DETPOND for Windows Version 7.2.2 (c) Copyright Robert Pitt and John Voorhees 1996 All Rights Reserved Pond file name: E:\JamesCourse\Assignment\A9\A9_5Y.pnd Pond file description: Medium Density Residential Subdivision, Area=70 acres Rain file name: Model Run Start Date: Model Run End Date: Date of run: 02-19-2002 Time of run: 08:39:36 Rain Number: 1 Starting Date of Rain: A B C D E F G H I J K L Time Inflow Hydraulic Natural Evapor- Total Storage Pond Pond Upflow Crit Part % Part Sol (days) (cfs) Outflow Seepage ation Outflow Above Stage Surface Velocity Size Control ** (cfs) (cfs) (cfs) (cfs) Datum (ft) Area (ft/hr) (microns) (cu ft) (sq ft) 0.0000 0.000 0.000 0.000 0.000 0.000 61376 3.000 24394 0.000 0.0 100.000 0.0035 18.230 0.006 0.000 0.000 0.006 64110 3.111 24751 0.001 0.0 99.972 0.0069 37.100 0.172 0.000 0.000 0.172 72383 3.437 25803 0.024 0.8 99.210 0.0104 51.910 1.127 0.000 0.000 1.127 85539 3.929 27501 0.148 2.7 91.109 * 0.0139 70.460 3.988 0.000 0.000 3.988 103128 4.543 29641 0.484 4.9 82.525 * 0.0174 102.230 8.909 0.000 0.000 8.909 127096 5.356 32473 0.988 7.0 75.971 * 0.0208 170.670 16.531 0.000 0.000 16.531 164215 6.615 36860 1.615 8.9 70.304 * 0.0243 170.140 25.726 0.000 0.000 25.726 208998 8.133 42152 2.197 10.5 66.014 * 0.0278 150.770 33.777 0.000 0.000 33.777 248209 9.463 46785 2.599 11.5 64.005 * 0.0313 136.430 40.340 0.000 0.000 40.340 280171 10.547 50562 2.872 12.1 62.834 * 0.0347 125.120 45.744 0.000 0.000 45.744 306491 11.439 53672 3.068 12.5 61.993 * 0.0382 114.690 50.175 0.000 0.000 50.175 328074 12.171 56223 3.213 12.8 61.374 * 0.0417 106.360 53.782 0.000 0.000 53.782 345638 12.767 58298 3.321 13.0 60.916 * 0.0451 0.000 53.746 0.000 0.000 53.746 345462 12.761 58278 3.320 13.0 60.920 * 0.0486 0.000 50.534 0.000 0.000 50.534 329820 12.230 56429 3.224 12.8 61.326 * 0.0521 0.000 47.514 0.000 0.000 47.514 315113 11.732 54691 3.128 12.6 61.739 * 0.0556 0.000 44.675 0.000 0.000 44.675 301284 11.263 53057 3.031 12.4 62.152 * 0.0590 0.000 42.005 0.000 0.000 42.005 288282 10.822 51521 2.935 12.2 62.564 * 0.0625 0.000 39.495 0.000 0.000 39.495 276056 10.407 50076 2.839 12.0 62.974 * 0.0660 0.000 37.135 0.000 0.000 37.135 264562 10.017 48718 2.744 11.8 63.383 * 0.0694 0.000 34.915 0.000 0.000 34.915 253754 9.651 47441 2.650 11.6 63.788 * 0.0729 0.000 32.829 0.000 0.000 32.829 243592 9.306 46240 2.556 11.4 64.221 * 0.0764 0.000 30.867 0.000 0.000 30.867 234038 8.982 45111 2.463 11.2 64.683 * 0.0799 0.000 29.023 0.000 0.000 29.023 225054 8.678 44049 2.372 10.9 65.140 * 0.0833 0.000 27.288 0.000 0.000 27.288 216607 8.391 43051 2.282 10.7 65.591 * 0.0868 0.000 25.657 0.000 0.000 25.657 208665 8.122 42112 2.193 10.5 66.033 * 0.0903 0.000 24.124 0.000 0.000 24.124 201198 7.869 41230 2.106 10.3 66.468 * This pond stage elevation is higher than the highest control outlet structure (el: 4.5 ft). The pond bank is overtopped - increase the size of the emergency spillway. This stage value assumes outflow is constant and equal to the highest value on the rating curve. Time increment (min) = 5.00 Number of increments = 26 Rain depth (in) (N/A for user defined inlet hydrograph): 0.00 Rain duration (days): 0.00 Event duration (days): 0.00 Interevent duration (days): 0.00 Inflow rate to pond (cfs): max= 170.7 Outflow rate from pond (cfs): min= 0.0 max= 53.8 time weighted ave= 30.8 Net inflow volume (cu ft) - event: 136209 cumulative: 136209 Total inflow volume to pond (cu ft): 376233 Outflow volumes (cu ft) - hydraulic: 240024 - seepage: - evaporation: - total outflow: 240024 Pond Storage above lowest invert (cu ft): max = 284262 Pond Storage below lowest invert (cu ft): 61376 Pond stage above datum for event (ft): min= 3.00 max= 12.77 Pond surface area for event (sq ft): min= 24394 max= 58298 Event flushing ratio (total inflow volume/pond storage below invert): 6.13 Upflow velocity for event (ft/hr): min= 0.000 max= 3.321 Minimum particle size controlled (microns): flow weighted average= 11.8 Particulate solids control (percent): min= 60.9 flow weighted average= 63.4 Peak Reduction Factor (mPRF): 0.68 *** The largest ave particle size discharged during any time increment: 13.0 microns Particle Size Distribution Percent of |<=============== Particle Size (microns) ==============>| Particles Pond |<======= Pond Outflow During Event =======>| Larger Inflow |<======= User==>| than Size During Theoretical n=8 n=3 n=1 Defined n Indicated Event *** n = 5 0 > 2000.0 11.8 32.5 53.3 233.3 32.5 10 > 233.3 10.3 12.2 13.0 19.7 12.5 20 > 95.0 8.8 8.9 9.8 12.6 9.2 30 > 53.3 7.5 7.4 7.8 9.4 7.5 40 > 32.5 6.3 5.8 6.2 7.5 6.0 50 > 21.0 5.2 4.8 5.0 5.7 4.9 60 > 13.5 4.2 3.8 4.0 4.6 3.9 70 > 9.0 3.3 2.9 3.0 3.4 2.9 80 > 5.7 2.2 1.9 2.0 2.3 1.9 90 > 3.0 1.1 1.0 1.0 1.1 1.0 100 > 0.0 0.0 0.0 0.0 0.0 0.0 Row A: 13.0 32.5 53.3 233.3 32.5 Row B: 11.8 Row C: 63.4 68.5 67.2 62.5 68.0 Row A: Largest ave particle size discharged (microns) during any time event Row B: Flow weighted average minimum particle size controlled (microns) Row C: Percent particulate solids removed