1988-04-18_PERMIT FILE - C1981008A

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* * * * * * * * * * * * * * * * * * * * * * * JUNCTION 2, BRANCH 2, STRUCTURE 3 * * * * * * * * * * * * * * * * * * * * * * * *** HYDRAULIC INPUT VALUES FOR SUBWATERSHEDS *** WATER AREA CURVE TC TT ROUTING COEFFICIENTS UNIT SHED ACRES NUMBER HR HR K-HRS X HYDRO ------------------------------------------------------------------------ 1 35.00 77.00 0.340 0.000 0.000 0.00 1.0 *** SEDIMENT INPUT VALUES FOR SUBWATERSHEDS *** WATER SEG SOIL LENGTH SLOPE CP PART SURF SHED NUM K FEET PCT VALUE OPT COND ---------------------------------------------------------------------------- 1 1 0.25 600.0 5.83 1.000 1 .0 0,0 * * * COMPUTED VALUES FOR INDIVIDUAL WATERSHEDS * * * WATERSHED PEAK FLOW RUNOFF SEDIMENT DIAM DELIVERY DELIVERY (CFS) ( INCHES) TONS (MM) RATIO 1 RATIO 2 ---------------------------------------------------------------------- 1 5.118 0.25 81.97 0.005 0.707 1.000 NOTE: SEDIMENT DOES NOT INCLUDE POSSIBLE DEPOSITION BY DELIVERY RATIO 2 ***** SUMMARY TABLE FOR TOTAL WATERSHED ***** --------------------------------------------- 13UNOFF VOLUME = 0.7349 ACRE-FT PEAK DISCHARGE = 5.4763 CFS AREA = 35.0000 ACRES TIME OF PEAK DISCHARGE = 12.20 HRS BETA = 1.0000 RAINFALL EROSITIVITY FACTOR = 13.39 El UNIT PEAK CONCENTRATION = 152032.00 MG/L PEAK SETTLEABLE CONCENTRATION = 39.09 ML/L PEAK SETTLEABLE CONCENTRATION = 54339.48 MG/L TOTAL SEDIMENT YIELD = 81.9720 TONS REPRESENTATIVE PARTICLE SIZE = 0.0053 MM TIME OF PEAK CONCENIRATION = 12.20 IIRS PERIOD OF SIGNIFICANT CONCENTRATION = 13.00 IRS VOLUME WEIGHTED AVERAGE SETTLEABLE CONCENTRATION DURING PERIOD OF SIGNIFICANT CONCENTRATION = 20.14 ML/L VOLUME WEIGHTED AVERAGE SETTLEABLE CONCENTRATION DURING PEAK 24 HOUR PERIOD = 2C.14 ML/L ARITHMETIC AVERAGE SETTLEABLE CONCENTRATION DURING PERIOD OF SIGNIFICANT CONCENTRATION = 0.00 ML/L ARITHMETIC AVERAGE SETTLEABLE CONCENTRATION DURING PEAK 24 HOUR PERIOD = 7.05 ML/L *** PARTICLE SIZE DISTRIBUTION OF SEDIMENT ***