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Proposed 25year
1S A-CB13 3S A-CB14 6S A-DMH Stub 9S A-DMH Stub 12S A-CB15 15S A-CB16 17S A-RD 22S A-Basin 23S A-DMH Stub 24S A-Infil03 27S A-Infil02 30S A-Infil04 34S A-Deten05 35S A-Grove St A-CB17 CB Collecting Half of Road A-CB18 CB Collecting Half of Road A-CB19 Half of Road Into CB 19 A-CB19AB A-CB19B A-CB20 Half of Road Into CB 20 A-CB33 Parking Area into Catch Basin A-CB34 A-CB36 A-CB37 A-CB55 A-CB56 A-CB57 A-CB58 A-PD12A A-PD12ARoof A-RD12 A-RD2 Building 02Footprint A-RD3 Building 03 Footprint A-TD01 Trench Drain EARLE PDA-5A PDA-5B 24R DMH13 Stub 25R DMH13 Stub 26R DMH16 Stub 27R DMH23 Stub RD12 Roof Drain Roof2 Roof3 2PCB CB13 4PCB CB14 5PCB DMH13 10PCB DMH14 11PCB DMH15 13PCB CB15 14PCB CB16 16PCB DMH16 19ACB 19BCB 19PCB DMH22 20PCB DMH2321P Basin6 26P Deten02&03 29P Infil04 32P Deten05 BAS05 CB17CBCB18CB CB19CB CB20CB CB20 CB33CB CB34CB CB36CB CB37CB CB55CB CB56CB CB57CB CB58CB DMH17CB DMH19CB DMH20CB DMH in Roadway DMH21CB DMH24CB DMH25CB End Of Cross Country Drain-Line DMH30CB DMH36CB DMH37CB DMH54CB DMH55CB DMH56CB Stormwater from Undeveloped Area On Lot 12 DP-5CB Existing CB TD01CB DP 4 Grove Street Mill River Drainage Diagram for ProP120307Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Subcat Reach Pond Link ProP120307 Page 2Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres)CN Description (subcats) 0.485 39 >75% Grass cover, Good, HSG A (24S,27S,30S,35S) 3.855 61 >75% Grass cover, Good, HSG B (1S,3S,6S,9S,12S,15S,23S,24S,27S,30S,34S,35S,A-CB36 5.250 74 >75% Grass cover, Good, HSG C (22S,30S,34S,35S,A-CB17,A-CB18,A-CB19,A-CB19AB,A-C 0.342 74 >75% GrassGoodHSGC within AutoCADbuilding (A-RD12) 0.098 74 >75%Grass Good HSG C from12B (PDA-5B) 0.296 74 >75%GrassGoodHSGCwithin AutoCAD building (A-PD12A) 0.010 78 (A-CB33) 2.371 79 50-75% Grass cover, Fair, HSG C (A-CB55,A-CB56,A-CB57,A-CB58,A-TD01,PDA-5A) 0.324 79 Pond Grassed Area (PDA-5A) 0.363 79 Remainder of former parking (A-CB55,A-CB56,A-CB57,A-CB58) 0.735 98 Bldg Roof (A-PD12A) 0.283 98 Expand to Existing Boundary in Road (EARLE) 4.570 98 Impervious (1S,3S,6S,9S,12S,15S,23S,24S,27S,30S,34S) 3.580 98 Paved parking & roofs (A-CB17,A-CB18,A-CB19,A-CB19AB,A-CB19B,A-CB20,A-CB33,A-CB3 0.047 98 Paved parking & roofs From 12B (EARLE) 0.067 98 Paved parking & roofs from 12A (EARLE) 0.090 98 Pond Water Surface (PDA-5A) 1.606 98 Roof (9S,17S,22S,23S,27S,34S) 0.205 98 Roof (1/2) (6S,23S) 24.577 Type III 24-hr 25 Year Rainfall=5.15"ProP120307 Page 3Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Time span=0.00-24.00 hrs, dt=0.01 hrs, 2401 pointsRunoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Runoff Area=27,290 sf Runoff Depth>2.31"Subcatchment 1S: A-CB13 Flow Length=310' Slope=0.0150 '/' Tc=8.2 min CN=72 Runoff=1.56 cfs 0.121 af Runoff Area=7,256 sf Runoff Depth>3.31"Subcatchment 3S: A-CB14 Flow Length=190' Slope=0.0150 '/' Tc=6.0 min CN=83 Runoff=0.64 cfs 0.046 af Runoff Area=15,421 sf Runoff Depth>4.56"Subcatchment 6S: A-DMH Stub Tc=6.0 min CN=95 Runoff=1.74 cfs 0.135 af Runoff Area=26,616 sf Runoff Depth>4.68"Subcatchment 9S: A-DMH Stub Tc=6.0 min CN=96 Runoff=3.03 cfs 0.238 af Runoff Area=18,567 sf Runoff Depth>3.60"Subcatchment 12S: A-CB15 Flow Length=260' Slope=0.0150 '/' Tc=6.0 min CN=86 Runoff=1.78 cfs 0.128 af Runoff Area=17,710 sf Runoff Depth>3.31"Subcatchment 15S: A-CB16 Flow Length=250' Slope=0.0150 '/' Tc=6.0 min CN=83 Runoff=1.57 cfs 0.112 af Runoff Area=13,500 sf Runoff Depth>4.91"Subcatchment 17S: A-RD Tc=6.0 min CN=98 Runoff=1.56 cfs 0.127 af Runoff Area=37,184 sf Runoff Depth>3.40"Subcatchment 22S: A-Basin Tc=6.0 min CN=84 Runoff=3.38 cfs 0.242 af Runoff Area=69,194 sf Runoff Depth>3.60"Subcatchment 23S: A-DMH Stub Tc=6.0 min CN=86 Runoff=6.62 cfs 0.477 af Runoff Area=26,072 sf Runoff Depth>4.12"Subcatchment 24S: A-Infil03 Tc=6.0 min CN=91 Runoff=2.77 cfs 0.206 af Runoff Area=35,274 sf Runoff Depth>3.91"Subcatchment 27S: A-Infil02 Tc=6.0 min CN=89 Runoff=3.60 cfs 0.264 af Runoff Area=67,090 sf Runoff Depth>3.71"Subcatchment 30S: A-Infil04 Tc=6.0 min CN=87 Runoff=6.57 cfs 0.476 af Runoff Area=36,362 sf Runoff Depth>4.12"Subcatchment 34S: A-Deten05 Tc=6.0 min CN=91 Runoff=3.86 cfs 0.287 af Runoff Area=177,487 sf Runoff Depth>1.75"Subcatchment 35S: A-Grove St Flow Length=530' Tc=6.0 min CN=65 Runoff=8.02 cfs 0.595 af Runoff Area=8,626 sf Runoff Depth>4.12"Subcatchment A-CB17: CB Collecting Half of Road Tc=6.0 min CN=91 Runoff=0.92 cfs 0.068 af Type III 24-hr 25 Year Rainfall=5.15"ProP120307 Page 4Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Runoff Area=11,990 sf Runoff Depth>4.23"Subcatchment A-CB18: CB Collecting Half of Road Tc=6.0 min CN=92 Runoff=1.29 cfs 0.097 af Runoff Area=10,895 sf Runoff Depth>3.50"Subcatchment A-CB19: Half of Road Into CB 19 Flow Length=172' Tc=6.0 min CN=85 Runoff=1.02 cfs 0.073 af Runoff Area=16,350 sf Runoff Depth>3.50"Subcatchment A-CB19AB: Flow Length=308' Slope=0.0325 '/' Tc=9.5 min CN=85 Runoff=1.36 cfs 0.110 af Runoff Area=5,327 sf Runoff Depth>3.91"Subcatchment A-CB19B: Flow Length=100' Tc=6.0 min CN=89 Runoff=0.54 cfs 0.040 af Runoff Area=6,986 sf Runoff Depth>4.12"Subcatchment A-CB20: Half of Road Into CB 20 Flow Length=99' Slope=0.0325 '/' Tc=6.0 min CN=91 Runoff=0.74 cfs 0.055 af Runoff Area=11,848 sf Runoff Depth>4.79"Subcatchment A-CB33: Parking Area into Catch Basin Tc=6.0 min CN=97 Runoff=1.36 cfs 0.109 af Runoff Area=17,825 sf Runoff Depth>4.56"Subcatchment A-CB34: Tc=6.0 min CN=95 Runoff=2.01 cfs 0.156 af Runoff Area=11,255 sf Runoff Depth>4.56"Subcatchment A-CB36: Flow Length=150' Slope=0.0200 '/' Tc=6.0 min CN=95 Runoff=1.27 cfs 0.098 af Runoff Area=10,096 sf Runoff Depth>4.68"Subcatchment A-CB37: Flow Length=160' Slope=0.0200 '/' Tc=6.0 min CN=96 Runoff=1.15 cfs 0.090 af Runoff Area=17,381 sf Runoff Depth>3.81"Subcatchment A-CB55: Tc=6.0 min CN=88 Runoff=1.74 cfs 0.127 af Runoff Area=32,610 sf Runoff Depth>3.40"Subcatchment A-CB56: Flow Length=445' Tc=10.7 min CN=84 Runoff=2.54 cfs 0.212 af Runoff Area=35,648 sf Runoff Depth>3.40"Subcatchment A-CB57: Tc=6.0 min CN=84 Runoff=3.24 cfs 0.232 af Runoff Area=18,840 sf Runoff Depth>3.02"Subcatchment A-CB58: Flow Length=285' Tc=6.0 min CN=80 Runoff=1.53 cfs 0.109 af Runoff Area=44,900 sf Runoff Depth>4.12"Subcatchment A-PD12A: A-PD12ARoof Tc=6.0 min CN=91 Runoff=4.77 cfs 0.354 af Runoff Area=24,882 sf Runoff Depth>3.40"Subcatchment A-RD12: Tc=6.0 min CN=84 Runoff=2.26 cfs 0.162 af Runoff Area=4,641 sf Runoff Depth>4.91"Subcatchment A-RD2: Building 02Footprint Tc=6.0 min CN=98 Runoff=0.54 cfs 0.044 af Runoff Area=4,693 sf Runoff Depth>4.91"Subcatchment A-RD3: Building 03 Footprint Tc=6.0 min CN=98 Runoff=0.54 cfs 0.044 af Type III 24-hr 25 Year Rainfall=5.15"ProP120307 Page 5Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Runoff Area=2,178 sf Runoff Depth>4.68"Subcatchment A-TD01: Trench Drain Tc=6.0 min CN=96 Runoff=0.25 cfs 0.019 af Runoff Area=2.687 ac Runoff Depth>3.11"Subcatchment EARLE: Flow Length=1,303' Tc=12.1 min CN=81 Runoff=8.05 cfs 0.697 af Runoff Area=59,414 sf Runoff Depth>3.02"Subcatchment PDA-5A: Flow Length=220' Slope=0.1000 '/' Tc=7.4 min CN=80 Runoff=4.60 cfs 0.343 af Runoff Area=0.508 ac Runoff Depth>3.40"Subcatchment PDA-5B: Flow Length=225' Tc=7.6 min CN=84 Runoff=1.90 cfs 0.144 af Avg. Depth=0.41' Max Vel=5.82 fps Inflow=1.74 cfs 0.135 afReach 24R: DMH13 StubD=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=1.74 cfs 0.135 af Avg. Depth=0.56' Max Vel=6.71 fps Inflow=3.03 cfs 0.238 afReach 25R: DMH13 StubD=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=3.03 cfs 0.238 af Avg. Depth=0.38' Max Vel=5.66 fps Inflow=1.56 cfs 0.127 afReach 26R: DMH16 Stub D=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=1.56 cfs 0.127 af Avg. Depth=0.79' Max Vel=8.11 fps Inflow=6.62 cfs 0.477 afReach 27R: DMH23 Stub D=15.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=9.14 cfs Outflow=6.62 cfs 0.477 af Avg. Depth=0.19' Max Vel=24.26 fps Inflow=2.26 cfs 0.162 afReach RD12: Roof DrainD=10.0" n=0.010 L=10.0' S=0.4900 '/' Capacity=19.94 cfs Outflow=2.26 cfs 0.162 af Avg. Depth=0.25' Max Vel=4.01 fps Inflow=0.54 cfs 0.044 afReach Roof2: D=10.0" n=0.010 L=55.0' S=0.0100 '/' Capacity=2.85 cfs Outflow=0.54 cfs 0.044 af Avg. Depth=0.25' Max Vel=4.02 fps Inflow=0.54 cfs 0.044 afReach Roof3: D=10.0" n=0.010 L=80.0' S=0.0100 '/' Capacity=2.85 cfs Outflow=0.54 cfs 0.044 af Peak Elev=194.24' Inflow=1.56 cfs 0.121 afPond 2P: CB13 12.0" x 36.0' Culvert Outflow=1.56 cfs 0.121 af Peak Elev=193.98' Inflow=0.64 cfs 0.046 afPond 4P: CB14 12.0" x 21.0' Culvert Outflow=0.64 cfs 0.046 af Peak Elev=193.70' Inflow=6.88 cfs 0.539 afPond 5P: DMH13 18.0" x 120.0' Culvert Outflow=6.88 cfs 0.539 af Peak Elev=192.14' Inflow=6.88 cfs 0.539 afPond 10P: DMH14 18.0" x 120.0' Culvert Outflow=6.88 cfs 0.539 af Peak Elev=191.27' Inflow=10.22 cfs 0.779 afPond 11P: DMH15 18.0" x 103.0' Culvert Outflow=10.22 cfs 0.779 af Peak Elev=191.48' Inflow=1.78 cfs 0.128 afPond 13P: CB15 12.0" x 40.0' Culvert Outflow=1.78 cfs 0.128 af Type III 24-hr 25 Year Rainfall=5.15"ProP120307 Page 6Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=191.44' Inflow=1.57 cfs 0.112 afPond 14P: CB16 12.0" x 22.0' Culvert Outflow=1.57 cfs 0.112 af Peak Elev=189.53' Inflow=11.78 cfs 0.906 afPond 16P: DMH16 18.0" x 81.0' Culvert Outflow=11.78 cfs 0.906 af Peak Elev=175.62' Inflow=1.36 cfs 0.110 afPond 19A: 12.0" x 20.0' Culvert Outflow=1.36 cfs 0.110 af Peak Elev=175.37' Inflow=0.54 cfs 0.040 afPond 19B: 12.0" x 20.0' Culvert Outflow=0.54 cfs 0.040 af Peak Elev=186.21' Inflow=11.78 cfs 0.906 afPond 19P: DMH22 18.0" x 193.0' Culvert Outflow=11.78 cfs 0.906 af Peak Elev=180.37' Inflow=18.39 cfs 1.383 afPond 20P: DMH23 24.0" x 100.0' Culvert Outflow=18.39 cfs 1.383 af Peak Elev=179.10' Storage=0.357 af Inflow=21.77 cfs 1.625 afPond 21P: Basin6 Outflow=16.45 cfs 1.603 af Peak Elev=193.32' Storage=7,745 cf Inflow=6.37 cfs 0.470 afPond 26P: Deten02&03 Outflow=1.11 cfs 0.463 af Peak Elev=187.06' Storage=10,339 cf Inflow=7.43 cfs 0.939 afPond 29P: Infil04 Discarded=0.31 cfs 0.385 af Primary=2.47 cfs 0.462 af Outflow=2.79 cfs 0.846 af Peak Elev=186.61' Storage=6,243 cf Inflow=4.27 cfs 0.748 afPond 32P: Deten05 Outflow=2.31 cfs 0.723 af Peak Elev=140.84' Storage=1.240 af Inflow=33.10 cfs 2.542 afPond BAS05: Outflow=8.33 cfs 2.110 af Peak Elev=179.66' Inflow=0.92 cfs 0.068 afPond CB17: 12.0" x 54.2' Culvert Outflow=0.92 cfs 0.068 af Peak Elev=179.47' Inflow=1.29 cfs 0.097 afPond CB18: 15.0" x 40.0' Culvert Outflow=1.29 cfs 0.097 af Peak Elev=167.30' Inflow=1.02 cfs 0.073 afPond CB19: 12.0" x 14.0' Culvert Outflow=1.02 cfs 0.073 af Peak Elev=167.27' Inflow=0.74 cfs 0.055 afPond CB20: CB20 12.0" x 21.0' Culvert Outflow=0.74 cfs 0.055 af Peak Elev=186.17' Inflow=1.36 cfs 0.109 afPond CB33: 12.0" x 24.0' Culvert Outflow=1.36 cfs 0.109 af Peak Elev=184.29' Inflow=2.01 cfs 0.156 afPond CB34: 12.0" x 30.0' Culvert Outflow=2.01 cfs 0.156 af Type III 24-hr 25 Year Rainfall=5.15"ProP120307 Page 7Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=188.25' Inflow=1.27 cfs 0.098 afPond CB36: 12.0" x 50.0' Culvert Outflow=1.27 cfs 0.098 af Peak Elev=188.42' Inflow=1.15 cfs 0.090 afPond CB37: 12.0" x 105.0' Culvert Outflow=1.15 cfs 0.090 af Peak Elev=142.17' Inflow=1.74 cfs 0.127 afPond CB55: 12.0" x 50.0' Culvert Outflow=1.74 cfs 0.127 af Peak Elev=143.07' Inflow=2.54 cfs 0.212 afPond CB56: 12.0" x 15.0' Culvert Outflow=2.54 cfs 0.212 af Peak Elev=146.24' Inflow=3.24 cfs 0.232 afPond CB57: 12.0" x 65.0' Culvert Outflow=3.24 cfs 0.232 af Peak Elev=142.76' Inflow=1.53 cfs 0.109 afPond CB58: 12.0" x 15.0' Culvert Outflow=1.53 cfs 0.109 af Peak Elev=178.22' Inflow=2.21 cfs 0.165 afPond DMH17: 15.0" x 160.0' Culvert Outflow=2.21 cfs 0.165 af Peak Elev=174.56' Inflow=6.40 cfs 0.503 afPond DMH19: 18.0" x 156.0' Culvert Outflow=6.40 cfs 0.503 af Peak Elev=167.19' Inflow=12.60 cfs 0.983 afPond DMH20: DMH in Roadway 18.0" x 102.0' Culvert Outflow=12.60 cfs 0.983 af Peak Elev=167.24' Inflow=1.76 cfs 0.128 afPond DMH21: 18.0" x 45.0' Culvert Outflow=1.76 cfs 0.128 af Peak Elev=157.54' Inflow=12.60 cfs 0.983 afPond DMH24: 18.0" x 32.0' Culvert Outflow=12.60 cfs 0.983 af Peak Elev=149.50' Inflow=12.60 cfs 0.983 afPond DMH25: End Of Cross Country Drain-Line 24.0" x 143.0' Culvert Outflow=12.60 cfs 0.983 af Peak Elev=187.90' Inflow=2.42 cfs 0.189 afPond DMH30: 12.0" x 98.0' Culvert Outflow=2.42 cfs 0.189 af Peak Elev=185.76' Inflow=1.90 cfs 0.152 afPond DMH36: 12.0" x 120.0' Culvert Outflow=1.90 cfs 0.152 af Peak Elev=169.88' Inflow=4.45 cfs 0.352 afPond DMH37: 12.0" x 67.0' Culvert Outflow=4.45 cfs 0.352 af Peak Elev=142.63' Inflow=7.02 cfs 0.553 afPond DMH54: 18.0" x 65.0' Culvert Outflow=7.02 cfs 0.553 af Peak Elev=141.97' Inflow=13.72 cfs 1.054 afPond DMH55: 24.0" x 180.0' Culvert Outflow=13.72 cfs 1.054 af Type III 24-hr 25 Year Rainfall=5.15"ProP120307 Page 8Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=140.96' Inflow=15.98 cfs 1.216 afPond DMH56: Stormwater from Undeveloped Area On Lot 124.0" x 130.0' Culvert Outflow=15.98 cfs 1.216 af Peak Elev=136.55' Inflow=8.87 cfs 2.254 afPond DP-5: Existing CB Primary=8.20 cfs 2.244 af Secondary=0.67 cfs 0.010 af Outflow=8.87 cfs 2.254 af Peak Elev=141.98' Inflow=0.25 cfs 0.019 afPond TD01: Primary=0.25 cfs 0.019 af Secondary=0.00 cfs 0.000 af Outflow=0.25 cfs 0.019 af Inflow=24.68 cfs 2.921 afLink DP 4: Grove Street Primary=24.68 cfs 2.921 af Inflow=14.82 cfs 2.950 afLink Mill: River Primary=14.82 cfs 2.950 af