NJ DEP 2-hr NJDEP Rainfall=1.25" Printed 04/12/2025 LLC Page 8
102 Sams -REV 12-02-25 NJ Prepared by Haler Consulting HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC
Summary for Pond 174P: WQ Infiltration Basin #1
Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 0.30" for NJDEP event
Inflow = 2.10 cfs @ 1.09 hrs, Volume= 2,727 cf
Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 100%, Lag= 0.0 min
Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 95.61' @ 2.34 hrs Surf.Area= 4,754 sf Storage= 2,726 cf
Plug-Flow detention time= (not calculated: initial storage exceeds outflow)
Center-of-Mass det. time= (not calculated: no outflow)
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin X 0.00 L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir X 0.00 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs)
Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)