Laserfiche WebLink
i� <br />The work will be performed by rehabilitation and /or reconstruction downstream of the existing <br />' embankments. The Dams will generally be rehabilitated as discussed for Option A -2, including <br />raising of all dam embankments. <br />A new dam will be constructed north of the existing Dam 4. Dam:S =will be approximately <br />3,000 feet long, and will straddle the proposed spillway site._. Fig. 5 shows a typical section <br />of new Dam 5. <br />In addition to the work described above, the rehabilitation will- require work on the outlet works <br />including extension of the conduits, raising of outlet towerand catwalks. The spillway crest <br />will be raised and lined with soil cement, and the inlet canal shortened by 1,900 feet. <br />Approximately 3.2 miles of County Line Road will rhaue to relocatedand a new bridge will be <br />constructed. <br />8.4 Alternative C <br />Under this alternative, the normal water level in the reservoir will be raised 6.5 feet to Gage <br />30.5 (El 3713.5). Construction of new dams downstream of existing dams and increasing the <br />storage level will provide significant additional`: storage. This alternative will result in additional <br />storage between 10,100 to:' 21;=900 acre -feet as is discussed in the options below. <br />The outlet tower will be raised by constructing a new platform on top of the existing one, <br />relocating the gate operators;= extend in the gate shafts, and raising the catwalk supports and <br />extending the catwalk to the relocated dam crest. The outlet conduit will be extended, and <br />a new terminal structure constructed. A soil /cement spillway control section will be <br />constructed in the nattrral ground in the center line of the new Dam 5. The inlet canal will be <br />shortened by 6,400" feet. <br />Option C -1: Under this option, the existing dam embankments will be raised 6.5 feet <br />by rehabilitation and /or reconstruction. This will result in additional storage of 10,100 <br />acre -feet. The raise will be generally downstream and will require foundation treatment <br />Areports\9 7-1 -500.nk <br />