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3 • <br />• <br />i - <br />DESIGN VOLUME - -- <br /> <br /> STORM FREGIJENCI' 10 (YEARS) <br /> STORM DURATION 24 (HOURS) <br /> SLOPE FACTDR 1 <br /> _ <br />GRADE C STEEP _ <br />• WATERSHED WEIGHTED RCN 89 <br /> 24 _HOUR RAINFALL __ 2.9 (INCHES) <br /> DETENTION TIME 24 (HOURS) <br />. ##~ SEE ATTACHED RAINFALL SHEETS <br /> RAINFALL RUNOFF DEPTH_ _ 1_81 (INCHES) _ <br /> RUNOFF VOLUME 5.8825 (AC/FT) <br /> ADJUSTED RUNOFF VOLUME 5.8825 <br /> DESIGN VOLUME 8.1625 <br /> <br /> <br />• <br /> STAGE STORAC,E COMPUTATIONS <br />- - - <br /> ECECr - ~S11EA INTERVAL <br /> FEET SGR FT ACRE ACRE FEET ACRE FEET ACRE FEET <br /> <br /> 6880 54000 1.23966942 <br /> GG85 60750 1.3946281 1.3171487E 5 6.58574381 6.58574381 <br /> GG90 67500 1.54958678 1.472107.44 5 7.36053719 13.946281 <br /> <br /> ST <br />ORM FREQUENCY FOR PEAK DISCHARGE 25 <br /> _ <br />_ <br />EGUIV ALENT DISCHARGE 153.86 <br /> PEAK DISCHARGE 15:3.86 <br /> <br /> <br /> <br /> <br />