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MPA2.OUT <br />AREA -AVERAGED Ap = 0.10 <br />EFFECTIVE STREAM AREA(ACRES) = 7.69 <br />TOTAL STREAM AREA(ACRES) = 7.69 <br />PEAK FLOW RATE(CFS) AT CONFLUENCE = 12.04 <br />** CONFLUENCE DATA ** <br />STREAM <br />Q <br />Tc <br />Intensity <br />Fp(Fm) Ap <br />Ae HEADWATER <br />NUMBER <br />(CFS) <br />(MIN.) <br />(INCH/HR) <br />(INCH/HR) <br />(ACRES) NODE <br />1 <br />14.40 <br />11.96 <br />1.372 <br />0.30( 0.03) 0.10 <br />11.9 110.00 <br />2 <br />12.04 <br />8.79 <br />1.637 <br />0.30( 0.03) 0.10 <br />7.7 120.00 <br />RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO <br />CONFLUENCE FORMULA USED FOR 2 STREAMS. <br />** PEAK FLOW RATE TABLE ** <br />STREAM Q Tc <br />Intensity <br />Fp(Fm) <br />Ap Ae <br />HEADWATER <br />NUMBER (CFS) (MIN.) <br />(INCH/HR) <br />(INCH/HR) <br />(ACRES) <br />NODE <br />1 24.72 8.79 <br />1.637 <br />0.30( 0.03) <br />0.10 16.4 <br />120.00 <br />2 24.46 11.96 <br />1.372 <br />0.30( 0.03) <br />0.10 19.6 <br />110.00 <br />COMPUTED CONFLUENCE ESTIMATES <br />ARE AS FOLLOWS: <br />PEAK FLOW RATE(CFS) = <br />24.72 <br />Tc(MIN.) = <br />8.79 <br />EFFECTIVE AREA(ACRES) = <br />16.43 <br />AREA -AVERAGED <br />Fm(INCH/HR) <br />= 0.03 <br />AREA -AVERAGED Fp(INCH/HR) <br />= 0.30 <br />AREA -AVERAGED <br />Ap = 0.10 <br />TOTAL AREA(ACRES) = <br />19.6 <br />LONGEST FLOWPATH FROM NODE <br />---------------------------------------------------------------------------- <br />110.00 TO NODE <br />160.00 = 2060.00 FEET. <br />END OF STUDY SUMMARY: <br />TOTAL AREA(ACRES) = <br />19.6 <br />TC(MIN.) = <br />8.79 <br />EFFECTIVE AREA(ACRES) = <br />16.43 <br />AREA -AVERAGED <br />Fm(INCH/HR)= <br />0.03 <br />AREA -AVERAGED Fp(INCH/HR) <br />= 0.30 <br />AREA -AVERAGED <br />Ap = 0.100 <br />PEAK FLOW RATE(CFS) = <br />24.72 <br />** PEAK FLOW RATE TABLE ** <br />STREAM Q Tc <br />Intensity <br />Fp(Fm) <br />Ap Ae <br />HEADWATER <br />NUMBER (CFS) (MIN.) <br />(INCH/HR) <br />(INCH/HR) <br />(ACRES) <br />NODE <br />1 24.72 8.79 <br />1.637 <br />0.30( 0.03) <br />0.10 16.4 <br />120.00 <br />2 24.46 11.96 <br />---------------------------------------------------------------------------- <br />1.372 <br />0.30( 0.03) <br />0.10 19.6 <br />110.00 <br />---------------------------------------------------------------------------- <br />END OF RATIONAL METHOD ANALYSIS <br />n <br />Page 12 <br />