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<br />I <br />I <br />I <br /> <br />I <br />I <br /> <br />I <br /> <br />study revised the hydrology considerably from the previous <br />studies and proposed a lOO-year developed flow that was similar <br />to the COE 1976 Studies. The study increased the peak flows by <br />utilizIng a I-hour design storm and greatly reduced time of <br />concentrations for the subbasins. As a result of this plan, <br />three stormwater detention facilIties were proposed on the WG <br />channel. <br /> <br />rn June of 1986, the E'Jttntaln Valley Ranch Final Drainage <br />report by RBD (Reference 29) revised the hydrology to reflect <br />the final designs for the culverts and the detention Pond 5. <br />This resulted in very little change in the basin peaks as shown <br />in Tabl,. 12.1. <br /> <br />TABLE 12. 1 .~ SUMMARY OF liG PEt,K nrSCIIARGES FROM PREVIOUS STUDrES <br /> <br />I <br />I <br /> <br />REPORT <br />AND DATE <br /> <br />FIS <br />1976 <br /> <br />I <br /> <br />Finn & Assoc. <br />1984 <br /> <br />I <br /> <br />LanSer <br />1984 <br /> <br />I <br /> <br />I <br /> <br />RBD <br />1985 <br /> <br />I <br /> <br />SLA <br />1985 <br /> <br />I <br /> <br />I <br /> <br />SLA <br />1986 <br /> <br />I <br /> <br />RBD <br />1986 <br /> <br />I <br />I <br /> <br />I <br /> <br />LOCATION <br /> <br />Mouth <br /> <br />Canal #4 <br />Mouth <br />Canal #4 <br />Mouth <br /> <br />Canal #4 <br />Mouth <br />Canal #4 <br />Mouth <br /> <br />Canal #1, <br />Mouth <br />Canal #4 <br />Mouth <br /> <br />Canal #4 <br />Mouth <br />Canal #4 <br />Mouth <br /> <br />Canal #1, <br />Mouth <br />Canal #4 <br />Mouth <br /> <br />Canal #4 <br />Mouth <br />Canat #4 <br />Mouth <br /> <br />STORM <br />CONDITIONS <br /> <br />3-hr TP-40 <br /> <br />24-hr Ty. IIA <br />24-hr Ty. IIA <br />24-hr Ty.IIA <br />24-hr Ty. IrA <br /> <br />24-hr Ty. IIA <br />24-hr Ty.IIA <br />24-hr Ty. IIA <br />2l,-hr Ty.IIA <br /> <br />21,-hr Ty.IIA <br />24 - hr Ty. IIA <br />24-hr Ty.IIA <br />2l,-hr Ty.IIA <br /> <br />1 hr <br />1 hr <br />1 hr <br />1 hr <br /> <br />CUHP <br />CUIIP <br />CUIIP <br />CUHP <br /> <br />1 hr <br />1 hr <br />1 hr <br />1 hr <br /> <br />ClllIP <br />CUHP <br />CUIIP <br />CUIIP <br /> <br />1 hr <br />1 hr <br />1 hr <br />1 hr <br /> <br />CUIIP <br />CUHP <br />CUIIP <br />CllHP <br /> <br />DEVELOPMENT <br />CONDITIONS <br /> <br />Existing <br /> <br />Existing <br />Existing <br />Full Dev. <br />Full Dev. <br /> <br />Existing <br />Existing <br />Full Dev. <br />Full Dev. <br /> <br />Existing <br />Existing <br />Full Dev. <br />Full Dev. <br /> <br />Existing <br />Existing <br />Full Dev. <br />Full Dev. <br /> <br />Full Dev. <br />Full Dev. <br />Full Dev. <br />Full Dev. <br /> <br />Full <br />Full <br />Full <br />Full <br /> <br />Dev. <br />Dev. <br />Dev. <br />Dev. <br /> <br />53 <br /> <br />DRAINAGE <br />AREA <br />(SO.MI. ) <br /> <br />4.5 <br /> <br />1. 37 <br />2.57 <br />1.41 <br />3.11 <br /> <br />3.34 <br />2.57 <br />1.41 <br />3.11 <br /> <br />3.34 <br />4.82 <br />3.34 <br />4.82 <br /> <br />3.21 <br />5.52 <br />3.21 <br />5.52 <br /> <br />3.13 <br />5.43 <br />3.34 <br />5.43 <br /> <br />3.13 <br />5.43 <br />3.34 <br />5.43 <br /> <br />PEAK FLOWS <br />(cfs) <br />ill 100YR REMARKS <br /> <br />67 <br />101 <br />363 <br />839 <br /> <br />71 <br />172 <br />292 <br />779 <br /> <br />71 <br />172 <br />292 <br />779 <br /> <br />5000 1300jlOyr <br /> <br />421 <br />698 <br />1198 <br />2555 <br /> <br />405 <br />761, <br />901 <br />2135 <br /> <br />405 <br />764 <br />901 wjo Det. <br />2135 wjo Det. <br /> <br />720 <br />1575 <br />1045 wjo Det. <br />2440 wjo Det. <br /> <br /> <br />2350 wjo Det. <br />4830 wjo Det. <br />1096 wj Det. <br />1103 wj Det. <br /> <br />2348 wjo Det. <br />4857 wjo Det. <br />1095 wj Det. <br />1095 wi Det. <br /> <br />R€~OURC€ CON~UlTI\NT~ INC <br />