5.2.-5.4. PCSR 09-13-2011 - Laserfiche WebLink

Home Browse Search

T:\0742\1406\June11 CityApp\Surface Water\ ER Landfill 06_2011-dead storage affect Type ll 24-hr 100 yr Rainfall=5.90" Prepared by Wenck Associates, Inc. Printed 8/15/2011 HydroCAD® 9.10 s/n 02201 ©2010 HydroCAD Software Solutions LLC Page 69 Summary for Pond 25P: Basin east of RR, NW of S expansion [79] Warning: Submerged Pond P-1 Primary device # 1 OUTLET by 5.01' Inflow Area = 43.399 ac, 0.28% Impervious, Inflow Depth > 3.16" for 100 yr event Inflow = 15.73 cfs @ 12.14 hrs, Volume= 11.411 of Outflow = 10.49 cfs @ 16.90 hrs, Volume= 11.383 af, Atten= 33%, Lag= 285.9 min Primary = 10.49 cfs @ 16.90 hrs, Volume= .11.383 of Routing by Stor-Ind method, Time Span= 0.00-96.00 hrs, dt= 0.02 hrs Peak Elev= 962.01' @ 16.90 hrs Surf.Area= 0.751 ac Storage= 1.495 of Plug-Flow detention time= 88.9 min calculated for 11.383 of (100% of inflow) Center-of-Mass det. time= 79.3 min (1,230.9 - 1,151.5 ) Volume Invert Avail.Storage Storage Description #1 958.00' 3.450 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 958.00. 0.080 0.000 0.000 960.00 0.330 0.410 0.410 962.00 0.750 1.080 1.490 964.00 1.210 1.960 3.450 Device Routing Invert Outlet Devices #1 Primary 963.50' 8.0' long x 8.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.43 2.54 2.70 2.69 2.68 2.68 2.66 2.64 2.64 2.64 2.65 2.65 2.66 2.66 2.68 2.70 2.74 #2 Primary 958.23' 15.0" Round Culvert L= 25.0' RCP, square edge headwall, Ke= 0.500 Inlet /Outlet Invert= 958.23' / 958.06' S= 0.0068 '/' Cc= 0.900 n= 0.013 Primary OutFlow Max=10.49 cfs @ 16.90 hrs HW=962.01' (Free Discharge) ~1=Broad-Crested Rectangular Weir(Controls 0.00 cfs) 2=Culvert (Inlet Controls 10.49 cfs @ 8.55 fps)