Laserfiche WebLink
<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 />c. High hazard applies to structures where failure will likely <br />result in loss of life. <br /> <br />3. Hazard Rating of Fuchs Dam <br /> <br />Both the State Engineer's Office and the U.S. Forest Service have <br />previously classed Fuchs Dam as a moderate to high hazard structure. <br />In addition, both the State Engineer's Office and U.S. Forest Service <br />have approved a low hazard classification of the structure for <br />spillway design flow purposes and, therefore, the 10D-year inflow <br />design flood is acceptable for spillway design capacity. (See letters <br />from U.S. Forest Service, dated December II, 19B1, and State <br />Engineer's Office, dated June 3, 1982, in Appendix C and Reference 7). <br /> <br />C. Inflow Design Floods (IDF) <br /> <br />The approach used in this hydrologic study to determine the <br />spillway design flood is based upon the S.C.S. Runoff Curve Number <br />(RCN) procedure, as outlined in "Design of Small Dams" (Reference 1). <br />The spillway design flood determined herein is based upon the <br />acceptance by the State Engineer's Office and the U.S. Forest Service, <br />of the low hazard rat i ng for spillway des i gn pu rposes. The data and <br />procedures used to generate the design flood hydrographs, the 100-year <br />inflow design flood based upon 6-hour or 18-hour general rainstorms, a <br />I-hour thunderstorm or the 6-hour general rainstorm for the freebroad <br />hydrograph, are defined in this section. <br /> <br />- V-4 - <br />