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2018-79 As-built
Rana Rain Garden Project: Basin Description: Contour Contour Depth Incremental Cumulative IncrementalCumulative Elevation Area (ft) Volume Volume Volume Volume (sq. ft) Avg. End Avg. End Conic Conic (cu. ft) (cu. ft) (cu. ft) (cu. ft) 906.600 13.64 N/A N/A 0.00 N/A 0.00 906.700 79.13 0.100 4.64 4.64 4.19 4.19 906.800 130.24 0.100 10.47 15.11 10.36 14.55 906.900 216.16 0.100 17.32 32.43 17.14 31.69 907.000 281.55 0.100 24.89 57.31 24.81 56.50 907.100 335.13 0.100 30.83 88.15 30.80 87.30 907.200 388.73 0.100 36.19 124.34 36.16 123.46 907.300 444.65 0.100 41.67 166.01 41.64 165.10 907.400 499.90 0.100 47.23 213.24 47.20 212.30 907.500 542.42 0.100 52.12 265.35 52.10 264.40 907.600 578.02 0.100 56.02 321.38 56.01 320.41 907.700 608.80 0.100 59.34 380.72 59.33 379.75 907.800 637.71 0.100 62.33 443.04 62.32 442.07 907.900 663.59 0.100 65.06 508.11 65.06 507.13Page 1 Type II 24-hr 1.1" Rainfall=1.10"3094-009 HYDRO PROP Printed 9/16/2019Prepared by M&P Engineering and Surveying Associates, Inc. HydroCAD® 10.00-25 s/n 01304 © 2019 HydroCAD Software Solutions LLC Summary for Pond 5P: Raingarden Inflow Area = 0.231 ac, 35.06% Impervious, Inflow Depth = 0.31" for 1.1" event Inflow = 0.12 cfs @ 11.97 hrs, Volume= 0.006 af Outflow = 0.10 cfs @ 12.01 hrs, Volume= 0.004 af, Atten= 15%, Lag= 2.6 min Primary = 0.10 cfs @ 12.01 hrs, Volume= 0.004 af Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 6 Peak Elev= 907.15' @ 12.01 hrs Surf.Area= 377 sf Storage= 115 cf Plug-Flow detention time= 187.8 min calculated for 0.004 af (62% of inflow) Center-of-Mass det. time= 84.5 min ( 865.8 - 781.3 ) Volume Invert Avail.Storage Storage Description #1 906.80' 476 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 906.80 277 0 0 907.90 588 476 476 Device Routing Invert Outlet Devices #1 Primary 907.11'5.0' long x 5.0' 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) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=0.10 cfs @ 12.01 hrs HW=907.15' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 0.10 cfs @ 0.48 fps)