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Proposed 10year
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 10 Year Rainfall=4.40"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>1.74"Subcatchment 1S: A-CB13 Flow Length=310' Slope=0.0150 '/' Tc=8.2 min CN=72 Runoff=1.16 cfs 0.091 af Runoff Area=7,256 sf Runoff Depth>2.63"Subcatchment 3S: A-CB14 Flow Length=190' Slope=0.0150 '/' Tc=6.0 min CN=83 Runoff=0.51 cfs 0.037 af Runoff Area=15,421 sf Runoff Depth>3.82"Subcatchment 6S: A-DMH Stub Tc=6.0 min CN=95 Runoff=1.47 cfs 0.113 af Runoff Area=26,616 sf Runoff Depth>3.93"Subcatchment 9S: A-DMH Stub Tc=6.0 min CN=96 Runoff=2.57 cfs 0.200 af Runoff Area=18,567 sf Runoff Depth>2.91"Subcatchment 12S: A-CB15 Flow Length=260' Slope=0.0150 '/' Tc=6.0 min CN=86 Runoff=1.44 cfs 0.103 af Runoff Area=17,710 sf Runoff Depth>2.63"Subcatchment 15S: A-CB16 Flow Length=250' Slope=0.0150 '/' Tc=6.0 min CN=83 Runoff=1.26 cfs 0.089 af Runoff Area=13,500 sf Runoff Depth>4.16"Subcatchment 17S: A-RD Tc=6.0 min CN=98 Runoff=1.33 cfs 0.107 af Runoff Area=37,184 sf Runoff Depth>2.72"Subcatchment 22S: A-Basin Tc=6.0 min CN=84 Runoff=2.72 cfs 0.194 af Runoff Area=69,194 sf Runoff Depth>2.91"Subcatchment 23S: A-DMH Stub Tc=6.0 min CN=86 Runoff=5.38 cfs 0.385 af Runoff Area=26,072 sf Runoff Depth>3.40"Subcatchment 24S: A-Infil03 Tc=6.0 min CN=91 Runoff=2.30 cfs 0.170 af Runoff Area=35,274 sf Runoff Depth>3.20"Subcatchment 27S: A-Infil02 Tc=6.0 min CN=89 Runoff=2.97 cfs 0.216 af Runoff Area=67,090 sf Runoff Depth>3.00"Subcatchment 30S: A-Infil04 Tc=6.0 min CN=87 Runoff=5.36 cfs 0.385 af Runoff Area=36,362 sf Runoff Depth>3.40"Subcatchment 34S: A-Deten05 Tc=6.0 min CN=91 Runoff=3.21 cfs 0.236 af Runoff Area=177,487 sf Runoff Depth>1.27"Subcatchment 35S: A-Grove St Flow Length=530' Tc=6.0 min CN=65 Runoff=5.59 cfs 0.430 af Runoff Area=8,626 sf Runoff Depth>3.40"Subcatchment A-CB17: CB Collecting Half of Road Tc=6.0 min CN=91 Runoff=0.76 cfs 0.056 af Type III 24-hr 10 Year Rainfall=4.40"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>3.50"Subcatchment A-CB18: CB Collecting Half of Road Tc=6.0 min CN=92 Runoff=1.08 cfs 0.080 af Runoff Area=10,895 sf Runoff Depth>2.82"Subcatchment A-CB19: Half of Road Into CB 19 Flow Length=172' Tc=6.0 min CN=85 Runoff=0.82 cfs 0.059 af Runoff Area=16,350 sf Runoff Depth>2.81"Subcatchment A-CB19AB: Flow Length=308' Slope=0.0325 '/' Tc=9.5 min CN=85 Runoff=1.10 cfs 0.088 af Runoff Area=5,327 sf Runoff Depth>3.20"Subcatchment A-CB19B: Flow Length=100' Tc=6.0 min CN=89 Runoff=0.45 cfs 0.033 af Runoff Area=6,986 sf Runoff Depth>3.40"Subcatchment A-CB20: Half of Road Into CB 20 Flow Length=99' Slope=0.0325 '/' Tc=6.0 min CN=91 Runoff=0.62 cfs 0.045 af Runoff Area=11,848 sf Runoff Depth>4.05"Subcatchment A-CB33: Parking Area into Catch Basin Tc=6.0 min CN=97 Runoff=1.16 cfs 0.092 af Runoff Area=17,825 sf Runoff Depth>3.82"Subcatchment A-CB34: Tc=6.0 min CN=95 Runoff=1.70 cfs 0.130 af Runoff Area=11,255 sf Runoff Depth>3.82"Subcatchment A-CB36: Flow Length=150' Slope=0.0200 '/' Tc=6.0 min CN=95 Runoff=1.07 cfs 0.082 af Runoff Area=10,096 sf Runoff Depth>3.93"Subcatchment A-CB37: Flow Length=160' Slope=0.0200 '/' Tc=6.0 min CN=96 Runoff=0.98 cfs 0.076 af Runoff Area=17,381 sf Runoff Depth>3.10"Subcatchment A-CB55: Tc=6.0 min CN=88 Runoff=1.43 cfs 0.103 af Runoff Area=32,610 sf Runoff Depth>2.72"Subcatchment A-CB56: Flow Length=445' Tc=10.7 min CN=84 Runoff=2.04 cfs 0.170 af Runoff Area=35,648 sf Runoff Depth>2.72"Subcatchment A-CB57: Tc=6.0 min CN=84 Runoff=2.61 cfs 0.186 af Runoff Area=18,840 sf Runoff Depth>2.37"Subcatchment A-CB58: Flow Length=285' Tc=6.0 min CN=80 Runoff=1.21 cfs 0.086 af Runoff Area=44,900 sf Runoff Depth>3.40"Subcatchment A-PD12A: A-PD12ARoof Tc=6.0 min CN=91 Runoff=3.97 cfs 0.292 af Runoff Area=24,882 sf Runoff Depth>2.72"Subcatchment A-RD12: Tc=6.0 min CN=84 Runoff=1.82 cfs 0.130 af Runoff Area=4,641 sf Runoff Depth>4.16"Subcatchment A-RD2: Building 02Footprint Tc=6.0 min CN=98 Runoff=0.46 cfs 0.037 af Runoff Area=4,693 sf Runoff Depth>4.16"Subcatchment A-RD3: Building 03 Footprint Tc=6.0 min CN=98 Runoff=0.46 cfs 0.037 af Type III 24-hr 10 Year Rainfall=4.40"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>3.93"Subcatchment A-TD01: Trench Drain Tc=6.0 min CN=96 Runoff=0.21 cfs 0.016 af Runoff Area=2.687 ac Runoff Depth>2.46"Subcatchment EARLE: Flow Length=1,303' Tc=12.1 min CN=81 Runoff=6.36 cfs 0.550 af Runoff Area=59,414 sf Runoff Depth>2.37"Subcatchment PDA-5A: Flow Length=220' Slope=0.1000 '/' Tc=7.4 min CN=80 Runoff=3.62 cfs 0.270 af Runoff Area=0.508 ac Runoff Depth>2.72"Subcatchment PDA-5B: Flow Length=225' Tc=7.6 min CN=84 Runoff=1.53 cfs 0.115 af Avg. Depth=0.37' Max Vel=5.56 fps Inflow=1.47 cfs 0.113 afReach 24R: DMH13 StubD=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=1.47 cfs 0.113 af Avg. Depth=0.51' Max Vel=6.45 fps Inflow=2.57 cfs 0.200 afReach 25R: DMH13 StubD=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=2.57 cfs 0.200 af Avg. Depth=0.35' Max Vel=5.41 fps Inflow=1.33 cfs 0.107 afReach 26R: DMH16 Stub D=12.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=5.04 cfs Outflow=1.33 cfs 0.107 af Avg. Depth=0.69' Max Vel=7.75 fps Inflow=5.38 cfs 0.385 afReach 27R: DMH23 Stub D=15.0" n=0.013 L=20.0' S=0.0200 '/' Capacity=9.14 cfs Outflow=5.38 cfs 0.385 af Avg. Depth=0.17' Max Vel=22.77 fps Inflow=1.82 cfs 0.130 afReach RD12: Roof DrainD=10.0" n=0.010 L=10.0' S=0.4900 '/' Capacity=19.94 cfs Outflow=1.82 cfs 0.130 af Avg. Depth=0.23' Max Vel=3.83 fps Inflow=0.46 cfs 0.037 afReach Roof2: D=10.0" n=0.010 L=55.0' S=0.0100 '/' Capacity=2.85 cfs Outflow=0.46 cfs 0.037 af Avg. Depth=0.23' Max Vel=3.84 fps Inflow=0.46 cfs 0.037 afReach Roof3: D=10.0" n=0.010 L=80.0' S=0.0100 '/' Capacity=2.85 cfs Outflow=0.46 cfs 0.037 af Peak Elev=194.08' Inflow=1.16 cfs 0.091 afPond 2P: CB13 12.0" x 36.0' Culvert Outflow=1.16 cfs 0.091 af Peak Elev=193.88' Inflow=0.51 cfs 0.037 afPond 4P: CB14 12.0" x 21.0' Culvert Outflow=0.51 cfs 0.037 af Peak Elev=193.51' Inflow=5.64 cfs 0.441 afPond 5P: DMH13 18.0" x 120.0' Culvert Outflow=5.64 cfs 0.441 af Peak Elev=191.61' Inflow=5.64 cfs 0.441 afPond 10P: DMH14 18.0" x 120.0' Culvert Outflow=5.64 cfs 0.441 af Peak Elev=190.22' Inflow=8.34 cfs 0.633 afPond 11P: DMH15 18.0" x 103.0' Culvert Outflow=8.34 cfs 0.633 af Peak Elev=190.65' Inflow=1.44 cfs 0.103 afPond 13P: CB15 12.0" x 40.0' Culvert Outflow=1.44 cfs 0.103 af Type III 24-hr 10 Year Rainfall=4.40"ProP120307 Page 6Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=190.56' Inflow=1.26 cfs 0.089 afPond 14P: CB16 12.0" x 22.0' Culvert Outflow=1.26 cfs 0.089 af Peak Elev=188.90' Inflow=9.67 cfs 0.741 afPond 16P: DMH16 18.0" x 81.0' Culvert Outflow=9.67 cfs 0.741 af Peak Elev=175.54' Inflow=1.10 cfs 0.088 afPond 19A: 12.0" x 20.0' Culvert Outflow=1.10 cfs 0.088 af Peak Elev=175.33' Inflow=0.45 cfs 0.033 afPond 19B: 12.0" x 20.0' Culvert Outflow=0.45 cfs 0.033 af Peak Elev=185.58' Inflow=9.67 cfs 0.741 afPond 19P: DMH22 18.0" x 193.0' Culvert Outflow=9.67 cfs 0.741 af Peak Elev=179.59' Inflow=15.04 cfs 1.126 afPond 20P: DMH23 24.0" x 100.0' Culvert Outflow=15.04 cfs 1.126 af Peak Elev=178.88' Storage=0.325 af Inflow=17.76 cfs 1.319 afPond 21P: Basin6 Outflow=11.38 cfs 1.299 af Peak Elev=193.05' Storage=6,214 cf Inflow=5.28 cfs 0.385 afPond 26P: Deten02&03 Outflow=0.99 cfs 0.380 af Peak Elev=186.60' Storage=9,111 cf Inflow=6.14 cfs 0.765 afPond 29P: Infil04 Discarded=0.31 cfs 0.368 af Primary=1.29 cfs 0.320 af Outflow=1.60 cfs 0.689 af Peak Elev=185.85' Storage=4,528 cf Inflow=3.21 cfs 0.557 afPond 32P: Deten05 Outflow=1.62 cfs 0.532 af Peak Elev=140.23' Storage=1.044 af Inflow=27.09 cfs 2.068 afPond BAS05: Outflow=5.23 cfs 1.641 af Peak Elev=179.61' Inflow=0.76 cfs 0.056 afPond CB17: 12.0" x 54.2' Culvert Outflow=0.76 cfs 0.056 af Peak Elev=179.41' Inflow=1.08 cfs 0.080 afPond CB18: 15.0" x 40.0' Culvert Outflow=1.08 cfs 0.080 af Peak Elev=166.72' Inflow=0.82 cfs 0.059 afPond CB19: 12.0" x 14.0' Culvert Outflow=0.82 cfs 0.059 af Peak Elev=166.66' Inflow=0.62 cfs 0.045 afPond CB20: CB20 12.0" x 21.0' Culvert Outflow=0.62 cfs 0.045 af Peak Elev=186.10' Inflow=1.16 cfs 0.092 afPond CB33: 12.0" x 24.0' Culvert Outflow=1.16 cfs 0.092 af Peak Elev=184.21' Inflow=1.70 cfs 0.130 afPond CB34: 12.0" x 30.0' Culvert Outflow=1.70 cfs 0.130 af Type III 24-hr 10 Year Rainfall=4.40"ProP120307 Page 7Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=188.16' Inflow=1.07 cfs 0.082 afPond CB36: 12.0" x 50.0' Culvert Outflow=1.07 cfs 0.082 af Peak Elev=188.33' Inflow=0.98 cfs 0.076 afPond CB37: 12.0" x 105.0' Culvert Outflow=0.98 cfs 0.076 af Peak Elev=140.72' Inflow=1.43 cfs 0.103 afPond CB55: 12.0" x 50.0' Culvert Outflow=1.43 cfs 0.103 af Peak Elev=141.80' Inflow=2.04 cfs 0.170 afPond CB56: 12.0" x 15.0' Culvert Outflow=2.04 cfs 0.170 af Peak Elev=145.97' Inflow=2.61 cfs 0.186 afPond CB57: 12.0" x 65.0' Culvert Outflow=2.61 cfs 0.186 af Peak Elev=141.25' Inflow=1.21 cfs 0.086 afPond CB58: 12.0" x 15.0' Culvert Outflow=1.21 cfs 0.086 af Peak Elev=178.15' Inflow=1.85 cfs 0.136 afPond DMH17: 15.0" x 160.0' Culvert Outflow=1.85 cfs 0.136 af Peak Elev=174.40' Inflow=5.33 cfs 0.415 afPond DMH19: 18.0" x 156.0' Culvert Outflow=5.33 cfs 0.415 af Peak Elev=166.54' Inflow=10.54 cfs 0.816 afPond DMH20: DMH in Roadway 18.0" x 102.0' Culvert Outflow=10.54 cfs 0.816 af Peak Elev=166.60' Inflow=1.44 cfs 0.104 afPond DMH21: 18.0" x 45.0' Culvert Outflow=1.44 cfs 0.104 af Peak Elev=156.89' Inflow=10.54 cfs 0.816 afPond DMH24: 18.0" x 32.0' Culvert Outflow=10.54 cfs 0.816 af Peak Elev=149.30' Inflow=10.54 cfs 0.816 afPond DMH25: End Of Cross Country Drain-Line 24.0" x 143.0' Culvert Outflow=10.54 cfs 0.816 af Peak Elev=187.80' Inflow=2.05 cfs 0.158 afPond DMH30: 12.0" x 98.0' Culvert Outflow=2.05 cfs 0.158 af Peak Elev=185.69' Inflow=1.62 cfs 0.129 afPond DMH36: 12.0" x 120.0' Culvert Outflow=1.62 cfs 0.129 af Peak Elev=169.50' Inflow=3.78 cfs 0.296 afPond DMH37: 12.0" x 67.0' Culvert Outflow=3.78 cfs 0.296 af Peak Elev=141.17' Inflow=5.62 cfs 0.441 afPond DMH54: 18.0" x 65.0' Culvert Outflow=5.62 cfs 0.441 af Peak Elev=140.59' Inflow=11.17 cfs 0.852 afPond DMH55: 24.0" x 180.0' Culvert Outflow=11.17 cfs 0.852 af Type III 24-hr 10 Year Rainfall=4.40"ProP120307 Page 8Prepared by Tighe&Bond 12/3/2007HydroCAD® 8.00 s/n 003772 © 2006 HydroCAD Software Solutions LLC Peak Elev=140.27' Inflow=12.99 cfs 0.982 afPond DMH56: Stormwater from Undeveloped Area On Lot 124.0" x 130.0' Culvert Outflow=12.99 cfs 0.982 af Peak Elev=135.54' Inflow=5.65 cfs 1.757 afPond DP-5: Existing CB Primary=5.65 cfs 1.757 af Secondary=0.00 cfs 0.000 af Outflow=5.65 cfs 1.757 af Peak Elev=140.60' Inflow=0.21 cfs 0.016 afPond TD01: Primary=0.21 cfs 0.016 af Secondary=0.00 cfs 0.000 af Outflow=0.21 cfs 0.016 af Inflow=16.74 cfs 2.261 afLink DP 4: Grove Street Primary=16.74 cfs 2.261 af Inflow=11.39 cfs 2.307 afLink Mill: River Primary=11.39 cfs 2.307 af