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.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: 08:50:21 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 3.220 0.000 0.000 0.000 0.000 61859 3.020 24457 0.000 0.0 99.999 0.0069 9.890 0.004 0.000 0.000 0.004 63825 3.099 24714 0.001 0.0 99.980 0.0104 18.590 0.052 0.000 0.000 0.052 68088 3.269 25262 0.007 0.2 99.757 0.0139 45.050 0.435 0.000 0.000 0.435 77561 3.635 26474 0.059 1.8 95.248 * 0.0174 293.290 8.872 0.000 0.000 8.872 126916 5.350 32452 0.984 7.0 76.004 * 0.0208 206.080 23.263 0.000 0.000 23.263 197002 7.727 40734 2.056 10.1 66.720 * 0.0243 154.560 32.648 0.000 0.000 32.648 242711 9.277 46136 2.548 11.4 64.262 * 0.0278 128.230 39.146 0.000 0.000 39.146 274360 10.350 49876 2.826 12.0 63.033 * 0.0313 112.720 44.006 0.000 0.000 44.006 298029 11.152 52673 3.008 12.4 62.253 * 0.0347 100.040 47.733 0.000 0.000 47.733 316182 11.768 54818 3.135 12.6 61.708 * 0.0382 87.210 50.476 0.000 0.000 50.476 329537 12.221 56396 3.222 12.8 61.334 * 0.0417 80.250 52.463 0.000 0.000 52.463 339215 12.549 57540 3.282 13.0 61.076 * 0.0451 0.000 51.725 0.000 0.000 51.725 335624 12.427 57115 3.260 12.9 61.170 * 0.0486 0.000 48.634 0.000 0.000 48.634 320570 11.917 55336 3.164 12.7 61.583 * 0.0521 0.000 45.728 0.000 0.000 45.728 306415 11.437 53663 3.068 12.5 61.996 * 0.0556 0.000 42.995 0.000 0.000 42.995 293106 10.985 52091 2.971 12.3 62.408 * 0.0590 0.000 40.426 0.000 0.000 40.426 280593 10.561 50612 2.875 12.1 62.819 * 0.0625 0.000 38.010 0.000 0.000 38.010 268827 10.162 49222 2.780 11.9 63.229 * 0.0660 0.000 35.739 0.000 0.000 35.739 257764 9.787 47914 2.685 11.7 63.635 * 0.0694 0.000 33.603 0.000 0.000 33.603 247363 9.434 46685 2.591 11.5 64.044 * 0.0729 0.000 31.595 0.000 0.000 31.595 237583 9.103 45530 2.498 11.2 64.509 * 0.0764 0.000 29.707 0.000 0.000 29.707 228387 8.791 44443 2.406 11.0 64.968 * 0.0799 0.000 27.932 0.000 0.000 27.932 219741 8.498 43421 2.316 10.8 65.421 * 0.0833 0.000 26.263 0.000 0.000 26.263 211612 8.222 42461 2.227 10.6 65.867 * 0.0868 0.000 24.693 0.000 0.000 24.693 203969 7.963 41557 2.139 10.3 66.305 * 0.0903 0.000 23.217 0.000 0.000 23.217 196782 7.719 40708 2.053 10.1 66.734 * 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= 293.3 Outflow rate from pond (cfs): min= 0.0 max= 52.5 time weighted ave= 30.7 Net inflow volume (cu ft) - event: 131929 cumulative: 131929 Total inflow volume to pond (cu ft): 371739 Outflow volumes (cu ft) - hydraulic: 239810 - seepage: - evaporation: - total outflow: 239810 Pond Storage above lowest invert (cu ft): max = 277839 Pond Storage below lowest invert (cu ft): 61376 Pond stage above datum for event (ft): min= 3.00 max= 12.55 Pond surface area for event (sq ft): min= 24394 max= 57540 Event flushing ratio (total inflow volume/pond storage below invert): 6.06 Upflow velocity for event (ft/hr): min= 0.000 max= 3.282 Minimum particle size controlled (microns): flow weighted average= 11.9 Particulate solids control (percent): min= 61.1 flow weighted average= 63.3 Peak Reduction Factor (mPRF): 0.82 *** 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 11.9 32.5 53.3 233.3 32.5 10 > 233.3 10.3 12.2 13.1 19.7 12.5 20 > 95.0 8.8 8.9 9.8 12.6 9.2 30 > 53.3 7.6 7.4 7.8 9.4 7.5 40 > 32.5 6.3 5.9 6.2 7.5 6.0 50 > 21.0 5.2 4.8 5.0 5.7 4.9 60 > 13.5 4.3 3.9 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: 11.9 Row C: 63.3 68.4 67.1 62.4 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