1988-04-20_PERMIT FILE - C1981008A

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JUNCTION 1, BRANCH 1, STRUCTURE 1 * * * * * * * * * * * * * * * * * * * * * * * *** HYDRAULIC INPUT VALUES FOR SUBWATERSHEDS *** WATER AREA CURVE 1C TT ROUTING COEFFICIENTS UNIT SHED ACRES NUMBER IIR 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 28.49 0.98 656.12 0.008 0.915 1.000 NOTE: SEDIMENT DOES NOT INCLUDE POSSIBLE DEPOSITION BY DELIVERY RATIO 2 ***** SUMMARY TABLE FOR TOTAL WATERSHED ***** --------------------------------------------- RUNOFF VOLUME = 2.5341 ACRE-FT PEAK DISCHARGE = 28.4879 CFS AREA = 31.0000 ACRES TIME OF PEAK DISCHARGE = 12.00 HRS BETA = 1.0000 RAINFALL EROSITIVITY FACTOR = 32.38 El UNIT PEAK CONCENTRATION = 314659.62 MG/L PEAK SETTLEABLE CONCENTRATION = 113.38 ML/L PEAK SETTLEABLE CONCENTRATION = 141725.87 MG/L TOTAL SEDIMENT YIELD = 656.1199 TONS REPRESENTATIVE PARTICLE SIZE = 0.0080 MM TIME OF PEAK CONCENTRATION = 12.00 HRS PERIOD OF SIGNIFICANT CONCENTRATION = 14.60 HRS VOLUME WEIGHTED AVERAGE SETTLEABLE CONCENTRATION DURING PERIOD OF SIGNIFICANT CONCENTRATION = 61.46 ML/L VOLUME WEIGHTED AVERAGE SETTLEABLE CONCENTRATION DURING PEAK 24 HOUR PERIOD = 61.46 ML/L ARITHMETIC AVERAGE SETTLEABLE CONCENTRATION DURING PERIOD OF SIGNIFICANT CONCENTRATION = C.00 ML/L ARITHMETIC AVERAGE SETTLEABLE CONCENTRATION DURING PEAK 24 HOUR PERIOD = 16.92 ML/L