NOAA 24-hr D 2-Year Rainfall=3.42" Printed 04/12/2025
102 Sams -REV 12-02-25 Prepared by Haler Consulting HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC
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Summary for Pond 130P: SUBSURFACE
Inflow Area = 4,000 sf, 0.00% Impervious, Inflow Depth = 3.19" for 2-Year event Inflow = 0.24 cfs @ 12.14 hrs, Volume= 1,062 cf Outflow = 0.04 cfs @ 11.60 hrs, Volume= 1,062 cf, Atten= 83%, Lag= 0.0 min Discarded = 0.04 cfs @ 11.60 hrs, Volume= 1,062 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 1.35' @ 12.81 hrs Surf.Area= 533 sf Storage= 277 cf Plug-Flow detention time= 41.5 min calculated for 1,062 cf (100% of inflow) Center-of-Mass det. time= 41.5 min (802.1 - 760.5)
VolumeInvertAvail.StorageStorage Description
#1A0.00'765 cf13.00'W x 41.00'L x 5.00'H Field A
2,664 cf Overall - 751 cf Embedded = 1,914 cf x 40.0% Voids
#2A1.00'573 cfADS N-12 30" x 6 Inside #1 Inside= 30.0"W x 30.0"H => 4.90 sf x 20.00'L = 98.0 cf Outside= 36.0"W x 36.0"H => 6.42 sf x 20.00'L = 128.3 cf Row Length Adjustment= -1.00' x 4.90 sf x 3 rows
1,339 cf Total Available Storage
Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded0.00'3.250 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.04 cfs @ 11.60 hrs HW=0.05' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.04 cfs)