Analysis - Proposed Conditions NJ DEP 2-hr NJDEP WQ Rainfall=1.25"
Prepared by Civil Core Consulting Printed 12/19/2025
HydroCAD® 10.20-8a s/n 13637 © 2025 HydroCAD Software Solutions LLC Page 45
| Inflow Area = | 18,731 sf, | 0.00% Impervious, Inflow Depth = 0.00" for NJDEP WQ event |
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| Inflow = | 0.00 cfs @ | 0.00 hrs, Volume= 0 cf |
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| Outflow = | 0.00 cfs @ | 0.00 hrs, Volume= 0 cf, Atten= 0%, Lag= 0.0 min |
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| Primary = | 0.00 cfs @ | 0.00 hrs, Volume= 0 cf |
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Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 94.30' @ 0.00 hrs Surf.Area= 63 sf Storage= 0 cf
Plug-Flow detention time = (not calculated: initial storage exceeds outflow)
Center-of-Mass det. time = (not calculated: no inflow)
| Volume | Invert | Avail.Storage | Storage Description |
|---|
| #1 | 94.30' | 307 cf | Custom Stage Data (Prismatic) | Listed below (Recalc) |
| Elevation
(feet) | Surf.Area
(sq-ft) | Inc.Store
(cubic-feet) | Cum.Store
(cubic-feet) |
| 94.30 | 63 | 0 | 0 |
| 95.00 | 148 | 74 | 74 |
| 96.00 | 319 | 234 | 307 |
| Device | Routing | Invert | Outlet Devices |
| #1 | Device 3 | 94.80' | 5.0" Vert. Orifice C = 0.600 | Limited to weir flow at low heads |
| #2 | Device 3 | 95.50' | 48.0" x 48.0" Horiz. Grate C = 0.600 | |
| #3 | Primary | 92.03' | 12.0" Round Culvert\n L = 30.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 92.03'/91.65' $ S = 0.0127'/' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79 $ sf |
| Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=94.30' (Free Discharge)\n uparrow3=Culvert (Passes 0.00 cfs of 5.72 cfs potential flow)\n uparrow1=Orifice ( Controls 0.00 cfs)\n—2=Grate ( Controls 0.00 cfs) |