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I I I I I I I I I I I I I I I I I I I The spillway for the dam is located adjacent to the right abutment and is only 40 feet in width. There is no riprap or other erosion control measures incorporated into the spillway. The drainage area for the reservoir is approximately 5 square miles. The deficiencies for the dam associated structures is as follows, 1. Inadequate spillway. 2. Deteriorated outlet conduit. 3. Seepage at the dam toe. 4. Inadequate freeboard on the saddle dam. The intent of the Company is to address the above deficiencies and rehabilitate the dam such that it meets current standards and requirements of the State Engineer. A more complete discussion of the dam, its associated structures, and recommended repairs is included in Appendix B of this report. ALTERNATIVES EVALUATED A range of alternatives were considered including 1) full rehabilitation of the dam, 2) partial rehabilitation including enlarging the spillway and repairing the outlet rather than replacement, and 3) rehabilitation that only addresses the spillway deficiency, Alternatives I and 2 address all the deficiencies noted above the only difference being the level of repair of the outlet works. Alternative 1 includes breaching the dam and replacing the outlet works, whereas, Alternative 2 is a repair of the outlet works, Both alternatives include raising the height of the saddle dam, installing a toe drain, and increasing the size of the spillway. The spillway would include a concrete cutoff wall and riprap to control erosion, Alternative 3 only addresses the spillway deficiency as this is the item the State Engineer has placed the Company on notice as requiring repair. This would include enlarging the spillway and providing a concrete cutoff wall and riprap to control erosion, Woods Lake Feasibility Page 4