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0 <br /> GRAPHICAL PEAK DISCHARGE METHOD Version 2 .00 <br /> Project : BURKE TRUCK User: BJH Date: 09-15-99 <br /> County : DANE State: WI Checked: Date: <br /> ° Subtitle: RUNOFF TO EXISTING RETENTION AREA <br /> Data: Drainage Area 2 . 1 * Acres <br /> Runoff Curve Number 68 * <br /> Time of Concentration: 0 .25 * Hours <br /> Rainfall Type II <br /> 0 Pond and Swamp Area NONE <br /> Storm Number 1 2 3 4 5 6 <br /> ar <br /> Frequency (yrs) 2 5 10 25 50 100 <br /> 24-Hr Rainfall (in) 2 .8 3 .7 4 . 1 4 . 7 5 .2 6 . 1 <br /> Ia/P Ratio 0 .34 0 .25 0 .23 0 .20 0 .18 0 .15 <br /> m <br /> Runoff (in) 0 .53 1 .02 1 .27 1 . 67 2 . 02 2 .70 <br /> Unit Peak Discharge 0 .919 1 .018 1 .038 1 . 062 1 .077 1 .099 <br /> (cfs/acre/in) <br /> Pond and Swamp Factor 1 . 00 1 . 00 1 .00 1.00 1.00 1 .00 <br /> a <br /> 0 .0% Ponds Used <br /> Peak Discharge (cfs) 1 2 3 4 5 6 <br /> * - Value (s) provided from TR-55 system routines <br /> 0 - - <br /> 4 <br />