Laserfiche WebLink
"TRAVEL TIME COMPUTED USING ESTIMATED FLOW(CFS) = 2.73 <br />STREETFLOW MODEL RESULTS USING ESTIMATED FLOW: <br />STREET FLOW DEPTH(FEET) = 0.32 <br />HALFSTREET FLOOD WIDTH(FEET) = 9.78 <br />AVERAGE FLOW VELOCITY(FEET/SEC.) - 2.54 <br />PRODUCT OF DEPTH&VELOCITY(FT*FT/SEC.) = 0.82 <br />STREET FLOW TRAVEL TIME(MIN.) = 6.41 Tc(MIN.) = 11.41 <br />* 100 YEAR RAINFALL INTENSITY(INCH/HR) = 3.856 <br />SUBAREA LOSS RATE DATA(AMC II): <br />DEVELOPMENT TYPE/ SCS SOIL AREA Fp Ap SCS <br />LAND USE GROUP (ACRES) (INCH/HR) (DECIMAL) CN <br />COMMERCIAL B 1.23 0.30 0.100 56 <br />SUBAREA AVERAGE PERVIOUS LOSS RATE, Fp(INCH/HR) = 0.30 <br />SUBAREA AVERAGE PERVIOUS AREA FRACTION, Ap = 0.100 <br />SUBAREA AREA(ACRES) - 1.23 SUBAREA RUNOFF(CFS) - 4.23 <br />EFFECTIVE AREA(ACRES) - 1.33 AREA -AVERAGED Fm(INCH/HR) - 0.03 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) - 1.3 PEAK FLOW RATE(CFS) - 4.58 <br />END OF SUBAREA STREET FLOW HYDRAULICS: <br />DEPTH(FEET) = 0.37 HALFSTREET FLOOD WIDTH(FEET) = 12.16 <br />FLOW VELOCITY(FEET/SEC.) = 2.87 DEPTH*VELOCITY(FT*FT/SEC.) = 1.06 <br />LONGEST FLOWPATH FROM NODE 230.00 TO NODE 260.00 = 1000.00 FEET. <br />a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa <br />FLOW PROCESS FROM NODE 260.00 TO NODE 260.00 IS CODE = 1 <br />»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< <br />»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< <br />TOTAL NUMBER OF STREAMS = 9 <br />CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 9 ARE: <br />TIME OF CONCENTRATION(MIN.) = 11.41 <br />RAINFALL INTENSITY(INCH/HR) = 3.86 <br />AREA -AVERAGED Fm(INCH/HR) - 0.03 <br />AREA -AVERAGED Fp(INCH/HR) - 0.30 <br />AREA -AVERAGED Ap = 0.10 <br />EFFECTIVE STREAM AREA(ACRES) - 1.33 <br />TOTAL STREAM AREA(ACRES) - 1.33 <br />PEAK FLOW RATE(CFS) AT CONFLUENCE - 4.58 <br />" CONFLUENCE DATA " <br />STREAM Q Tc <br />Intensity <br />Fp(Fm) <br />Ap <br />Ae <br />HEADWATER <br />NUMBER (CIS) (MIN.) <br />(INCH/HR) <br />(INCH/HR) <br />(ACRES) <br />NODE <br />1 20.11 7.12 <br />5.052 <br />0.30( 0.03) <br />0.10 <br />3.7 <br />200.00 <br />1 20.45 8.03 <br />4.716 <br />0.30( 0.03) <br />0.10 <br />4.2 <br />210.00 <br />2 16.47 8.30 <br />4.627 <br />0.30( 0. 04) <br />0.14 <br />4.0 <br />220.00 <br />3 3.66 16.39 <br />3.133 <br />0.30( 0.03) <br />0.10 <br />1.3 <br />240.00 <br />9 4.58 11.41 <br />3.856 <br />0.30( 0.03) <br />0.10 <br />1.3 <br />230.00 <br />RAINFALL INTENSITY AND TIME <br />OF CONCENTRATION <br />RATIO <br />CONFLUENCE FORMULA USED FOR <br />9 STREAMS. <br />" PEAK FLOW RATE TABLE " <br />STREAM Q Tc <br />Intensity <br />Fp(Fm) <br />Ap <br />Ae <br />HEADWATER <br />NUMBER (CIS) (MIN.) <br />(INCH/HR) <br />(INCH/HR) <br />(ACRES) <br />NODE <br />1 41.87 7.12 <br />5.052 <br />0.30( 0.03) <br />0.12 <br />8.6 <br />200.00 <br />2 43.34 8.03 <br />4.716 <br />0.30( 0.03) <br />0.12 <br />9.6 <br />210.00 <br />3 43.27 8.30 <br />4.627 <br />0.30( 0.03) <br />0.12 <br />9.8 <br />220.00 <br />9 39.64 11.41 <br />3.856 <br />0.30( 0.03) <br />0.11 <br />10.4 <br />230.00 <br />5 32.02 16.39 <br />3.133 <br />0.30( 0.03) <br />0.11 <br />10.8 <br />240.00 <br />COMPUTED CONFLUENCE ESTIMATES <br />ARE AS <br />FOLLOWS: <br />PEAK FLOW RATE(CFS) - <br />43.34 <br />Tc(MIN.) - <br />8.03 <br />EFFECTIVE AREA(ACRES) = <br />9.62 <br />AREA -AVERAGED <br />Fm(INCH/HR) <br />= 0.03 <br />AREA -AVERAGED Fp(INCH/HR) <br />= 0.30 <br />AREA -AVERAGED <br />Ap = <br />0.12 <br />TOTAL AREA(ACRES) = <br />10.8 <br />LONGEST FLOWPATH FROM NODE <br />240.00 <br />TO NODE <br />260.00 <br />= 1022.00 FEET. <br />-- -- -- -- -- -- -- -- -- <br />END OF STUDY SUMMARY: <br />-- -- -- <br />-- -- -- -- <br />-- -- <br />-- -- -- <br />-- -- <br />-- <br />TOTAL AREA(ACRES) - <br />10.8 <br />TC(MIN.) - <br />8.03 <br />EFFECTIVE AREA(ACRES) = <br />9.62 <br />AREA -AVERAGED <br />Fm(INCH/HR)= <br />0.03 <br />7 <br />