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<br />,) <br /> <br />HELTON & WILUAMSEN, P.C. <br />CONSULTING ENGINEERS IN WATER RESOURCES <br />384 INVERNESS PARKWAY, SUITE 144 <br />ENGLEWOOD, COLORADO 80112-5822 <br />PHONE (303) 792-2161 <br />FAX (303) 792-2165 <br /> <br />June 23, 2004 <br /> <br />M E M 0, RAN DUM <br /> <br />TO: Karen Shirley - Manager, Upper Gunnison River Water Conservancy District <br />FROM: Jim Slattery <br />SUBJECT: Upper Gunnison Project - Agricultural Acreage in the Upper Gunnison Basin <br /> <br />As you requested, I prepared this memorandum to summarize the irrigated acreage in the <br />Upper Gunnison Basin. The irrigated acreage is summarized from the information contained in <br />the Colorado Decision Support System (COSS) and described in the report prepared by Helton <br />& Williamsen, P.C. entitled "Subordination of the Wayne N. Aspinall Unit Water Rights within the <br />Upper Gunnison Basin, 2002 Annual Report", dated December 22, 2003 (2002 Subordination <br />Report). <br /> <br />-J <br /> <br />The CDSS 2000 irrigated acreage GIS coverage (OWR HYDROBASE design version <br />20030701) was utilized in the 2002 Subordination. The irrigated acreage in the 2002 <br />Subordination report is summarized by water district in the following table <br /> <br />Water District Irrigated Acres <br />28 27.889 <br />40 645 <br />59 32,421 <br />62 16, 174 <br />T alai 77 r 129 <br /> <br />Please note that the irrigated acreage in the above table is only the irrigated acreage for the <br />portion of the water district that is covered by the Subordination Report. This area would <br />correspond to the drainage basin upstream of Crystal Dam. All of water Districts 28 and 59 are <br />located upstream of Crystal Dam but only a portion of water district 40 and 62 fait within the <br />subordination area. The irrigated acreage is assigned to a water district based on the location <br />of the headgate where the water is diverted to irrigate the land. <br /> <br />The following table summarizes the irrigated acres by County. Again only the irrigated acres <br />for the portion of the County that is located in the area covered by the 2002 Subordination <br />Report is included. <br /> <br />Water District Irrigated Acres <br />Gunnison 60, 143 <br />Hinsdale 1 ,916 <br />Montrose 1 J 783 <br />Saguache 13,286 <br />Total nJ 129 <br />