OCR Text |
Show The minimum development represents a plan to serve only goal ( 2) above, serving all remaining Group 5 Indian lands. It is possible that as planning progresses a compromise plan somewhere between the two plans might be selected. Mitigation measures have not been developed yet but would be considered in future planning. ( 1) Maximum Development15^ ( a) Description The maximum development of the Ute Indian Unit would use all of Utah's remaining share of Colorado River water. Based on an average annual historical flow of 5,800,000 acre- feet ( 1931- 63 period), some 203,000 acre- feet presently remains uncommitted. As water now allocated to Kaiparowits Powerplant in the amount of 102,000 acre- feet would again be made available for other uses, starting with year 2010 and ending about year 2030, the available water would increase to 305,000 acre- feet. Of this amount, 235,000 acre- feet would be diverted from Uinta Basin streams for delivery to the Bonneville Basin. The Ute Indian Unit construction schedule would fulfill the Indian deferral agreement by providing for the irrigation of 19,840 acres of Indian full service land by year 2005. Tunnels of the Uintah Aqueduct would be constructed in stages as demands developed. Whiterocks Tunnel on the far end would be constructed as far into the future perhaps as year 2030. Design and location data for features of this Unit are not yet available in detail. However, a sketch map of the Unit showing major features is shown on Figure C- 23. Considerable engineering work has yet to be accomplished in the way of materials investigations, damsite drilling, and feasibility design. Tentative systems within the Unit are discussed below. 1. Flaming Gorge Aqueduct Flaming Gorge Aqueduct would consist of 28 miles of tunnel, 15 miles of siphon, and 44 miles of earth- lined canals. Capacity of the aqueduct would be 670 second- feet at its beginning reducing to 15 second- feet at its end. The first 22 miles of the aqueduct would be a tunnel from Flaming 424 |