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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />The 100-year inflow design floods were routed through the reser- <br /> <br />voir and spillways using the routing data included in Table A-4, in <br /> <br />Appendix A, for the service and emergency spillways of Alternative <br /> <br />No.1, and an initial water surface elevation at the crest of the <br /> <br />service spillway. The following Table 3 presents the results of the <br /> <br />reservoir routings. <br /> <br />TABLE 3 <br /> <br />Reservoir Routings of IDF's for Spillway <br />Alternative No. 1 <br /> <br />Flow, cfs Spillway Depths, ft <br />Inflow Outflow Service Emergency <br /> <br />Freeboard <br />(ft) <br /> <br />1. 1 DO-yea r <br /> 6-hour 542 24B 2.2 0 2.0 <br />2. 100-yea r <br /> 1B-hour 997 560 3.6 O.B 0.60 <br />3. 100-year <br /> 18-hour * 997 540 4.0 1.2 0.20 <br />4. Assumpt i on B <br /> Thunderstorm 662 326 2.7 0 1.5 <br /> <br />* 50% of Service Spillway <br /> <br />2. Alternative No. 2 <br /> <br />This alternative consists of a closed conduit service spillway <br /> <br />located at the outlet works, as shown in plan on Figure II. Figure VI <br /> <br />shows this spillway alternative in profile. An emergency spillway is <br /> <br />also included with this alternative which is the same as with spillway <br /> <br />- VI-3 - <br />