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<br />/ <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />~ <br /> <br />STATE OF COLORADO <br /> <br />- <br /> <br />Colorado Water Conservation Board <br />Department of Natural Resources <br />721 Centennial Building <br />1 313 Sherman Street <br />Denver, Colorado 80203 <br />Phone: (3D3) 866,3441 <br />FAX: {303J 866,4474 <br /> <br />Roy Romer <br />Governor <br /> <br />MEMORANDUM <br /> <br />TO: <br /> <br />Colorado Water Conservation Board Members <br /> <br />J.lmes S. lochheOl.d <br />Exec.ltive Director, ONR <br /> <br />Oaries C. lile, P:E. <br />Director, eWeB <br /> <br />FROM: Randy Seaholm <br />Chief, Interstate Streams Investigation Section <br /> <br />DATE: May 1,1998 <br /> <br />SUBJECT: Agenda Item 26g.iv, May 11-12, 1998 Board Meeting- <br />Colorado River Basin Issues, Endangered Species Issues <br />Grand Valley Water Management - Status Report <br /> <br />Introduction <br /> <br />Grand Valley Water Management consists of improvements to the Grand Valley <br />Project located in the Grand Junction area. The improvements include the following: <br />. Seven new check structures on the Government Highline Canal to help regulate canal <br />flows, <br />. Modification of eight existing check structures, <br />. A new pump station at Highline Lake to help regulate flows on the ",,:est end of the <br />canal, <br />. A new canal spillway located near Palisade or the start of the canal, and <br />. Automated monitoring and operation of the improved canal system. <br /> <br />These improvements will result in a reduced diversion requirement of approximately <br />28,400 acre-feet during the months of August, September and October. Prior to the <br />improvements, it was necessary to operate the canal under full conditions in order to <br />assure water deliveries. The reduced canal diversions will result, at least in part, in <br />reduced water deliveries from Green Mountain Reservoir to the Grand Valley Project. <br />Subsequently, the surplus Green Mountain Reservoir water can be released in a manner <br />that contributes to improved flow conditions in the IS-Mile Reach. <br /> <br />There are several actions required prior to the initiation of construction of these <br />improvements. The current status of each of these actions is discussed below. <br /> <br />Grand Vallev Water Mana!!ement Draft Environmental Assessment <br /> <br />The U.S. Bureau of Reclamation released a Draft Environmental Assessment that <br />covers both the efficiency improvements to the Government Highline Canal and the <br />agreement to deliver surplus water from the "historic users pool" in Green Mountain <br />