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Proposed 100year
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 100 Year Rainfall=6.40"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>3.32"Subcatchment 1S: A-CB13 Flow Length=310' Slope=0.0150 '/' Tc=8.2 min CN=72 Runoff=2.26 cfs 0.173 af Runoff Area=7,256 sf Runoff Depth>4.46"Subcatchment 3S: A-CB14 Flow Length=190' Slope=0.0150 '/' Tc=6.0 min CN=83 Runoff=0.86 cfs 0.062 af Runoff Area=15,421 sf Runoff Depth>5.80"Subcatchment 6S: A-DMH Stub Tc=6.0 min CN=95 Runoff=2.18 cfs 0.171 af Runoff Area=26,616 sf Runoff Depth>5.92"Subcatchment 9S: A-DMH Stub Tc=6.0 min CN=96 Runoff=3.79 cfs 0.301 af Runoff Area=18,567 sf Runoff Depth>4.79"Subcatchment 12S: A-CB15 Flow Length=260' Slope=0.0150 '/' Tc=6.0 min CN=86 Runoff=2.33 cfs 0.170 af Runoff Area=17,710 sf Runoff Depth>4.46"Subcatchment 15S: A-CB16 Flow Length=250' Slope=0.0150 '/' Tc=6.0 min CN=83 Runoff=2.10 cfs 0.151 af Runoff Area=13,500 sf Runoff Depth>6.16"Subcatchment 17S: A-RD Tc=6.0 min CN=98 Runoff=1.94 cfs 0.159 af Runoff Area=37,184 sf Runoff Depth>4.57"Subcatchment 22S: A-Basin Tc=6.0 min CN=84 Runoff=4.49 cfs 0.325 af Runoff Area=69,194 sf Runoff Depth>4.79"Subcatchment 23S: A-DMH Stub Tc=6.0 min CN=86 Runoff=8.68 cfs 0.634 af Runoff Area=26,072 sf Runoff Depth>5.34"Subcatchment 24S: A-Infil03 Tc=6.0 min CN=91 Runoff=3.53 cfs 0.267 af Runoff Area=35,274 sf Runoff Depth>5.12"Subcatchment 27S: A-Infil02 Tc=6.0 min CN=89 Runoff=4.65 cfs 0.345 af Runoff Area=67,090 sf Runoff Depth>4.90"Subcatchment 30S: A-Infil04 Tc=6.0 min CN=87 Runoff=8.56 cfs 0.628 af Runoff Area=36,362 sf Runoff Depth>5.34"Subcatchment 34S: A-Deten05 Tc=6.0 min CN=91 Runoff=4.93 cfs 0.372 af Runoff Area=177,487 sf Runoff Depth>2.64"Subcatchment 35S: A-Grove St Flow Length=530' Tc=6.0 min CN=65 Runoff=12.44 cfs 0.897 af Runoff Area=8,626 sf Runoff Depth>5.34"Subcatchment A-CB17: CB Collecting Half of Road Tc=6.0 min CN=91 Runoff=1.17 cfs 0.088 af Type III 24-hr 100 Year Rainfall=6.40"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>5.46"Subcatchment A-CB18: CB Collecting Half of Road Tc=6.0 min CN=92 Runoff=1.65 cfs 0.125 af Runoff Area=10,895 sf Runoff Depth>4.68"Subcatchment A-CB19: Half of Road Into CB 19 Flow Length=172' Tc=6.0 min CN=85 Runoff=1.34 cfs 0.097 af Runoff Area=16,350 sf Runoff Depth>4.67"Subcatchment A-CB19AB: Flow Length=308' Slope=0.0325 '/' Tc=9.5 min CN=85 Runoff=1.79 cfs 0.146 af Runoff Area=5,327 sf Runoff Depth>5.12"Subcatchment A-CB19B: Flow Length=100' Tc=6.0 min CN=89 Runoff=0.70 cfs 0.052 af Runoff Area=6,986 sf Runoff Depth>5.34"Subcatchment A-CB20: Half of Road Into CB 20 Flow Length=99' Slope=0.0325 '/' Tc=6.0 min CN=91 Runoff=0.95 cfs 0.071 af Runoff Area=11,848 sf Runoff Depth>6.04"Subcatchment A-CB33: Parking Area into Catch Basin Tc=6.0 min CN=97 Runoff=1.70 cfs 0.137 af Runoff Area=17,825 sf Runoff Depth>5.80"Subcatchment A-CB34: Tc=6.0 min CN=95 Runoff=2.52 cfs 0.198 af Runoff Area=11,255 sf Runoff Depth>5.80"Subcatchment A-CB36: Flow Length=150' Slope=0.0200 '/' Tc=6.0 min CN=95 Runoff=1.59 cfs 0.125 af Runoff Area=10,096 sf Runoff Depth>5.92"Subcatchment A-CB37: Flow Length=160' Slope=0.0200 '/' Tc=6.0 min CN=96 Runoff=1.44 cfs 0.114 af Runoff Area=17,381 sf Runoff Depth>5.01"Subcatchment A-CB55: Tc=6.0 min CN=88 Runoff=2.26 cfs 0.166 af Runoff Area=32,610 sf Runoff Depth>4.56"Subcatchment A-CB56: Flow Length=445' Tc=10.7 min CN=84 Runoff=3.38 cfs 0.285 af Runoff Area=35,648 sf Runoff Depth>4.57"Subcatchment A-CB57: Tc=6.0 min CN=84 Runoff=4.31 cfs 0.311 af Runoff Area=18,840 sf Runoff Depth>4.14"Subcatchment A-CB58: Flow Length=285' Tc=6.0 min CN=80 Runoff=2.09 cfs 0.149 af Runoff Area=44,900 sf Runoff Depth>5.34"Subcatchment A-PD12A: A-PD12ARoof Tc=6.0 min CN=91 Runoff=6.09 cfs 0.459 af Runoff Area=24,882 sf Runoff Depth>4.57"Subcatchment A-RD12: Tc=6.0 min CN=84 Runoff=3.01 cfs 0.217 af Runoff Area=4,641 sf Runoff Depth>6.16"Subcatchment A-RD2: Building 02Footprint Tc=6.0 min CN=98 Runoff=0.67 cfs 0.055 af Runoff Area=4,693 sf Runoff Depth>6.16"Subcatchment A-RD3: Building 03 Footprint Tc=6.0 min CN=98 Runoff=0.68 cfs 0.055 af Type III 24-hr 100 Year Rainfall=6.40"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>5.92"Subcatchment A-TD01: Trench Drain Tc=6.0 min CN=96 Runoff=0.31 cfs 0.025 af Runoff Area=2.687 ac Runoff Depth>4.24"Subcatchment EARLE: Flow Length=1,303' Tc=12.1 min CN=81 Runoff=10.90 cfs 0.950 af Runoff Area=59,414 sf Runoff Depth>4.14"Subcatchment PDA-5A: Flow Length=220' Slope=0.1000 '/' Tc=7.4 min CN=80 Runoff=6.28 cfs 0.470 af Runoff Area=0.508 ac Runoff Depth>4.57"Subcatchment PDA-5B: Flow Length=225' Tc=7.6 min CN=84 Runoff=2.53 cfs 0.193 af Avg. Depth=0.46' Max Vel=6.18 fps Inflow=2.18 cfs 0.171 afReach 24R: DMH13 StubD=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=2.18 cfs 0.171 af Avg. Depth=0.65' Max Vel=7.04 fps Inflow=3.79 cfs 0.301 afReach 25R: DMH13 StubD=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=3.79 cfs 0.301 af Avg. Depth=0.43' Max Vel=6.00 fps Inflow=1.94 cfs 0.159 afReach 26R: DMH16 Stub D=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=1.94 cfs 0.159 af Avg. Depth=0.97' Max Vel=8.47 fps Inflow=8.68 cfs 0.634 afReach 27R: DMH23 Stub D=15.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=9.14 cfs Outflow=8.68 cfs 0.634 af Avg. Depth=0.22' Max Vel=26.32 fps Inflow=3.01 cfs 0.217 afReach RD12: Roof DrainD=10.0" n=0.010 L=10.0' S=0.4900 '/' Capacity=19.94 cfs Outflow=3.01 cfs 0.217 af Avg. Depth=0.27' Max Vel=4.26 fps Inflow=0.67 cfs 0.055 afReach Roof2: D=10.0" n=0.010 L=55.0' S=0.0100 '/' Capacity=2.85 cfs Outflow=0.67 cfs 0.055 af Avg. Depth=0.28' Max Vel=4.28 fps Inflow=0.68 cfs 0.055 afReach Roof3: D=10.0" n=0.010 L=80.0' S=0.0100 '/' Capacity=2.85 cfs Outflow=0.68 cfs 0.055 af Peak Elev=197.26' Inflow=2.26 cfs 0.173 afPond 2P: CB13 12.0" x 36.0' Culvert Outflow=2.26 cfs 0.173 af Peak Elev=196.77' Inflow=0.86 cfs 0.062 afPond 4P: CB14 12.0" x 21.0' Culvert Outflow=0.86 cfs 0.062 af Peak Elev=196.72' Inflow=8.97 cfs 0.708 afPond 5P: DMH13 18.0" x 120.0' Culvert Outflow=8.97 cfs 0.708 af Peak Elev=195.38' Inflow=8.97 cfs 0.708 afPond 10P: DMH14 18.0" x 120.0' Culvert Outflow=8.97 cfs 0.708 af Peak Elev=193.96' Inflow=13.39 cfs 1.029 afPond 11P: DMH15 18.0" x 103.0' Culvert Outflow=13.39 cfs 1.029 af Peak Elev=194.31' Inflow=2.33 cfs 0.170 afPond 13P: CB15 12.0" x 40.0' Culvert Outflow=2.33 cfs 0.170 af Type III 24-hr 100 Year Rainfall=6.40"ProP120307 Page 6Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=194.24' Inflow=2.10 cfs 0.151 afPond 14P: CB16 12.0" x 22.0' Culvert Outflow=2.10 cfs 0.151 af Peak Elev=191.00' Inflow=15.33 cfs 1.188 afPond 16P: DMH16 18.0" x 81.0' Culvert Outflow=15.33 cfs 1.188 af Peak Elev=175.73' Inflow=1.79 cfs 0.146 afPond 19A: 12.0" x 20.0' Culvert Outflow=1.79 cfs 0.146 af Peak Elev=175.42' Inflow=0.70 cfs 0.052 afPond 19B: 12.0" x 20.0' Culvert Outflow=0.70 cfs 0.052 af Peak Elev=187.55' Inflow=15.33 cfs 1.188 afPond 19P: DMH22 18.0" x 193.0' Culvert Outflow=15.33 cfs 1.188 af Peak Elev=181.75' Inflow=24.01 cfs 1.821 afPond 20P: DMH23 24.0" x 100.0' Culvert Outflow=24.01 cfs 1.821 af Peak Elev=179.38' Storage=0.399 af Inflow=28.50 cfs 2.146 afPond 21P: Basin6 Outflow=23.75 cfs 2.121 af Peak Elev=193.86' Storage=10,365 cf Inflow=8.18 cfs 0.612 afPond 26P: Deten02&03 Outflow=1.31 cfs 0.604 af Peak Elev=187.50' Storage=11,251 cf Inflow=9.56 cfs 1.233 afPond 29P: Infil04 Discarded=0.32 cfs 0.408 af Primary=6.13 cfs 0.712 af Outflow=6.45 cfs 1.120 af Peak Elev=187.40' Storage=7,799 cf Inflow=9.63 cfs 1.084 afPond 32P: Deten05 Outflow=6.06 cfs 1.058 af Peak Elev=141.71' Storage=1.536 af Inflow=43.17 cfs 3.348 afPond BAS05: Outflow=11.19 cfs 2.906 af Peak Elev=179.73' Inflow=1.17 cfs 0.088 afPond CB17: 12.0" x 54.2' Culvert Outflow=1.17 cfs 0.088 af Peak Elev=179.54' Inflow=1.65 cfs 0.125 afPond CB18: 15.0" x 40.0' Culvert Outflow=1.65 cfs 0.125 af Peak Elev=168.73' Inflow=1.34 cfs 0.097 afPond CB19: 12.0" x 14.0' Culvert Outflow=1.34 cfs 0.097 af Peak Elev=168.67' Inflow=0.95 cfs 0.071 afPond CB20: CB20 12.0" x 21.0' Culvert Outflow=0.95 cfs 0.071 af Peak Elev=186.29' Inflow=1.70 cfs 0.137 afPond CB33: 12.0" x 24.0' Culvert Outflow=1.70 cfs 0.137 af Peak Elev=184.44' Inflow=2.52 cfs 0.198 afPond CB34: 12.0" x 30.0' Culvert Outflow=2.52 cfs 0.198 af Type III 24-hr 100 Year Rainfall=6.40"ProP120307 Page 7Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=188.44' Inflow=1.59 cfs 0.125 afPond CB36: 12.0" x 50.0' Culvert Outflow=1.59 cfs 0.125 af Peak Elev=188.58' Inflow=1.44 cfs 0.114 afPond CB37: 12.0" x 105.0' Culvert Outflow=1.44 cfs 0.114 af Peak Elev=144.81' Inflow=2.26 cfs 0.166 afPond CB55: 12.0" x 50.0' Culvert Outflow=2.26 cfs 0.166 af Peak Elev=146.42' Inflow=3.38 cfs 0.285 afPond CB56: 12.0" x 15.0' Culvert Outflow=3.38 cfs 0.285 af Peak Elev=147.08' Inflow=4.31 cfs 0.311 afPond CB57: 12.0" x 65.0' Culvert Outflow=4.31 cfs 0.311 af Peak Elev=145.91' Inflow=2.09 cfs 0.149 afPond CB58: 12.0" x 15.0' Culvert Outflow=2.09 cfs 0.149 af Peak Elev=178.33' Inflow=2.82 cfs 0.213 afPond DMH17: 15.0" x 160.0' Culvert Outflow=2.82 cfs 0.213 af Peak Elev=174.92' Inflow=8.18 cfs 0.651 afPond DMH19: 18.0" x 156.0' Culvert Outflow=8.18 cfs 0.651 af Peak Elev=168.55' Inflow=16.02 cfs 1.265 afPond DMH20: DMH in Roadway 18.0" x 102.0' Culvert Outflow=16.02 cfs 1.265 af Peak Elev=168.62' Inflow=2.29 cfs 0.169 afPond DMH21: 18.0" x 45.0' Culvert Outflow=2.29 cfs 0.169 af Peak Elev=158.90' Inflow=16.02 cfs 1.265 afPond DMH24: 18.0" x 32.0' Culvert Outflow=16.02 cfs 1.265 af Peak Elev=149.92' Inflow=16.02 cfs 1.265 afPond DMH25: End Of Cross Country Drain-Line 24.0" x 143.0' Culvert Outflow=16.02 cfs 1.265 af Peak Elev=188.14' Inflow=3.03 cfs 0.239 afPond DMH30: 12.0" x 98.0' Culvert Outflow=3.03 cfs 0.239 af Peak Elev=185.89' Inflow=2.37 cfs 0.192 afPond DMH36: 12.0" x 120.0' Culvert Outflow=2.37 cfs 0.192 af Peak Elev=171.31' Inflow=5.56 cfs 0.445 afPond DMH37: 12.0" x 67.0' Culvert Outflow=5.56 cfs 0.445 af Peak Elev=145.65' Inflow=9.38 cfs 0.745 afPond DMH54: 18.0" x 65.0' Culvert Outflow=9.38 cfs 0.745 af Peak Elev=144.46' Inflow=17.96 cfs 1.396 afPond DMH55: 24.0" x 180.0' Culvert Outflow=17.96 cfs 1.396 af Type III 24-hr 100 Year Rainfall=6.40"ProP120307 Page 8Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=142.66' Inflow=20.96 cfs 1.613 afPond DMH56: Stormwater from Undeveloped Area On Lot 124.0" x 130.0' Culvert Outflow=20.96 cfs 1.613 af Peak Elev=136.66' Inflow=12.30 cfs 3.099 afPond DP-5: Existing CB Primary=8.44 cfs 2.847 af Secondary=3.86 cfs 0.252 af Outflow=12.30 cfs 3.099 af Peak Elev=144.46' Inflow=0.31 cfs 0.025 afPond TD01: Primary=0.26 cfs 0.019 af Secondary=0.31 cfs 0.006 af Outflow=0.31 cfs 0.025 af Inflow=37.02 cfs 4.076 afLink DP 4: Grove Street Primary=37.02 cfs 4.076 af Inflow=23.20 cfs 4.049 afLink Mill: River Primary=23.20 cfs 4.049 af