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SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.350 <br /> SUBAREA AREA(ACRES) = 0.16 INITIAL SUBAREA RUNOFF(CFS) = 0.72 <br /> ** ADD SUBAREA RUNOFF TO MAINLINE AT MAINLINE Tc: <br /> MAINLINE Tc(MIN.) = 6.75 <br /> * 100 YEAR RAINFALL INTENSITY(INCH/HR) = 5.210 <br /> SUBAREA AREA(ACRES) = 0.16 SUBAREA RUNOFF(CFS) = 0.71 <br /> EFFECTIVE AREA(ACRES) = 0.87 AREA-AVERAGED Fm(INCH/HR) = 0.11 <br /> AREA-AVERAGED Fp(INCH/HR) = 0.40 AREA-AVERAGED Ap = 0.28 <br /> TOTAL AREA(ACRES) = 0.9 PEAK FLOW RATE(CFS) = 3.98 <br /> ============================================================================ <br /> END OF STUDY SUMMARY: <br /> TOTAL AREA(ACRES) = 0.9 TC(MIN.) = 6.75 <br /> EFFECTIVE AREA(ACRES) = 0.87 AREA-AVERAGED Fm(INCH/HR)= 0.11 <br /> AREA-AVERAGED Fp(INCH/HR) = 0.40 AREA-AVERAGED Ap = 0.281 <br /> PEAK FLOW RATE(CFS) = 3.98 <br /> ** PEAK FLOW RATE TABLE ** <br /> STREAM Q Tc Intensity Fp(Fm) Ap Ae HEADWATER <br /> NUMBER (CFS) (MIN.) (INCH/HR) (INCH/HR) (ACRES) NODE <br /> 1 3.83 5.59 5.806 0.40( 0.11) 0.28 0.7 60.00 <br /> 2 3.95 6.43 5.357 0.40( 0.11) 0.28 0.8 30.00 <br /> 3 3.97 6.63 5.264 0.40( 0.11) 0.28 0.9 10.00 <br /> 4 3.98 6.75 5.210 0.40( 0.11) 0.28 0.9 110.00 <br /> 5 3.92 6.95 5.125 0.40( 0.11) 0.28 0.9 90.00 <br /> ============================================================================ <br /> ============================================================================ <br /> END OF RATIONAL METHOD ANALYSIS <br />914-918 N Bewley <br />St5/8/2025