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HomeMy WebLinkAboutSD-18-28 - Supplemental - 1580 Dorset Street (55)LS2 {� Pt7hlD A PD D A pNp �rmwater Pond A GC] Lindamac Street 2 Grass Channel 4 �Subca-Reach '- SS4, GC1 — ;. SOS, Senator Street 1 AGC3 CB 61A�, Grass Chann 6$ RR4 C 8 RR3) Russett Road 3 Senator Street 4 Grass Channel 1 C 1 Lindamac Street [GC2] Senator Street 5 Grass Channel 2 CB 80 r� Russett Road 5 (SS3 r�Pon�� Link Senator Street 3 � RR6 el 3 Russett Road 6 Russett Road 4 POND A REV 2-15-18 PRE Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HydroCAD®10.00-12 s/n 05093 ©2014 HydroCAD Software Solutions LLC Subcatchment PRE A: PRE DEVELOPMENT Hydrograph s iaaa } 8 Type II 24-hr 7 , 1-YR Rainfall=2.10" Runoff Area=1,024,263 sf S Runoff Volume=1.223 of Runoff Depth=0.62" 0 4_ Flow Length=1,700' iff Tc=49.5 min CN=80 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Time (hours) L7 Runoff POND A REV 2-15-18 PRE Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HydroCAD®10.00-12 s/n 05093 ©2014 HydroCAD Software Solutions LLC Summary for Subcatchment PRE A: PRE DEVELOPMENT Runoff = 8.08 cfs @ 12.53 hrs, Volume= 1.223 af, Depth= 0.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.10" Area (sf) CN Description 1,024,263 80 Pasture/grassland/range, Good, HSG D 1,024,263 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 100 0.0167 0.28 Sheet Flow, Sheet Flow Cultivated: Residue<=20% n= 0.060 P2= 2.30" 43.5 1,600 0.0150 0.61 Shallow Concentrated Flow, Shallow Concentrated Flow Woodland Kv= 5.0 fps 49.5 1,700 Total POND A REV 2-15-18 PRE Type/1 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD®10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC Subcatchment PRE A: PRE DEVELOPMENT Hydrograph 22• 21 i 8.7 20- 19. Type II 24-hr 18 10-YR Rainfall=3.20" 16 Runoff Area=1,024,263 sf 15 14 Runoff Volume=2.747 of 1 2 Runoff Depth=1.40" 11 LL1❑ Flow Length=1,700' 8 Tc=49.5 m i n ' 8 c[s CN=80 6 a 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Time (hours) � RunoH POND A REV 2-15-18 PRE Type 11 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD®10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC Summary for Subcatchment PRE A: PRE DEVELOPMENT Runoff = 19.76 cfs @ 12.50 hrs, Volume= 2.747 af, Depth= 1.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.20" Area (sf) CN Description 1,024,263 80 Pasture/grassland/range, Good, HSG D 1,024,263 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet)_ (ft/ft) (ft/sec) (cfs) 6.0 100 0.0167 0.28 Sheet Flow, Sheet Flow Cultivated: Residue<=20% n= 0.060 P2= 2.30" 43.5 1,600 0.0150 0.61 Shallow Concentrated Flow, Shallow Concentrated Flow Woodland Kv= 5.0 fps 49.5 1,700 Total POND A REV 2-28-18 Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HVdroCAD® 10.00-12 s/n 05093 © 2014 HydroCAD Software Solutions LLC Pond POND: Stormwater Pond A Hydrograph 11 Inflow ® Primary 0 10 20 30 40 50 60 70 60 90 100 110 120 130 140 Time (hours) POND A REV 2-28-18 Type 1124-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HydroCADO 10.00-12 s/n 05093 © 2014 HydroCAD Software Solutions LLC Summary for Pond POND: Stormwater Pond A Inflow Area = 23.376 ac, 37.59% Impervious, Inflow Depth = 1.09" for 1-YR event Inflow = 24.90 cfs @ 11.99 hrs, Volume= 2.123 of Outflow = 1.32 cfs @ 14.86 hrs, Volume= 2.117 af, Atten= 95%, Lag= 172.2 min Primary = 1.32 cfs @ 14.86 hrs, Volume= 2.117 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-144.00 hrs, dt= 0.03 hrs / 9 Starting Elev= 394.11' Surf.Area= 14,508 sf Storage= 14,698 cf Peak Elev= 397.11' @ 14.86 hrs, Surf.Area= 22,201 sf Storage= 69,123 cf (54,424 cf above start) Plug -Flow detention time= 941.0 min calculated for 1.779 of (84% of inflow) Center -of -Mass det. time= 716.2 min ( 1,542.2 - 826.0 ) Volume Invert Avail.Storage Storage Description #1 393.00' 118,659 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) cubic -feet) (cubic -feet) 393.00 11,985 0 0 394.00 14,248 13,117 13,117 395.00 16,616 15,432 28,549 396.00 19,085 17,851 46,399 397.00 21,743 20,414 66,813 398.00 26,102 23,923 90,736 399.00 29,745 27,924 118,659 Device Routinq Invert Outlet Devices #1 Primary 394.11' 3.5" Vert. Orifice/Grate C= 0.600 #2 Primary 395.50' 5.0" Vert. Orifice/Grate C= 0.600 #3 Primary 397.50' 2.0' long Sharp -Crested Rectangular Weir X 3.00 2 End Contraction(s) 1.0' Crest Height Primary OutFlow Max=1.32 cfs @ 14.86 hrs HW=397.11' (Free Discharge) L1=Orifice/Grate (Orifice Controls 0.54 cfs @ 8.13 fps) 2=Orifice/Grate (Orifice Controls 0.78 cfs @ 5.69 fps) 3=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) POND A REV 2-28-18 Type 11 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD®10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC Pond POND: Stormwater Pond A Hydrograph ❑ Inflow l-} Primary 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Time (hours) POND A REV 2-28-18 Type/1 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD®10.00-12 s/n 05093 ©2014 HvdroCAD Software Solutions LLC Summary for Pond POND: Stormwater Pond A Inflow Area = 23.376 ac, 37.59% Impervious, Inflow Depth = 1.91" for 10-YR event Inflow = 31.97 cfs @ 11.99 hrs, Volume= 3.717 of Outflow = 8.40 cfs @ 12.81 hrs, Volume= 3.71Oaf, Atten= 74%, Lag= 49.2 min Primary = 8.40 cfs @ 12.81 hrs, Volume= 3.710 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-144.00 hrs, dt= 0.03 hrs / 9 Starting Elev= 394.11' Surf.Area= 14,508 sf Storage= 14,698 cf Peak Elev= 397.99' @ 12.81 hrs Surf.Area= 26,060 sf Storage= 90,484 cf (75,785 cf above start) Plug -Flow detention time= 671.3 min calculated for 3.372 of (91% of inflow) Center -of -Mass det. time= 552.4 min ( 1,371.3 - 818.9 ) Volume Invert Avail.Storage Storage Description #1 393.00' 118,659 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) s -ft cubic -feet) cubic -feet 393.00 11,985 0 0 394.00 14,248 13,117 13,117 395.00 16,616 15,432 28,549 396.00 19,085 17,851 46,399 397.00 21,743 20,414 66,813 398.00 26,102 23,923 90,736 399.00 29,745 27,924 118,659 Device Routinq Invert Outlet Devices #1 Primary 394.11' 3.5" Vert. Orifice/Grate C= 0.600 #2 Primary 395.50' 5.0" Vert. Orifice/Grate C= 0.600 #3 Primary 397.50' 2.0' long Sharp -Crested Rectangular Weir X 3.00 2 End Contraction(s) 1.0' Crest Height Primary OutFlow Max=8.40 cfs @ 12.81 hrs. HW=397.99' (Free Discharge) 1=Orifice/Grate (Orifice Controls 0.62 cfs @ 9.30 fps) 2=Orifice/Grate (Orifice Controls 0.99 cfs @ 7.27 fps) 3=Sharp-Crested Rectangular Weir (Weir Controls 6.79 cfs @ 2.43 fps) AR4 Aurora Rd 4 G6 B �D RR1 Area and B CI ussett Road 1 PRE B �sP g�� 43 <�— 42 23 ' ''NC1 ' ;' ■ PRE DEVELOPMENT Stormwater Pond B C 3 CB 42 CB 23 Nadeaucrest Dr 1 �RR2/" CB 44 CB 102 Russett Road 2 A45 �— CLL i CB 45 Liberty Lane 1 Su4 Reach on Link POND B REV 2-28-18 Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD®10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC Subcatchment PRE B: PRE DEVELOPMENT Hydrograph C] Runoff Type II 24-hr 7 1-YR Rainfall=2.10" n Runoff Area=543,881 sf Runoff Volume=0.650 of Runoff Depth=0.62" a Flow Length=1,000' Tc=20.6 m i n CN=80 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100105110115120125130135140 Time (hours) POND B REV 2-28-18 Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HydroCAD®10.00-12 s/n 05093 ©2014 HydroCAD Software Solutions LLC Summary for Subcatchment PRE B: PRE DEVELOPMENT Runoff = 7.89 cfs @ 12.15 hrs, Volume= 0.650 af, Depth= 0.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.10" Area (sf) CN Des 543,881 80 Pasture/grassland/range, Good, HSG D 543,881 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min (feet) ft/ft) (ft/sec) (cfs) 5.6 100 0.0200 0.30 Sheet Flow, Sheet Flow Cultivated: Residue<=20% n= 0.060 P2= 2.30" 15.0 900 0.0400 1.00 Shallow Concentrated Flow, Shallow Concentrated Flow Woodland Kv= 5.0 fps 20.6 1,000 Total POND B REV 2-28-18 Type Il 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HydroCAD®10.00-12 s/n 05093 ©2014 HydroCAD Software Solutions LLC Subcatchment PRE B: PRE DEVELOPMENT Hydrograph 21 20" 18.83 da 19 Type 11 24-h r 17 10-YR Rainfall=3.20" 1G 15 Runoff Area=543,881 sf 14 13, Runoff Volume=1.459 of Runoff Depth=1.40" 'g, Flow Length=1,000' g Tc=20.6 m i n 7 6= CN=80 4 3 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120125 130 135 140 Time (hours) I ❑Runoff POND B REV 2-28-18 Type Il 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD®10.00-12 s/n 05093 ©2014 HvdroCAD Software Solutions LLC Summary for Subcatchment PRE B: PRE DEVELOPMENT Runoff = 18.83 cfs @ 12.14 hrs, Volume= 1.459 af, Depth= 1.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.20" Area (sf) CN Description 543.881 80 Pasture/ rassland/ran e, Good, HSG D 543,881 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft) (ft/sec) (cfs 5.6 100 0.0200 0.30 Sheet Flow, Sheet Flow Cultivated: Residue<=20% n= 0.060 P2= 2.30" 15.0 900 0.0400 1.00 Shallow Concentrated Flow, Shallow Concentrated Flow Woodland Kv= 5.0 fps 20.6 1,000 Total POND B REV 2-28-18 Type // 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD® 10.00-12 s/n 05093 © 2014 HydroCAD Software Solutions LLC Pond SP B: Stormwater Pond B Hydrograph Q Inflow Q Primary 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Time (hours) POND B REV 2-28-18 Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD® 10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC Summary for Pond SP B: Stormwater Pond B Inflow Area = 12.486 ac, 48.51% Impervious, Inflow Depth = 1.23" for 1-YR event Inflow = 23.88 cfs @ 11.97 hrs, Volume= 1.280 of Outflow = 1.52 cfs @ 12.77 hrs, Volume= 1.279 af, Atten= 94%, Lag= 48.3 min Primary = 1.52 cfs @ 12.77 hrs, Volume= 1.279 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Starting Elev= 394.37' Surf.Area= 6,060 sf Storage= 9,753 cf Peak Elev= 397.73' @ 12.77 hrs Surf.Area= 14,268 sf Storage= 41,429 cf (31,677 cf above start) Plug -Flow detention time= 956.7 min calculated for 1.055 of (82% of inflow) Center -of -Mass det. time= 714.3 min ( 1,503.3 - 789.0 ) Volume Invert Avail.Stora a Storage Description #1 392.00' 62,250 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) cubic -feet cubic -feet 392.00 2,471 0 0 393.00 3,695 3,083 3,083 394.00 5,403 4,549 7,632 395.00 7,180 6,292 13,924 396.00 9,091 8,136 22,059 397.00 11,136 10,114 32,173 398.00 15,434 13,285 45,458 399.00 18,150 16,792 62,250 Device Routing Invert Outlet Devices #1 Primary 394.37' 2.7" Vert. Orifice/Grate C= 0.600 #2 Primary 397.66' 2.3' long Sharp -Crested Rectangular Weir X 3.00 2 End Contraction(s) 1.0' Crest Height #3 Primary 397.00' 6.6" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.52 cfs @ 12.77 hrs HW=397.73' (Free Discharge) 9=OrificelGrate (Orifice Controls 0.34 cfs @ 8.68 fps) 2=Sharp-Crested Rectangular Weir (Weir Controls 0.41 cfs @ 0.86 fps) 3=OrificelGrate (Orifice Controls 0.77 cfs @ 3.24 fps) POND B REV 2-28-18 Type 11 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 H droCAD® 10.00-12 s/n 05093 © 2014 H droCAD Software Solutions LLC Pond SP B: Stormwater Pond B Hydrograph 44 19 14 fr. 42 7-40- 38. 36 34 - 32 + 0 Inflow Area=12.486 ac Peak E lev=398.46' Storage=52,913 cf f [:] Inflow �1 Primary POND B REV 2-28-18 Type // 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD®10.00-12 s/n 05093 ©2014 HvdroCAD Software Solutions LLC Summary for Pond SP B: Stormwater Pond B Inflow Area = 12.486 ac, 48.51% Impervious, Inflow Depth = 2.14" for 10-YR event Inflow = 39.74 cfs @ 11.96 hrs, Volume= 2.229 of Outflow = 18.24 cfs @ 12.08 hrs, Volume= 2.228 af, Atten= 54%, Lag= 7.2 min Primary = 18.24 cfs @ 12.08 hrs, Volume= 2.228 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Starting Elev= 394.37' Surf.Area= 6,060 sf Storage= 9,753 cf Peak Elev= 398.46' @ 12.08 hrs Surf.Area= 16,694 sf Storage= 52,913 cf (43,160 cf above start) Plug -Flow detention time= 577.4 min calculated for 2.003 of (90% of inflow) Center -of -Mass det. time= 460.1 min ( 1,242.2 - 782.1 ) Volume Invert Avail.Stora a Storage Description #1 392.00' 62,250 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic -feet) cubic -feet 392.00 2,471 0 0 393.00 3,695 3,083 3,083 394.00 5,403 4,549 7,632 395.00 7,180 6,292 13,924 396.00 9,091 8,136 22,059 397.00 11,136 10,114 32,173 398.00 15,434 13,285 45,458 399.00 18,150 16,792 62,250 Device Routing Invert Outlet Devices #1 Primary 394.37' 2.7" Vert. Orifice/Grate C= 0.600 #2 Primary 397.66' 2.3' long Sharp -Crested Rectangular Weir X 3.00 2 End Contraction(s) 1.0' Crest Height #3 Primary 397.00' 6.6" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=17.94 cfs @ 12.08 hrs HW=398.45' (Free Discharge) 1=Orifice/Grate (Orifice Controls 0.38 cfs @ 9.60 fps) 2=Sharp-Crested Rectangular Weir (Weir Controls 16.32 cfs @ 3.20 fps) 3=Orifice/Grate (Orifice Controls 1.24 cfs @ 5.23 fps) PRE F PRE ' GS2 / AR3 rassed Swale Aurora Rd 3 CB SP v 4 v OAR Stormwater Pi 5u4 Reach on Link IN Aurora Rd 1 GS1 AR2 Grassed Swale Aurora Rd 2 POND C REV 2-28-18 Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HydroCAD®10.00-12 s/n 05093 ©2014 HydroCAD Software Solutions LLC Subcatchment PRE C: PRE Hydrograph 4 r Type II 24-hr 1-YR Rainfal I=2.10" Runoff Area=215,123 sf 3 Runoff Volume=0.257 of Runoff Depth=0.62" U. 2 Flow Length=800' Tc=12.6 min CN=80 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 Time (hours) POND C REV 2-28-18 Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HydroCADO 10.00-12 s/n 05093 ©2014 HydroCAD Software Solutions LLC Summary for Subcatchment PRE C: PRE Runoff = 4.10 cfs @ 12.06 hrs, Volume= 0.257 af, Depth= 0.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.10" Area (sf) CN Description 215,123 80 Pasture/grassland/range, Good, HSG D 215,123 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) ft/sec) (cfs) 5.6 100 0.0200 0.30 Sheet Flow, Sheet Flow Cultivated: Residue<=20% n= 0.060 P2= 2.30" 7.0 700 0.0340 1.66 Shallow Concentrated Flow, Shallow Concentrated Flow Cultivated Straiqht Rows Kv= 9.0 fps 12.6 800 Total POND C REV 2-28-18 Type/1 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 H droCAD®10.00-12 s/n 05093 © 2014 H droCAD Software Solutions LLC Subcatchment PRE C: PRE Hydrograph 10- 8.61 ere Type II 24-hr 9- 10-YR Rainfall=3.20" 8 Runoff Area=215,123 sf Runoff Volume=0.577 of Runoff Depth=1.40" LL Flow Length=800' 4- Tc=12.6 min 3 CN=80 F] A/llJ/SJIff////!/!!JF///x.� 1 5 10 15 20 25 1 35 41 45 50 55 .1 65 70 75 :1 85•15 100 105 110 115 1 1 1 41 f, ] Runoff POND C REV 2-28-18 Type 11 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD® 10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC Summary for Subcatchment PRE C: PRE Runoff = 9.61 cfs @ 12.05 hrs, Volume= 0.577 af, Depth= 1.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.20" Area (sf) CN Description 215.123 80 Pasture/grassland/range, Good, HSG D 215,123 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) feet ft/ftft/sec) cfs 5.6 100 0.0200 0.30 Sheet Flow, Sheet Flow Cultivated: Residue<=20% n= 0.060 P2= 2.30" 7.0 700 0.0340 1.66 Shallow Concentrated Flow, Shallow Concentrated Flow Cultivated Straiqht Rows Kv= 9.0 fps 12.6 800 Total POND C REV 2-28-18 Type 11 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD® 10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC u 3 0 LL Pond SP C: Stormwater Pond C Hydrograph 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Time (hours) L Inflow t9 Primary POND C REV 2-28-18 Type // 24-hr 1-YR Rainfall=2.10" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCADO 10.00-12 s/n 05093 ©2014 HvdroCAD Software Solutions LLC Summary for Pond SP C: Stormwater Pond C Inflow Area = 4.939 ac, 45.91% Impervious, Inflow Depth = 1.20" for 1-YR event Inflow = 8.68 cfs @ 11.99 hrs, Volume= 0.493 of Outflow = 1.05 cfs @ 12.41 hrs, Volume= 0.492 af, Atten= 88%, Lag= 25.7 min Primary = 1.05 cfs @ 12.41 hrs, Volume= 0.492 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Starting Elev= 395.57' Surf.Area= 3,048 sf Storage= 3,636 cf Peak Elev= 398.01' @ 12.41 hrs Surf.Area= 7,449 sf Storage= 15,145 cf (11,509 cf above start) Plug -Flow detention time= 963.7 min calculated for 0.409 of (83% of inflow) Center -of -Mass det. time= 725.6 min ( 1,521.8 - 796.3 ) Volume Invert Avail.Stora a Storage Description #1 394.00' 23,350 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (s -ft) (cubic -feet (cubic -feet 394.00 1,634 0 0 395.00 2,484 2,059 2,059 396.00 3,474 2,979 5,038 397.00 4,583 4,029 9,067 398.00 7,433 6,008 15,075 399.00 9,118 8,276 23,350 Device Routing Invert Outlet Devices #1 Primary 395.57' 1.2" Vert. Orifice/Grate C= 0.600 #2 Primary 397.90' 1.8' long Sharp -Crested Rectangular Weir X 3.00 2 End Contraction(s) 1.0' Crest Height #3 Primary 397.00' 3.8" Vert. Orifice/Grate C= 0.600 Primary OutiFlow Max=1.05 cfs @ 12.41 hrs HW=398.01' (Free Discharge) 1 =0rificelGrate (Orifice Controls 0.06 cfs @ 7.44 fps) 2=Sharp-Crested Rectangular Weir (Weir Controls 0.64 cfs @ 1.09 fps) 3=OrificelGrate (Orifice Controls 0.35 cfs @ 4.44 fps) POND C REV 2-28-18 Type // 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD® 10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC u 3 0 LL Pond SP C: Stormwater Pond C Hydrograph 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Time (hours) F Inflow 10 Primary POND C REV 2-28-18 Type Il 24-hr 10-YR Rainfall=3.20" Prepared by {enter your company name here} Printed 6/11/2018 HvdroCAD® 10.00-12 s/n 05093 © 2014 HvdroCAD Software Solutions LLC Summary for Pond SP C: Stormwater Pond C Inflow Area = 4.939 ac, 45.91% Impervious, Inflow Depth = 2.12" for 10-YR event Inflow = 15.71 cfs @ 11.98 hrs, Volume= 0.873 of Outflow = 9.20 cfs @ 12.08 hrs, Volume= 0.872 af, Atten= 41%, Lag= 5.6 min Primary = 9.20 cfs @ 12.08 hrs, Volume= 0.872 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-144.00 hrs, dt= 0.05 hrs Starting Elev= 395.57' Surf.Area= 3,048 sf Storage= 3,636 cf Peak Elev= 398.52' @ 12.08 hrs Surf.Area= 8,314 sf Storage= 19,192 cf (15,556 cf above start) Plug -Flow detention time= 573.6 min calculated for 0.789 of (90% of inflow) Center -of -Mass det. time= 461.8 min ( 1,249.7 - 787.9 ) Volume Invert Avail.Stora a Storage Description #1 394.00' 23,350 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 394.00 1,634 0 0 395.00 2,484 2,059 2,059 396.00 3,474 2,979 5,038 397.00 4,583 4,029 9,067 398.00 7,433 6,008 15,075 399.00 9,118 8,276 23,350 Device Routing Invert Outlet Devices #1 Primary 395.57' 1.2" Vert. Orifice/Grate C= 0.600 #2 Primary 397.90' 1.8' long Sharp -Crested Rectangular Weir X 3.00 2 End Contraction(s) 1.0' Crest Height #3 Primary 397.00' 3.8" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=9.03 cfs @ 12.08 hrs HW=398.51' (Free Discharge) 1=Orifice/Grate (Orifice Controls 0.06 cfs @ 8.19 fps) 2=S ha rp-C rested Rectangular Weir (Weir Controls 8.53 cfs @ 2.76 fps) 3=Orifice/Grate (Orifice Controls 0.44 cfs @ 5.61 fps)