow (ft)         20.43    Hydr Depth (ft)                3.62           3.43      Min El Prs (ft)               25.45    W.P. Total (ft)              207.27         198.22      Delta EG (ft)                  0.21    Conv. Total (cfs)           10572.9         9318.4      Delta WS (ft)                  0.23    Top Width (ft)               125.16         120.08      BR Open Area (sq ft)         133.55    Frctn Loss (ft)                0.12           0.04      BR Open Vel (ft/s)             3.24    C & E Loss (ft)                0.00           0.00      BR Sluice Coef                         Shear Total (lb/sq ft)         1.88           2.30      BR Sel Method           Energy only    Power Total (lb/ft s)          5.14           6.92                                                                                                  Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. BRIDGE OUTPUT  Profile #2% Annual Chance                                                                                                   E.G. US. (ft)                 25.52    Element                 Inside BR US  Inside BR  DS     W.S. US. (ft)                 25.34    E.G. Elev (ft)                25.47          25.31      Q Total (cfs)               2100.00    W.S. Elev (ft)                25.27          25.09      Q Bridge (cfs)               470.46    Crit W.S. (ft)                22.69          22.59      Q Weir (cfs)                           Max Chl Dpth (ft)              6.35           6.12      Weir Sta Lft (ft)                      Vel Total (ft/s)               3.53           3.52      Weir Sta Rgt (ft)                      Flow Area (sq ft)            595.73         597.11      Weir Submerg                           Froude # Chl                   0.25           0.27      Weir Max Depth (ft)                    Specif Force (cu ft)        1746.46        1602.91      Min El Weir Flow (ft)         20.43    Hydr Depth (ft)                4.56           2.84      Min El Prs (ft)               25.45    W.P. Total (ft)              235.09         308.12      Delta EG (ft)                  0.26    Conv. Total (cfs)           15674.7        14835.6      Delta WS (ft)                  0.28    Top Width (ft)               130.75         210.37      BR Open Area (sq ft)         133.55    Frctn Loss (ft)                0.15           0.04      BR Open Vel (ft/s)             3.52    C & E Loss (ft)                0.00           0.00      BR Sluice Coef                         Shear Total (lb/sq ft)         2.84           2.42      BR Sel Method           Energy only    Power Total (lb/ft s)         10.01           8.53                                                                                                  Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. BRIDGE OUTPUT  Profile #1% Annual Chance                                                                                                   E.G. US. (ft)                 25.84    Element                 Inside BR US  Inside BR  DS     W.S. US. (ft)                 25.63    E.G. Elev (ft)                25.78          25.62      Q Total (cfs)               2380.00    W.S. Elev (ft)                25.55          25.38      Q Bridge (cfs)               483.66    Crit W.S. (ft)                22.85          22.77      Q Weir (cfs)                           Max Chl Dpth (ft)              6.63           6.41      Weir Sta Lft (ft)                      Vel Total (ft/s)               3.76           3.60      Weir Sta Rgt (ft)                      Flow Area (sq ft)            633.03         661.86      Weir Submerg                           Froude # Chl                   0.26           0.28      Weir Max Depth (ft)                    Specif Force (cu ft)        1970.27        1828.55      Min El Weir Flow (ft)         20.43    Hydr Depth (ft)                4.76           2.88      Min El Prs (ft)               25.45    W.P. Total (ft)              240.97         327.55      Delta EG (ft)                  0.26    Conv. Total (cfs)           17209.1        16808.5      Delta WS (ft)                  0.29    Top Width (ft)               132.94         229.60      BR Open Area (sq ft)         133.55    Frctn Loss (ft)                0.16           0.04      BR Open Vel (ft/s)             3.62    C & E Loss (ft)                0.00           0.00      BR Sluice Coef                         Shear Total (lb/sq ft)         3.14           2.53      BR Sel Method           Energy only    Power Total (lb/ft s)         11.79           9.09                                                                                                  Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is  less than 0.7 or greater than           1.4.  This may indicate the need for additional cross sections. BRIDGE OUTPUT  Profile #0.2% Annual Chan                                                                                                   E.G. US. (ft)                 27.36    Element                 Inside BR US  Inside BR  DS     W.S. US. (ft)                 27.00    E.G. Elev (ft)                27.28          27.08      Q Total (cfs)               4000.00    W.S. Elev (ft)                26.88          26.79      Q Bridge (cfs)               534.29    Crit W.S. (ft)                23.72          23.76      Q Weir (cfs)                           Max Chl Dpth (ft)              7.96           7.82      Weir Sta Lft (ft)                      Vel Total (ft/s)               4.87           3.98      Weir Sta Rgt (ft)                      Flow Area (sq ft)            821.04        1004.84      Weir Submerg                           Froude # Chl                   0.31           0.27      Weir Max Depth (ft)                    Specif Force (cu ft)        3274.66        3237.18      Min El Weir Flow (ft)         20.43    Hydr Depth (ft)                5.62           3.97      Min El Prs (ft)               25.45    W.P. Total (ft)              254.64         353.02      Delta EG (ft)                  0.32    Conv. Total (cfs)           25958.2        29483.5      Delta WS (ft)                  0.27    Top Width (ft)               146.20         253.20      BR Open Area (sq ft)         133.55    Frctn Loss (ft)                0.17           0.04      BR Open Vel (ft/s)             4.00    C & E Loss (ft)                0.03           0.00      BR Sluice Coef                         Shear Total (lb/sq ft)         4.78           3.27      BR Sel Method           Energy only    Power Total (lb/ft s)         23.29          13.02                                                                                                  CROSS SECTION           RIVER: Trading Cove Bro REACH: RiverCL            RS: 663.21   INPUT Description:  Station Elevation Data    num=     227      Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev        0   29.61     .07   29.61     .19    29.6     .61   29.58    3.41   29.42     5.01   29.37    5.38   29.36    5.73   29.36     6.1   29.35    6.29   29.35     8.06    29.4     8.4    29.4    8.79   29.41   10.61   29.46   12.85    29.6    13.22   29.62   13.86   29.67   14.97   29.75    17.1      30   27.04      30    27.37   29.95    27.9   29.87   28.74   29.73   29.35   29.62   30.51   29.41    31.14   29.29   32.65      29   34.83    28.8   40.03    28.2   40.67   28.13    41.83      28    42.9      28   48.91   27.99   49.13   27.99   54.08      28    56.05      28    56.2   28.01   56.33   28.01   56.86   28.02   57.47   28.02    59.86   28.17   63.67   28.35   63.78   28.35    67.3   28.54   74.92   28.99    75.82      29  111.03      29  114.63   28.66   118.3      28  120.18   27.58   122.62      27  124.43   26.51  126.38      26  128.82   25.35  130.33   23.86   130.97   23.52  134.02   23.33  138.59   22.83   146.2   22.16  146.91   22.04   146.98   22.03  147.15   22.02  147.34      22  147.57   21.99  147.84   21.96   148.15   21.94  148.51   21.91  148.92   21.88  149.23   21.87  149.56   21.85   161.98   20.68  162.68   20.66  163.41   20.65  164.18   20.63  164.99   20.62   165.82    20.6  166.67   20.58  167.55   20.56  168.43   20.53  169.32   20.51   170.21   20.48   171.1   20.46  171.97   20.43  172.82    20.4  179.37   20.41   188.59      20  194.67   20.23  207.41   20.67  208.59   20.31  213.61   20.03   217.88   19.44  225.06   18.99  226.25   18.99  229.46   18.98  229.83   18.98   234.54   18.97   237.1   18.97  240.35   18.98  244.48   18.98  247.44   18.99   248.88   18.99  251.77      19  256.86   22.58  257.78   23.54  259.06   24.42   266.46   27.06  270.29   29.32     271   29.43  271.48   29.61  271.83   29.75   280.42   33.08  280.81   33.24  281.11   33.36  281.34   33.46  281.53   33.55   281.68   33.62  281.79   33.68  284.16   34.69  304.87   40.49  307.03   40.72   316.65   39.35  317.03   39.18  317.55   38.95  318.72   38.43  322.25   39.87   323.53   39.91  324.85      40  325.92      40  328.35   39.26  329.54      39   333.05   38.17  333.67   38.16   344.6   38.07  344.87   38.07  345.07   38.08   346.83   38.04  346.97   38.05  347.02   38.05  347.06   38.04  347.99      38   353.32   37.58  357.88   37.48  358.62   37.45   359.5   37.45   360.7   37.48   361.53   37.48  361.99   37.46  372.57      37   372.7   36.99  372.85   36.98   378.88   36.53  381.25   36.39  385.21    36.3  385.53   36.26   386.6   36.19   387.32   36.11  388.57      36  392.29   35.45  397.59      35  400.41   34.73   403.93   34.39  404.76   34.28  406.49   34.05  406.65   34.03  406.82      34   410.21   33.37  412.19      33  412.34   32.97   412.4   32.96  415.46   32.26   416.42      32  419.31   31.18  419.99      31  421.46   30.68  425.11      30    429.4   29.39   431.9      29  433.17   28.79  437.58      28  439.15   27.74   439.34    27.7  443.23      27  447.45   26.15  447.91   26.02  447.99      26   448.74    25.9  449.16   25.85  449.86   25.77  450.45   25.71  450.71   25.68   457.38      25  457.49   24.98  457.98   24.94  465.22   24.18  465.99   24.13   467.53      24  488.54      24  489.41   24.01  490.27   24.03  490.28   24.03    490.7   24.04  491.77   24.07  500.32    24.3  504.72   24.44  506.61   24.49   508.44   24.54  509.99   24.58  512.26   24.65  513.48   24.69  516.28   24.77   517.12   24.79  520.46   24.89  520.87    24.9  524.33      25  540.18      25   542.91   25.13  543.92   25.13  544.14   25.14   545.5   25.14  545.75   25.15   545.99   25.15  546.18   25.16  546.42   25.16  546.64   25.17  547.23   25.17   553.16   25.28  555.18   25.32 Manning's n Values        num=       3      Sta   n Val     Sta   n Val     Sta   n Val        0     .12  217.88      .1  256.86     .12 Bank Sta: Left   Right    Lengths: Left Channel   Right     Coeff Contr.   Expan.         217.88  256.86            15.06   15.06   15.06             .1       .3 CROSS SECTION OUTPUT  Profile #10% Annual Chanc                                                                                                     E.G. Elev (ft)             24.10    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.14    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             23.96    Reach Len. (ft)            15.06      15.06       15.06      Crit W.S. (ft)                      Flow Area (sq ft)         261.50     183.31        0.96      E.G. Slope (ft/ft)      0.007629    Area (sq ft)              261.50     183.31        0.96      Q Total (cfs)            1240.00    Flow (cfs)                584.39     654.99        0.62      Top Width (ft)            128.17    Top Width (ft)             87.65      38.98        1.54      Vel Total (ft/s)            2.78    Avg. Vel. (ft/s)            2.23       3.57        0.65      Max Chl Dpth (ft)           4.99    Hydr. Depth (ft)            2.98       4.70        0.63      Conv. Total (cfs)        14196.7    Conv. (cfs)               6690.7     7498.9         7.1      Length Wtd. (ft)           15.06    Wetted Per. (ft)           88.04      40.13        2.08      Min Ch El (ft)             18.97    Shear (lb/sq ft)            1.41       2.18        0.22      Alpha                       1.18    Stream Power (lb/ft s)      3.16       7.77        0.14      Frctn Loss (ft)             0.11    Cum Volume (acre‐ft)        1.75       2.83        4.10      C & E Loss (ft)             0.00    Cum SA (acres)              0.56       0.86        2.28                                                                                                    CROSS SECTION OUTPUT  Profile #2% Annual Chance                                                                                                     E.G. Elev (ft)             25.27    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.21    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             25.05    Reach Len. (ft)            15.06      15.06       15.06      Crit W.S. (ft)                      Flow Area (sq ft)         357.74     225.84       53.04      E.G. Slope (ft/ft)      0.008922    Area (sq ft)              357.74     225.84       53.04      Q Total (cfs)            2100.00    Flow (cfs)               1053.11    1002.92       43.97      Top Width (ft)            216.19    Top Width (ft)             88.76      38.98       88.45      Vel Total (ft/s)            3.30    Avg. Vel. (ft/s)            2.94       4.44        0.83      Max Chl Dpth (ft)           6.08    Hydr. Depth (ft)            4.03       5.79        0.60      Conv. Total (cfs)        22232.2    Conv. (cfs)              11149.0    10617.7       465.5      Length Wtd. (ft)           15.06    Wetted Per. (ft)           89.60      40.13       89.31      Min Ch El (ft)             18.97    Shear (lb/sq ft)            2.22       3.13        0.33      Alpha                       1.27    Stream Power (lb/ft s)      6.55      13.92        0.27      Frctn Loss (ft)             0.13    Cum Volume (acre‐ft)        2.34       3.64        6.39      C & E Loss (ft)             0.00    Cum SA (acres)              0.56       0.89        2.81                                                                                                    Warning: Divided flow computed for this cross‐section. CROSS SECTION OUTPUT  Profile #1% Annual Chance                                                                                                     E.G. Elev (ft)             25.58    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.23    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             25.35    Reach Len. (ft)            15.06      15.06       15.06      Crit W.S. (ft)                      Flow Area (sq ft)         383.61     237.18       81.37      E.G. Slope (ft/ft)      0.009175    Area (sq ft)              383.61     237.18       81.37      Q Total (cfs)            2380.00    Flow (cfs)               1195.96    1103.52       80.51      Top Width (ft)            234.01    Top Width (ft)             89.06      38.98      105.98      Vel Total (ft/s)            3.39    Avg. Vel. (ft/s)            3.12       4.65        0.99      Max Chl Dpth (ft)           6.38    Hydr. Depth (ft)            4.31       6.08        0.77      Conv. Total (cfs)        24847.6    Conv. (cfs)              12486.1    11521.0       840.6      Length Wtd. (ft)           15.06    Wetted Per. (ft)           90.01      40.13      106.93      Min Ch El (ft)             18.97    Shear (lb/sq ft)            2.44       3.39        0.44      Alpha                       1.30    Stream Power (lb/ft s)      7.61      15.75        0.43      Frctn Loss (ft)             0.14    Cum Volume (acre‐ft)        2.50       3.87        7.14      C & E Loss (ft)             0.00    Cum SA (acres)              0.56       0.90        3.10                                                                                                    Warning: Divided flow computed for this cross‐section. Warning: The cross‐section end points had to be extended vertically for the computed  water surface. CROSS SECTION OUTPUT  Profile #0.2% Annual Chan                                                                                                     E.G. Elev (ft)             27.03    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.31    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             26.73    Reach Len. (ft)            15.06      15.06       15.06      Crit W.S. (ft)                      Flow Area (sq ft)         510.34     291.08      238.21      E.G. Slope (ft/ft)      0.009920    Area (sq ft)              510.34     291.08      238.21      Q Total (cfs)            4000.00    Flow (cfs)               1925.28    1614.29      460.43      Top Width (ft)            252.50    Top Width (ft)             94.26      38.98      119.27      Vel Total (ft/s)            3.85    Avg. Vel. (ft/s)            3.77       5.55        1.93      Max Chl Dpth (ft)           7.76    Hydr. Depth (ft)            5.41       7.47        2.00      Conv. Total (cfs)        40160.9    Conv. (cfs)              19330.3    16207.8      4622.8      Length Wtd. (ft)           15.06    Wetted Per. (ft)           95.39      40.13      121.96      Min Ch El (ft)             18.97    Shear (lb/sq ft)            3.31       4.49        1.21      Alpha                       1.33    Stream Power (lb/ft s)     12.50      24.91        2.34      Frctn Loss (ft)             0.15    Cum Volume (acre‐ft)        3.32       5.08       11.44      C & E Loss (ft)             0.00    Cum SA (acres)              0.66       0.95        3.68                                                                                                    Warning: Divided flow computed for this cross‐section. Warning: The cross‐section end points had to be extended vertically for the computed  water surface. CROSS SECTION           RIVER: Trading Cove Bro REACH: RiverCL            RS: 648.15   INPUT Description:  Station Elevation Data    num=     181      Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev        0   29.84    1.84    29.9    2.64   29.91    3.14   29.92    3.64   29.92     4.14   29.91     5.2   29.94   11.52   29.85    11.9   29.84   12.32   29.83    14.11   29.73   18.73    29.6   19.89    29.5   20.38   29.45   20.69   29.43    21.12    29.4   24.33      29    31.5    28.5   38.02      28   40.09   27.99    40.59   27.99   42.26      28   43.42      28    43.6   28.01   45.96   28.12    47.82   28.22   49.25   28.28   52.86   28.49   59.37   28.79   62.15   28.99    62.29      29  114.81      29  118.05    28.4     120      28  123.14   27.41   125.17      27  128.12   26.41     130      26  130.18   25.77  130.24   25.55    130.3   23.16  133.21   22.98  135.39   22.84     143   22.02   145.8   21.77   156.47   20.76   165.5   20.13  185.65    20.1  189.75   20.03   194.8   19.83   208.59    19.8  217.34    19.3   229.2   18.95  233.68   18.96  238.15   18.98   239.66   18.98  241.93   18.99   243.7   18.99  245.46      19  245.95   18.85   253.23   21.79  253.37   21.91  253.56   22.09  253.85   22.22  262.67   28.21   265.29   28.75  270.71   30.42  280.99   33.02  283.73   34.04  290.35   35.89   305.03   36.61  306.54   36.65  308.06   36.69  310.62   36.75  311.86   36.78    312.2   37.33  312.33   37.33  312.45   37.31  312.58   37.28  314.58      37   318.88   36.52  319.23   36.51  321.16   36.51  321.56    36.5  321.83   36.48   322.13   36.46   322.8    36.4  323.52   36.33  326.14      36  328.16   35.63   329.67   35.34  329.99   35.29  330.84   35.14  331.83      35  331.94   34.99   333.24   34.88  336.79   34.62  341.95   34.32  342.54   34.23  342.78   34.21   342.88   34.19  343.72      34  346.14   33.52  347.13   33.36  347.44   33.31   347.61   33.29  348.28   33.22  348.54   33.21  349.51   33.14  350.66   33.11   354.53      33     358    32.9  358.11    32.9   358.8   32.84  359.98   32.65   361.96   32.35  362.52    32.3  362.77   32.27  363.74   32.23  369.12      32   371.59   31.91  371.69    31.9  371.81   31.89  378.74   31.95  379.29   31.95   380.16   31.92  380.77   31.88  381.62    31.8  381.74   31.79  381.89   31.78   384.42   31.48  387.03   31.19  387.26   31.17  388.52   31.05  389.23      31   389.54   30.98  389.64   30.98  396.53   30.82  396.62   30.82  397.25   30.74   398.79   30.63  404.32      30  407.71   29.65   407.9   29.62  412.06   29.28   412.51   29.23  413.25   29.15  414.34      29  414.62   28.97  416.72   28.64   420.55   28.06  421.08      28  424.45   27.64  425.17   27.56  428.72      27   434.04   26.38  436.02   26.19   437.7      26  439.85   25.79  440.19   25.76   440.54   25.72  440.75    25.7  441.44   25.62  445.99      25  446.48   24.94   451.44      24  452.61   23.93  452.62   23.93  459.37    23.7  463.78   23.61   472.46   23.71  484.79   23.86  485.96   23.89  485.99   23.89  490.09      24   494.88      24   497.2   24.08  499.71   24.17  505.39   24.37  523.84      25   555.18      25 Manning's n Values        num=       3      Sta   n Val     Sta   n Val     Sta   n Val        0     .12  208.59      .1  253.23     .12 Bank Sta: Left   Right    Lengths: Left Channel   Right     Coeff Contr.   Expan.         208.59  253.23           587.97  587.97  587.97             .1       .3 CROSS SECTION OUTPUT  Profile #10% Annual Chanc                                                                                                     E.G. Elev (ft)             23.99    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.13    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             23.86    Reach Len. (ft)           587.97     587.97      587.97      Crit W.S. (ft)                      Flow Area (sq ft)         245.64     201.34        6.93      E.G. Slope (ft/ft)      0.007201    Area (sq ft)              245.64     201.34        6.93      Q Total (cfs)            1240.00    Flow (cfs)                549.29     686.78        3.93      Top Width (ft)            155.67    Top Width (ft)             78.31      44.64       32.72      Vel Total (ft/s)            2.73    Avg. Vel. (ft/s)            2.24       3.41        0.57      Max Chl Dpth (ft)           5.01    Hydr. Depth (ft)            3.14       4.51        0.21      Conv. Total (cfs)        14612.2    Conv. (cfs)               6472.9     8093.1        46.3      Length Wtd. (ft)          587.97    Wetted Per. (ft)           79.13      45.25       33.37      Min Ch El (ft)             18.85    Shear (lb/sq ft)            1.40       2.00        0.09      Alpha                       1.16    Stream Power (lb/ft s)      3.12       6.82        0.05      Frctn Loss (ft)             3.50    Cum Volume (acre‐ft)        1.66       2.77        4.10      C & E Loss (ft)             0.03    Cum SA (acres)              0.53       0.85        2.27                                                                                                    Warning: Divided flow computed for this cross‐section. Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and  previous cross section.  This may indicate           the need for additional cross sections. CROSS SECTION OUTPUT  Profile #2% Annual Chance                                                                                                     E.G. Elev (ft)             25.13    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.20    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             24.93    Reach Len. (ft)           587.97     587.97      587.97      Crit W.S. (ft)                      Flow Area (sq ft)         329.80     249.31       71.16      E.G. Slope (ft/ft)      0.008444    Area (sq ft)              329.80     249.31       71.16      Q Total (cfs)            2100.00    Flow (cfs)                963.22    1061.87       74.91      Top Width (ft)            202.87    Top Width (ft)             78.33      44.64       79.89      Vel Total (ft/s)            3.23    Avg. Vel. (ft/s)            2.92       4.26        1.05      Max Chl Dpth (ft)           6.08    Hydr. Depth (ft)            4.21       5.58        0.89      Conv. Total (cfs)        22852.5    Conv. (cfs)              10481.9    11555.4       815.2      Length Wtd. (ft)          587.97    Wetted Per. (ft)           80.20      45.25       80.99      Min Ch El (ft)             18.85    Shear (lb/sq ft)            2.17       2.90        0.46      Alpha                       1.26    Stream Power (lb/ft s)      6.33      12.37        0.49      Frctn Loss (ft)             3.76    Cum Volume (acre‐ft)        2.23       3.56        6.37      C & E Loss (ft)             0.04    Cum SA (acres)              0.53       0.87        2.78                                                                                                    Warning: Divided flow computed for this cross‐section. Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and  previous cross section.  This may indicate           the need for additional cross sections. CROSS SECTION OUTPUT  Profile #1% Annual Chance                                                                                                     E.G. Elev (ft)             25.44    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.23    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             25.22    Reach Len. (ft)           587.97     587.97      587.97      Crit W.S. (ft)                      Flow Area (sq ft)         352.09     262.01      101.51      E.G. Slope (ft/ft)      0.008800    Area (sq ft)              352.09     262.01      101.51      Q Total (cfs)            2380.00    Flow (cfs)               1094.00    1177.66      108.34      Top Width (ft)            238.78    Top Width (ft)             78.34      44.64      115.80      Vel Total (ft/s)            3.33    Avg. Vel. (ft/s)            3.11       4.49        1.07      Max Chl Dpth (ft)           6.37    Hydr. Depth (ft)            4.49       5.87        0.88      Conv. Total (cfs)        25370.2    Conv. (cfs)              11661.8    12553.5      1154.9      Length Wtd. (ft)          587.97    Wetted Per. (ft)           80.49      45.25      117.22      Min Ch El (ft)             18.85    Shear (lb/sq ft)            2.40       3.18        0.48      Alpha                       1.31    Stream Power (lb/ft s)      7.47      14.30        0.51      Frctn Loss (ft)             3.82    Cum Volume (acre‐ft)        2.38       3.78        7.11      C & E Loss (ft)             0.05    Cum SA (acres)              0.53       0.88        3.06                                                                                                    Warning: Divided flow computed for this cross‐section. Warning: The cross‐section end points had to be extended vertically for the computed  water surface. Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and  previous cross section.  This may indicate           the need for additional cross sections. CROSS SECTION OUTPUT  Profile #0.2% Annual Chan                                                                                                     E.G. Elev (ft)             26.89    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.30    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             26.59    Reach Len. (ft)           587.97     587.97      587.97      Crit W.S. (ft)                      Flow Area (sq ft)         460.41     323.17      269.51      E.G. Slope (ft/ft)      0.009590    Area (sq ft)              460.41     323.17      269.51      Q Total (cfs)            4000.00    Flow (cfs)               1733.38    1743.91      522.70      Top Width (ft)            255.94    Top Width (ft)             81.35      44.64      129.95      Vel Total (ft/s)            3.80    Avg. Vel. (ft/s)            3.76       5.40        1.94      Max Chl Dpth (ft)           7.74    Hydr. Depth (ft)            5.66       7.24        2.07      Conv. Total (cfs)        40847.0    Conv. (cfs)              17700.9    17808.4      5337.7      Length Wtd. (ft)          587.97    Wetted Per. (ft)           84.16      45.25      133.24      Min Ch El (ft)             18.85    Shear (lb/sq ft)            3.28       4.28        1.21      Alpha                       1.34    Stream Power (lb/ft s)     12.33      23.07        2.35      Frctn Loss (ft)             3.97    Cum Volume (acre‐ft)        3.15       4.97       11.35      C & E Loss (ft)             0.07    Cum SA (acres)              0.63       0.93        3.64                                                                                                    Warning: Divided flow computed for this cross‐section. Warning: The cross‐section end points had to be extended vertically for the computed  water surface. Warning: The energy loss was greater than 1.0 ft (0.3 m). between the current and  previous cross section.  This may indicate           the need for additional cross sections. CROSS SECTION           RIVER: Trading Cove Bro REACH: RiverCL            RS: 60.18    INPUT Description:  Station Elevation Data    num=     386      Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev     Sta    Elev        0   22.42   12.28    22.1   12.52    22.1   15.63      22   16.15      22    23.32   21.01   23.34   21.01    23.4      21   23.46   20.98    26.5      20    28.87   19.65   34.38      19   35.97   18.93   36.37   18.91   40.58   18.75    40.84   18.74   43.87   18.64   43.97   18.63   45.45    18.6   45.54   18.59     46.2   18.58   46.83   18.57   48.18   18.57   48.27   18.56   51.58   18.59    51.65   18.59   53.61   18.38   57.12      18   58.04      18   58.53   17.83    60.11   17.38   61.51      17   96.55      17  104.12   17.78   105.9      18   131.65      18  136.25   18.23  136.32   18.24  136.48   18.24  137.28   18.28   138.01   18.31   138.2   18.31  138.29   18.32  143.11   18.46  143.35   18.46   143.48   18.47   143.6   18.46  143.85   18.46  145.27   18.52  146.03   18.53   146.74   18.55  147.19   18.54  147.61   18.53  147.86   18.54  147.98   18.54    148.3   18.55  150.69   18.49  151.19   18.51   151.4   18.52  151.49   18.52   157.29   18.47  162.67   18.48  162.84   18.49  172.92   18.49   183.2   18.46    183.4   18.46   183.8   18.45  184.01   18.45  184.45   18.44  184.66   18.44   184.98   18.43  185.21   18.43  185.37   18.42  185.78   18.42  186.27   18.41   186.62   18.41  186.85    18.4  187.27    18.4  188.05   18.38  193.76   18.29    202.1   18.09  203.31   18.05   204.4      18  241.31      18  241.91   18.01   245.09      18  320.52      18  325.87   18.12  325.91   18.12  330.29   18.18   330.35   18.18  337.91   18.43  355.53      19  366.86      19  369.14   19.09   369.29   19.09  370.24   19.13  370.54   19.15  370.89   19.15  371.21   19.17   371.47   19.18  372.68   19.22  373.36   19.25   373.8   19.27   374.3   19.29   375.05   19.32  375.27   19.33  376.47    19.4  376.75   19.41  386.06   19.87   391.29    20.1  395.82    20.2   399.5   20.27     406   20.38  409.26   20.41   411.99   20.48  412.28   20.48  417.71   20.63   419.2   20.63  421.07    20.6      422   20.63  422.31   20.63   435.4   20.99  435.67      21  439.24   21.32   441.72   21.45  445.33   21.58  446.39    21.6  447.73   21.59  447.94    21.6   452.04   21.71  452.14   21.71  452.23   21.72  452.32   21.72   452.4   21.73   452.48   21.74  452.56   21.75  452.63   21.76  452.81   21.79  453.13   21.85   453.19   21.86  453.24   21.87  453.38   21.88  453.55   21.88  453.72   21.89   454.09   21.88  458.01      22  463.63    22.3  467.21   22.42  468.04   22.44   469.19   22.43     474   22.45  478.49   22.34  479.94   22.37  480.39   22.39   483.89   22.54  485.39   22.66  485.86   22.69  486.12    22.7  487.26   22.69   489.78   22.63  490.55   22.64  492.31   22.67  497.86   22.54  498.62   22.53   502.35   22.37  503.07   22.37   504.3   22.41  505.39   22.41   507.4   22.52   507.73   22.55  507.82   22.55  512.83   22.61  513.13   22.63  513.53   22.66   513.76   22.68  513.86   22.69  516.38   22.94  516.95   22.94  517.72   22.96   518.27   22.97  519.33      23  519.38   23.01  523.68   23.05  524.51   23.04   527.97      23  538.74      23  539.08   23.05  539.38    23.1  539.98   23.09   540.23   23.11  545.36   23.45  547.69    23.6  555.94   23.69  560.98   23.75   561.21   23.75  565.98   23.72  569.76   23.72  573.57   23.73  573.72   23.73   576.04   23.74  576.11   23.73  576.19   23.73  582.82   23.83  591.46   23.96   591.94   23.97  591.96   23.97  593.05   23.99  593.32      24   599.1      24   600.84   24.01  604.36   24.01  604.56   24.02  605.64   24.02  609.97   24.18   619.19    24.5  620.96   24.55  621.65   24.57  625.69   24.71  626.47   24.73   627.23   24.76  628.87    24.8  630.22   24.85  631.07   24.88  634.51   24.99   636.62      25  637.85   25.19  637.97   25.22  638.34    25.3  638.61   25.37   638.88   25.45  640.31      26  642.45   26.96  642.58      27  642.69   27.05   644.94      28  646.44   28.68  647.16      29  649.52   29.78  650.25      30   652.18   30.67  653.04      31  653.78   31.21  653.93   31.24  656.12      32   659.14   32.58  659.85   32.71  660.58   32.88  661.08      33  663.43   33.55   665.39      34  665.81   34.06  665.92   34.07  670.04   34.62   677.2      35   682.84   35.71  683.33   35.79  684.95      36  690.53    36.6   691.2   36.68   692.92   36.85  694.22      37  697.39   37.34  699.53   37.53  700.18    37.6   700.47   37.63   700.6   37.65  700.71   37.66  700.81   37.68  701.36   37.75    701.7   37.79  703.79      38  708.69   38.74  710.05   38.95   710.4      39   711.05   39.06  711.07   39.07  712.35   39.17  713.83   39.28  714.21   39.31   715.92   39.41  716.86   39.47  722.28   39.74  724.38   39.86  726.68      40   735.84   40.22  738.45    40.3  743.27    40.4  744.63   40.43  745.87   40.45   748.93   40.46   749.4   40.47   750.6   40.49  752.91   40.52  753.48   40.53   754.13   40.54  755.39   40.58  758.58   40.58  760.39   40.62  760.61   40.62   760.83   40.63  763.07   40.64  763.42   40.63  763.93   40.63  766.11   40.65   766.65   40.64  767.01   40.63   767.5   40.62  767.88   40.62  768.33   40.61   768.49   40.61   769.5   40.57  769.58   40.58  769.78   40.57  769.85   40.57   775.13   40.45  778.56   40.37  778.89   40.38  786.26   40.43   796.6   40.53   797.67   40.54  801.54    40.6  804.98   40.65  807.74   40.68  808.16   40.68   808.37   40.69  811.31   40.72  811.51   40.72  813.35   40.73  821.96      41   905.24      41  918.04   41.01  936.63   41.01   942.1      41  944.85      41   954.18   41.17  954.22   41.17  961.95    41.1  961.98    41.1  967.98   41.03   967.99   41.03  969.76      41  974.71   40.86  976.55   40.82   979.2   40.76   979.61   40.74  988.31   40.59  991.94   40.44  994.38   40.42  994.74   40.42    996.9   40.44  999.26   40.31  999.44   40.31 1000.05   40.28 1000.21   40.28  1002.31   40.21 1003.08   40.19 1004.66   40.15 1013.09    40.1 1013.24    40.1  1015.72   40.01 1015.99   40.01 1016.22      40 1016.71      40 1016.88   39.99   1016.9   39.99 1017.66   39.95 1018.68   39.88  1018.8   39.88 1018.84   39.87  1018.92   39.87 1025.12   39.46  1026.9   39.45 1028.84   39.42 1039.01   39.08  1039.36   39.07 1039.51   39.06 1039.73   39.06 1039.97   39.05 1041.34   39.01  1041.91      39 1042.01      39 1042.18   38.99 1042.89   38.97 1043.28   38.95  1046.97   38.85 Manning's n Values        num=       3      Sta   n Val     Sta   n Val     Sta   n Val        0     .12   12.52      .1   105.9     .12 Bank Sta: Left   Right    Coeff Contr.   Expan.          12.52   105.9             .1       .3 CROSS SECTION OUTPUT  Profile #10% Annual Chanc                                                                                                     E.G. Elev (ft)             20.46    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.04    Wt. n‐Val.                            0.100       0.120      W.S. Elev (ft)             20.42    Reach Len. (ft)                                             Crit W.S. (ft)             18.89    Flow Area (sq ft)                    208.58      600.16      E.G. Slope (ft/ft)      0.005009    Area (sq ft)                         208.58      600.16      Q Total (cfs)            1240.00    Flow (cfs)                           411.89      828.11      Top Width (ft)            384.44    Top Width (ft)                        80.70      303.74      Vel Total (ft/s)            1.53    Avg. Vel. (ft/s)                       1.97        1.38      Max Chl Dpth (ft)           3.42    Hydr. Depth (ft)                       2.58        1.98      Conv. Total (cfs)        17519.7    Conv. (cfs)                          5819.4     11700.3      Length Wtd. (ft)                    Wetted Per. (ft)                      81.07      303.80      Min Ch El (ft)             17.00    Shear (lb/sq ft)                       0.80        0.62      Alpha                       1.09    Stream Power (lb/ft s)                 1.59        0.85      Frctn Loss (ft)                     Cum Volume (acre‐ft)                                        C & E Loss (ft)                     Cum SA (acres)                                                                                                                                            CROSS SECTION OUTPUT  Profile #2% Annual Chance                                                                                                     E.G. Elev (ft)             21.32    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.06    Wt. n‐Val.                            0.100       0.120      W.S. Elev (ft)             21.27    Reach Len. (ft)                                             Crit W.S. (ft)             19.25    Flow Area (sq ft)                    278.28      873.18      E.G. Slope (ft/ft)      0.005003    Area (sq ft)                         278.28      873.18      Q Total (cfs)            2100.00    Flow (cfs)                           645.26     1454.74      Top Width (ft)            417.20    Top Width (ft)                        84.45      332.76      Vel Total (ft/s)            1.82    Avg. Vel. (ft/s)                       2.32        1.67      Max Chl Dpth (ft)           4.27    Hydr. Depth (ft)                       3.30        2.62      Conv. Total (cfs)        29688.9    Conv. (cfs)                          9122.4     20566.4      Length Wtd. (ft)                    Wetted Per. (ft)                      84.92      332.84      Min Ch El (ft)             17.00    Shear (lb/sq ft)                       1.02        0.82      Alpha                       1.07    Stream Power (lb/ft s)                 2.37        1.37      Frctn Loss (ft)                     Cum Volume (acre‐ft)                                        C & E Loss (ft)                     Cum SA (acres)                                                                                                                                            CROSS SECTION OUTPUT  Profile #1% Annual Chance                                                                                                     E.G. Elev (ft)             21.56    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.06    Wt. n‐Val.                            0.100       0.120      W.S. Elev (ft)             21.50    Reach Len. (ft)                                             Crit W.S. (ft)             19.36    Flow Area (sq ft)                    298.39      952.09      E.G. Slope (ft/ft)      0.005001    Area (sq ft)                         298.39      952.09      Q Total (cfs)            2380.00    Flow (cfs)                           715.07     1664.93      Top Width (ft)            423.46    Top Width (ft)                        86.15      337.30      Vel Total (ft/s)            1.90    Avg. Vel. (ft/s)                       2.40        1.75      Max Chl Dpth (ft)           4.50    Hydr. Depth (ft)                       3.46        2.82      Conv. Total (cfs)        33653.4    Conv. (cfs)                         10111.1     23542.3      Length Wtd. (ft)                    Wetted Per. (ft)                      86.65      337.40      Min Ch El (ft)             17.00    Shear (lb/sq ft)                       1.08        0.88      Alpha                       1.07    Stream Power (lb/ft s)                 2.58        1.54      Frctn Loss (ft)                     Cum Volume (acre‐ft)                                        C & E Loss (ft)                     Cum SA (acres)                                                                                                                                            CROSS SECTION OUTPUT  Profile #0.2% Annual Chan                                                                                                     E.G. Elev (ft)             22.85    Element                   Left OB    Channel    Right OB     Vel Head (ft)               0.08    Wt. n‐Val.                 0.120      0.100       0.120      W.S. Elev (ft)             22.77    Reach Len. (ft)                                             Crit W.S. (ft)             19.82    Flow Area (sq ft)           6.44     413.93     1412.29      E.G. Slope (ft/ft)      0.005005    Area (sq ft)                6.44     413.93     1412.29      Q Total (cfs)            4000.00    Flow (cfs)                  3.55    1169.77     2826.68      Top Width (ft)            514.68    Top Width (ft)             12.52      93.38      408.78      Vel Total (ft/s)            2.18    Avg. Vel. (ft/s)            0.55       2.83        2.00      Max Chl Dpth (ft)           5.77    Hydr. Depth (ft)            0.51       4.43        3.45      Conv. Total (cfs)        56541.7    Conv. (cfs)                 50.2    16535.2     39956.3      Length Wtd. (ft)                    Wetted Per. (ft)           12.88      93.91      408.93      Min Ch El (ft)             17.00    Shear (lb/sq ft)            0.16       1.38        1.08      Alpha                       1.08    Stream Power (lb/ft s)      0.09       3.89        2.16      Frctn Loss (ft)                     Cum Volume (acre‐ft)                                        C & E Loss (ft)                     Cum SA (acres)                                                                                                                                                                                                                             SUMMARY OF MANNING'S N VALUES  River:Trading Cove Bro                                                                         Reach          River Sta.       n1        n2        n3                                                                         RiverCL              1177.1             .12        .1       .12   RiverCL              689.9              .12        .1       .12   RiverCL              679.63             .12        .1       .12   RiverCL              670.31       Bridge                        RiverCL              663.21             .12        .1       .12   RiverCL              648.15             .12        .1       .12   RiverCL              60.18              .12        .1       .12                                                                                                                                                     SUMMARY OF REACH LENGTHS River: Trading Cove Bro                                                                         Reach          River Sta.      Left     Channel    Right                                                                       RiverCL              1177.1           487.2     487.2     487.2   RiverCL              689.9            10.27     10.27     10.27   RiverCL              679.63           16.42     16.42     16.42   RiverCL              670.31       Bridge                          RiverCL              663.21           15.06     15.06     15.06   RiverCL              648.15          587.97    587.97    587.97   RiverCL              60.18                                                                                                                                                                                          SUMMARY OF CONTRACTION AND EXPANSION COEFFICIENTS River: Trading Cove Bro                                                               Reach          River Sta.     Contr.    Expan.                                                             RiverCL              1177.1          .1        .3   RiverCL              689.9           .1        .3   RiverCL              679.63          .1        .3   RiverCL              670.31   Bridge                RiverCL              663.21          .1        .3   RiverCL              648.15          .1        .3   RiverCL              60.18           .1        .3                                                          Profile Output Table ‐ Standard Table 1                                                                                                                                                                             Reach         River Sta     Profile            Q Total   Min Ch El   W.S. Elev   Crit  W.S.   E.G. Elev   E.G. Slope   Vel Chnl   Flow Area   Top Width   Froude # Chl                                                      (cfs)        (ft)        (ft)         (ft)        (ft)      (ft/ft)     (ft/s)     (sq ft)        (ft)                                                                                                                                                                                              RiverCL       1177.1        10% Annual Chanc   1240.00       20.00       25.58                   25.60     0.001423       1.67     1114.74      371.46           0.13     RiverCL       1177.1        2% Annual Chance   2100.00       20.00       26.89                   26.92     0.001412       1.93     1625.85      408.48           0.13     RiverCL       1177.1        1% Annual Chance   2380.00       20.00       27.24                   27.27     0.001422       2.01     1771.79      418.91           0.14     RiverCL       1177.1        0.2% Annual Chan   4000.00       20.00       28.92                   28.97     0.001473       2.37     2535.57      471.14           0.14                                                                                                                                                                               RiverCL       689.9         10% Annual Chanc   1240.00       18.96       24.27                   24.37     0.005623       3.11      510.81      136.65           0.25     RiverCL       689.9         2% Annual Chance   2100.00       18.96       25.43                   25.60     0.006939       3.99      674.09      144.07           0.29     RiverCL       689.9         1% Annual Chance   2380.00       18.96       25.73                   25.92     0.007375       4.24      717.58      145.90           0.30     RiverCL       689.9         0.2% Annual Chan   4000.00       18.96       27.14                   27.46     0.009592       5.53      928.76      154.51           0.35                                                                                                                                                                               RiverCL       679.63        10% Annual Chanc   1240.00       18.92       24.20        21.76       24.31     0.005593       3.26      499.22      132.96           0.26     RiverCL       679.63        2% Annual Chance   2100.00       18.92       25.34        22.44       25.52     0.007078       4.20      654.60      139.24           0.30     RiverCL       679.63        1% Annual Chance   2380.00       18.92       25.63        22.64       25.84     0.007550       4.47      695.50      140.38           0.31     RiverCL       679.63        0.2% Annual Chan   4000.00       18.92       27.00        23.61       27.36     0.010063       5.86      891.71      147.38           0.37                                                                                                                                                                               RiverCL       670.31                            Bridge                                                                                                                                                                                                                                                                                              RiverCL       663.21        10% Annual Chanc   1240.00       18.97       23.96                   24.10     0.007629       3.57      445.77      128.17           0.29     RiverCL       663.21        2% Annual Chance   2100.00       18.97       25.05                   25.27     0.008922       4.44      636.62      216.19           0.33     RiverCL       663.21        1% Annual Chance   2380.00       18.97       25.35                   25.58     0.009175       4.65      702.15      234.01           0.33     RiverCL       663.21        0.2% Annual Chan   4000.00       18.97       26.73                   27.03     0.009920       5.55     1039.63      252.50           0.36                                                                                                                                                                               RiverCL       648.15        10% Annual Chanc   1240.00       18.85       23.86                   23.99     0.007201       3.41      453.90      155.67           0.28     RiverCL       648.15        2% Annual Chance   2100.00       18.85       24.93                   25.13     0.008444       4.26      650.26      202.87           0.32     RiverCL       648.15        1% Annual Chance   2380.00       18.85       25.22                   25.44     0.008800       4.49      715.62      238.78           0.33     RiverCL       648.15        0.2% Annual Chan   4000.00       18.85       26.59                   26.89     0.009590       5.40     1053.09      255.94           0.35                                                                                                                                                                               RiverCL       60.18         10% Annual Chanc   1240.00       17.00       20.42        18.89       20.46     0.005009       1.97      808.74      384.44           0.22     RiverCL       60.18         2% Annual Chance   2100.00       17.00       21.27        19.25       21.32     0.005003       2.32     1151.45      417.20           0.23     RiverCL       60.18         1% Annual Chance   2380.00       17.00       21.50        19.36       21.56     0.005001       2.40     1250.47      423.46           0.23     RiverCL       60.18         0.2% Annual Chan   4000.00       17.00       22.77        19.82       22.85     0.005005       2.83     1832.66      514.68           0.24                                                                                                                                                                             Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 APPENDIX C WATER SURFACE PROFILE PLOTS 020040060080010001820222426Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Main Channel Distance (ft)Elevation (ft)LegendWS 10% Annual Chanc - Existing PlanWS 10% Annual Chanc - ProposedGroundTrading Cove Bro RiverCL 02004006008001000120016182022242628Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Main Channel Distance (ft)Elevation (ft)LegendWS 1% Annual Chance - Existing PlanWS 1% Annual Chance - ProposedGroundTrading Cove Bro RiverCL Hydraulic Design Report Norwich GC Cart/Pedestrian Bridge Over Trading Cove Brook Green Site Design, LLC 317 Main Street · Norwich, CT 06360 APPENDIX D CROSS SECTION PLOTS 010020030040050015202530354045Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Station (ft)Elevation (ft)LegendWS 1% Annual Chance - ProposedWS 1% Annual Chance - Existing PlanWS 10% Annual Chanc - ProposedWS 10% Annual Chanc - Existing PlanGroundBank Sta.12.1.12 02004006008002025303540455055Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Station (ft)Elevation (ft)LegendWS 1% Annual Chance - ProposedWS 1% Annual Chance - Existing PlanWS 10% Annual Chanc - ProposedWS 10% Annual Chanc - Existing PlanGroundBank Sta.12.1.12 010020030040015202530354045Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Station (ft)Elevation (ft)LegendWS 1% Annual Chance - ProposedWS 1% Annual Chance - Existing PlanWS 10% Annual Chanc - ProposedWS 10% Annual Chanc - Existing PlanGroundBank Sta.12.1.12 010020030040050015202530354045Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Station (ft)Elevation (ft)LegendWS 1% Annual Chance - ProposedWS 10% Annual Chanc - ProposedGroundBank Sta.12.1.12 010020030040050060015202530354045Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Station (ft)Elevation (ft)LegendWS 1% Annual Chance - Existing PlanWS 1% Annual Chance - ProposedWS 10% Annual Chanc - ProposedWS 10% Annual Chanc - Existing PlanGroundBank Sta.12.1.12 0100200300400500600152025303540Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Station (ft)Elevation (ft)LegendWS 1% Annual Chance - Existing PlanWS 1% Annual Chance - ProposedWS 10% Annual Chanc - ProposedWS 10% Annual Chanc - Existing PlanGroundBank Sta.12.1.12 02004006008001000120015202530354045Trading Cove Brook Plan: 1) Existing Plan 5/1/2023 2) Proposed 5/1/2023 Station (ft)Elevation (ft)LegendWS 1% Annual Chance - Existing PlanWS 1% Annual Chance - ProposedWS 10% Annual Chanc - ProposedWS 10% Annual Chanc - Existing PlanGroundBank Sta.12.1.12