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<br />001068 <br /> <br />Final Environmental Assessment-Chapter 2-Alternatives <br /> <br />Operation, Maintenance and Replacement Measures <br /> <br />The downstream rock passage would require no regularly scheduled actions related to <br />operation and maintenance, other than inspection. Reclamation would enter into a <br />contract with Palisade and Mesa County Irrigation Districts to provide inspection and <br />maintenance as needed. Temporary maintenance access for maintenance and repairs <br />would be requested from the Union Pacific Railroad and E.R. Jacobson on an as-needed <br />basis. <br /> <br />Water Supply for Fish Passage <br /> <br />Because of downstream senior water rights, a flow of at least 520 cfs is present in this <br />reach of the river under all but the most severe drought conditions. The Service also has <br />up to 37,650 acre-feet of storage water available from upstream reservoirs for endangered <br />fish uses in drought years. About 80 cfs of Colorado River flow would be needed to <br />operate the fish ladder. The fish passage notch would be designed to direct the first 80 <br />cfs in the river to the fish passage channel. Additional flows would begin to spill over the <br />rest ofthe dam at higher flows until the dam is completely submerged. Ifbuilt, the <br />Service would require the Jacobson Hydro No.1 Project to discharge near the fish <br />passage entrance to serve as an attraction flow using pipe across the river, or defuse the <br />discharge at various locations. Without the Jacobson Hydro No. 1 Project, flows over the <br />rock ramp would be directed towards the fish passage entrance to attract fish. Attraction <br />flows would vary, dependant on flows in the river. <br /> <br />Downstream Rock Fish Passage <br />With Whitewater Recreation Features <br /> <br />This alternative was developed through various meetings with representatives of the <br />Western Association to Enjoy Rivers (WATER), CDOT and the Town of Palisade. The <br />alternative requires that the following conditions be met before construction could <br />proceed. These conditions include: 1) a local governmental entity securing non-recovery <br />program funding for the incremental costs associated with construction of the <br />Downstream Rock Fish Passage with Whitewater Features Alternative, 2) obtaining <br />necessary permits from underlying land owners (Palisade and Mesa County Irrigation <br />Districts, E.R. Jacobson, and CDOT), 3) the Town of Palisade sponsoring and assume <br />liability and maintenance responsibility for the whitewater features, and 4) the Town of <br />Palisade obtaining public access below the dam from the Union Pacific Railroad and E.R. <br />Jacobson. The alternative would incorporate whitewater features into the Downstream <br />Rock Fish Passage Alternative. The Town of Palisade submitted an application to Great <br />Outdoors Colorado for additional funding to construct the whitewater features concurrent <br />with construction of the fish passage. CDOT has conditioned its approval of this <br />alternative, subject to the Town of Palisade acquiring the public access easements below <br />the dam prior to approving construction of the whitewater features and Federal Highways <br />Administration approval. Under this alternative, if any of the conditions identified above <br /> <br />I <br /> <br />" <br /> <br />15 <br />