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<br />Data for CENTERVILLE PROP DRAINAGE 10-24-00 <br />TYPE II 24-HOUR RAINFALL= 5.90 IN <br />Prepared by James R.Hill, Inc. <br />HvdroCAD 5.11 000744 (c) 1986-1999 Applied Microcomputer Systems <br /> <br />Page 4 <br /> <br />26 Oct 00 <br /> <br />SUBCATCHMENT 150 <br />PEAK= 33.48 CFS @ 12.01 HRS, VOLUME= 2.14 AF <br />ACRES CN <br />.66 98 IMPERVIOUS <br />3.78 61 GRASS <br />3.33 88 WETLAND <br />.27 60 WOODS <br />8.04 75 <br /> <br />SCS TR-20 METHOD <br />TYPE II 24-HOUR <br />RAINFALL= 5.90 IN <br />SPAN= 0-40 HRS, dt=.l HRS <br /> <br />Method <br />CURVE NUMBER (LAG) METHOD <br />L=500' s=.0235 'j' <br /> <br />Comment <br />Segment ID: <br /> <br />Tc (min) <br />13.8 <br /> <br />SUBCATCHMENT 160 <br /> <br />PEAK= 3.04 CFS @ 11.88 HRS, VOLUME= <br /> <br />.14 AF <br /> <br />ACRES <br />.75 <br /> <br />CN <br />65 <br /> <br />OPEN MEADOW <br /> <br />SCS TR-20 METHOD <br />TYPE II 24-HOUR <br />RAINFALL= 5.90 IN <br />SPAN= 0-40 HRS, dt=.l HRS <br /> <br />Method <br />CURVE NUMBER (LAG) METHOD <br />L=50' s=.05 'j' <br /> <br />Comment <br />Segment ID: <br /> <br />Tc (min) <br />2.0 <br /> <br />SUB CATCHMENT 170 <br />PEAK= 3.22 CFS @ 12.23 HRS, VOLUME= .33 AF <br />ACRES CN <br />.14 98 IMPERVIOUS <br />.95 61 GRASS <br />.04 88 WETLAND <br />.56 65 WOODS <br />1. 69 66 <br /> <br />SCS TR-20 METHOD <br />TYPE II 24 - HOUR <br />RAINFALL= 5.90 IN <br />SPAN= 0-40 HRS, dt=.l HRS <br /> <br />Method <br />DIRECT ENTRY <br />TR-55 SHEET FLOW <br />Grass: Dense n=.24 <br /> <br />L=230' <br /> <br />Comment <br />ROOF TO <br />Segment <br />P2=2.7 in <br /> <br />GROUND <br />ID: <br />s=.021 <br /> <br />Tc (min) <br />2.0 <br />29.7 <br /> <br />'/ ' <br /> <br />Total Length= 230 ft <br /> <br />Total Tc= <br /> <br />31.7 <br />