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Data for CENTERVILLE PROP DRAINAGE 10 -24 -00 Page 3 <br /> TYPE II 24 -HOUR RAINFALL= 5.90 IN <br /> Prepared by James R.Bill, Inc. 26 Oct 00 <br /> HydroCAD 5.11 000744 (c) 1986 -1999 Applied Microcomputer Systems <br /> SUBCATCHMENT 120 <br /> PEAK= 33.55 CFS @ 12.05 HRS, VOLUME= 2.42 AF <br /> ACRES CN SCS TR -20 METHOD <br /> 2.53 98 IMPERVIOUS TYPE II 24 -HOUR <br /> 1.17 98 OPEN WATER RAINFALL= 5.90 IN <br /> 4.87 61 GRASS SPAN= 0 -40 HRS, dt =.1 HRS <br /> 8.57 77 <br /> Method Comment Tc (min) <br /> DIRECT ENTRY ROOF TO GROUND 2.0 <br /> TR -55 SHEET FLOW Segment ID: 11.7 <br /> Grass: Dense n =.24 L =70' P2 =2.7 in s =.02 '/' <br /> DIRECT ENTRY GUTTER FLOW @ 3 FPS 2.3 <br /> CIRCULAR CHANNEL Segment ID: 1.3 <br /> 18" Diameter a =1.77 sq -ft Pw =4.7' r =.375' <br /> s =.005 '/' n =.013 V =4.2 fps L =330' Capacity =7.4 cfs <br /> Total Length= 400 ft Total Tc= 17.3 <br /> SUBCATCHMENT 130 <br /> PEAK= 37.13 CFS @ 12.09 HRS, VOLUME= 2.88 AF <br /> ACRES CN SCS TR -20 METHOD <br /> 2.59 98 IMPERVIOUS TYPE II 24 -HOUR <br /> .45 98 OPEN WATER RAINFALL= 5.90 IN <br /> 9.62 61 GRASS SPAN= 0 -40 HRS, dt =.1 HRS <br /> 12.66 70 <br /> Method Comment Tc (min) <br /> DIRECT ENTRY ROOF TO GROUND 2.0 <br /> TR -55 SHEET FLOW Segment ID: 13.6 <br /> Grass: Dense n =.24 L =85' P2 =2.7 in s =.02 1 / 1 <br /> SHALLOW CONCENTRATED /UPLAND FLOW Segment ID: 1.1 <br /> Grassed Waterway Kv =15 L =145' s =.02 '/' V =2.12 fps <br /> CIRCULAR CHANNEL Segment ID: 3.4 <br /> 18" Diameter a =1.77 sq -ft Pw=4.7' r =.375' <br /> s =.005 '/' n =.013 V =4.2 fps L =850' Capacity =7.4 cfs <br /> Total Length= 1080 ft Total Tc= 20.1 <br />