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03/05/2006 10:28 FAX 3036628757 <br />GN;1 CUNSUL'1 A1V'1'S 1NG <br />B. NeN Updated Hydrology for Phase I Analysis <br />~~~; <br />• Drainage Area 5.54 sq.mi. 3546 acres{1) <br />V <br />Length of Watercourse 4.01 mi.; Rise of Watershed 1394 <br />Tc'/Tc 1.3 Tc' = 1.05 hrs. <br />Hazard high Size Class (C of E) Intermediate; SDF (C of E) _ <br />Soil Group ,,?;~ ~ -"~7 n.•7* ~~'`?. 'f . fi 1 . <br />_ rl..~- ~ <br />~.'/y. r /.y i/S <br />Rainfall/Runoff Data <br />B. PMGS C. PM75 <br /> <br />SC5 Curve Number (CN) <br />Rainfall (Small Dams) <br />Rainfall (Other)-(3) <br />Infiltration Rate <br />Inches/Hour <br />Peak Fiow into <br />Reservoir, Qpl <br />Routed Outflow from <br />Reservoir, Qp2 <br />73 (AMC III) 70 <br />I~JUUI <br />Y ~ ""' <br />ft. ~~.? ~ <br />/~~74 <br />3.0 7.D1 <br />4.6 4.60 <br />- 0.17 0.18 <br />cfs 2340 cfs 10,493 cfs <br />cfs overtops dam cfs overt~ops dam cfs <br />The above data is based upon the procedure in the U.S.B.R.'s D s~ n of Small <br />Dams, second edition, and Hydromet Report iF49 (~ <br />PMP or PMGS -- The distribution of rainfall for first phase is in accordance <br />with Figure 18, Zone B The depth-area-duration relationship is in <br />accordance with Figure 16, Zone N/A The arrangement of the rainfall is <br />in accordance with Item 3(c), Paged <br />PMTS -- The storm is distributed in accordance with Table 2, Page 52, Zone <br />II The design thunderstorm precipitation 15-minute time sequence is in <br />accordance with Table A-8, Appendix A, Zone II The area adjustment is <br />made using Figure 21. <br />(I) Includes reservoir area at high water line. __- <br />(2) PMP =Probable Maximum Precipitation; PMGS = Probable Maximum General <br />Storm Precipitation; PMTS = Probable Maximum Thunderstorm Precipitation (1 hr. ). <br />• 2 oft <br />(2) A. PMP <br />