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. ~-~ <br />HiIIsSECU Type 1124-hr Rainfal - . 8" <br />Prepared by Titan Atlantic ~ Page 2 <br />HydroCAD®6 00 s/n 002026 ®1986-2001 Applied Microcomputer Systems 3117/2003 <br />Subcatchment 1 S: New Land Pre-Developed <br />Runoff - 4.38 cfs @ 12.14 hrs, Volume= 0.338 of <br />Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs <br />Type It 24-hr Rainfall=5.38" <br />_ Area (sf) CN Description - <br />8,725 98 impervious <br />J7,J YZ.-T'1---j.rci r~~u~ <br />60,267 77 Weighted Average <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) ~ - <br />19.5 200 0.0315 0.2 Sheet Flow, - ~ • <br /> Grass: Dense n= 0.240 P2= 3.60" <br />0.8 150 0.0413 3.3 Shallow Concentrated Flow, <br /> Unpaved Kv= 16.1 fps <br />0.2 50 0.0550 4.8 Shallow Goncentrated Flow, <br /> Paved Kv= 20.3 fps <br />0.8 90 0.0678 1.8 Shallow Concentrated Flow, <br /> Short Grass Pasture Kv= 7.0 fps <br />21.3 490 Total <br />Subcatchment 1 S: New Land Pre-Developed <br />Hydrograph Plot <br />w <br />0 <br />1 ,_ ,. .. <br />. r ..i.. <br />cfs. ~~ <br />r <br />.... <br />. _r... __,._ <br />~ r r .. .~.....T .... .. ~ .. ... ;.. . <br />r .. ' ...` <br />• • i ~l,.. ~.,. ••.,.. ..r.... r- -~ <br />0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 <br />Time (hours) <br />- Runoff <br />