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S � � � �� County roads impacted by the reservoir enlargement construction are being raised above the new reservoir pool and improved to current standazds. Mitigation for Non-Native Game Fishes Elkhead Reservoir currently has a significant population of non-native games fishes including black crappie and northern pike stocked by the CDOW, and sma11 mouth bass which were not stocked by the CDOW. CDOW is developing a lake management plan which includes these three non-native game fish. These tliree non-native game fish have been identified as problematic to the recovery of the listed Colorado River fishes found in the Yampa River. The Recovery Program currently salvages small mouth bass from the Yampa River and moves them to Elkhead Reservoir. To preserve the non-native game fish in the reservoir the enlargement is being constructed with a game fish mitigation pool behind the dam rather than being drained. Construction of the � enlargement with a game fish mitigation pool in place is considerably more complex and costly than draining the reservoir. To construct the enlargement with the game fish mitigation pool in place requires the new outlet works be tunneled into a pit excavated in the rock adjacent to the game fish mitigation pool. The new outlet works will be connected to the enlarged reservoir by removing the outlet works pit coffer dam after the outlet works is complete. Additionally, all construction related water discharges from the reservoir must be screened to contain the game fish residing in the game fish mitigation pool. The difference in cost between drainiang the reservoir for construction and mai,ntaining the game fish mitigation pool during construction is = inc�uded � fi�i-s grsn� ap�licafion: _ -': _._� , The Sta.te of Colorado has adopted a non-native fish stocking policy which requires containment of non-native fishes in waters such as Elkhead Reservoir. The Recovery Program biology committee has evaluated the potential for non-native fishes to escape from Elkhead Reservoir and cause detrimental effects to the listed fishes in the Yampa River. The Recovery Program's ad.opted strategy for containing non-native fish in the enlarged Elkhead. Reservoir has been included in the design and construction�of the reservoir enlargement. This strategy has been reviewed and approved by the U.S. Army Corps of Engineers, the U.S. Fish and Wildlife Service, and the Recovery Program. The permanent fish containment facilities are not a part of this mitigation grant application. The non-native game fish containment strategy consists of Consfixct the reservoir enlargement with a game fish mitigation pool in place. Temporary screening of the existing outlet works, siphons and pumps to lower the reservoir level for construction to 1 /4" openings.