1988-04-20_PERMIT FILE - C1981008A

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�F 1F * N A �F IF 1F * iF iF IF 1F it iF * iF * * �F it i► �F JUNCTION 1, BRANCH 1, STRUCTURE 1 * * * * * * * * * * * * * * * * * * * * * * * *** HYDRAULIC INPUT VALUES FOR SUBWATERSHEDS *** WATER AREA CURVE TC TT ROUTING COEFFICIENTS UNIT SHED ACRES NUMBER FIR HR K-HRS X HYDRO ------------------------------------------------------------------------ 1 31.00 83.00 0.194 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 0.24 0.0 2.62 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 12.29 0.44 260.77 0.007 0.875 1.t)00 NOTE: SEDIMENT DOES NOT INCLUDE POSS►BLE DEPOSITION BY DELIVERY RATIO 2 ***** SUMMARY TABLE FOR TOTAL WATERSHED ***** --------------------------------------------- RUNOFF VOLUME = 1.1303 ACRE-FT PEAK DISCHARGE = 12.2946 CFS AREA = 31.0000 ACRES TIME OF PEAK DISCHARGE = 12.10 HRS BETA = 1.0000 •RAINFALL EROSITIVITY FACTOR = 13.39 El UNIT PEAK CONCENTRATION = 297473.50 MG/L PEAK SETTLEABLE CONCENTRATION = 101.45 ML/L PEAK SETTLEABLE CONCENTRATION = 126810.06 MG/L TOTAL SEDIMENT YIELD = 260.7722 TONS REPRESENTATIVE PARTICLE SIZE = 0.0071 MM TIME OF PEAK CONCENTRATION = 12.10 HRS PERIOD OF SIGNIFICANT CONCENTRATION = 13.10 HRS VOLUME WEIGHTED AVERAGE SETTLEABLE CONCENTRATION DURING PERIOD OF SIGNIFICANT CONCENTRATION = 52.55 ML/L VOLUME WEIGHTED AVERAGE SETTLEABLE CONCENTRATION DURING PEAK 24 HOUR PERIOD = 52.55 ML/L ARITHMETIC AVERAGE SETTLEABLE CONCENTRATION DURING PERIOD OF SIGNIFICANT CONCENTRATION = 0.00 ML/L ARITHMETIC AVERAGE SETTLEABLE CONCENTRATION DURING PEAK 24 HOUR PERIOD = 15.13 ML/L