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Last modified
8/16/2009 2:35:08 PM
Creation date
10/15/2008 4:30:13 PM
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Board Meetings
Board Meeting Date
7/22/2008
Description
ISF Section - Lower San Miguel Water Resources Planning Study
Board Meetings - Doc Type
Memo
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Lower San Miguel yVa~er Resource Planning Study <br />Page 10 <br />The Authority holds title for no water rights of its own, as the Towns both leased portions of <br />their respective water rights to the Authority. <br />As indicated in the Buckhorn Geotech feasibility study, Nucla holds 100 shares of the Highline <br />Canal or approximately 3.12 cfs, if the Canal is flowing at full capacity. Nucla also has rights <br />equaling 2.66 cfs from the San Miguel River at the Nucla pumps. The Highline Canal rights <br />equal about 420 million gallons (1,289 AF) a year and the 2.66 cfs for one month equals about <br />51.5 million gallons (15 8 AF) per year. <br />Nucla transferred 50 shares of the Highline Canal, or 1.56 cfs for 7 months (650 AF), as <br />indicated in the September 11, 2002 lease. Nucla also leased the 2.66 cfs water right from the <br />San Miguel River, which is only available for approximately one month each year. The Highline <br />Canal shares are used for municipal and irrigation needs. <br />Also as indicated in the Buckhorn Geotech feasibility study, Naturita held water rights equaling <br />approximately 2.39 cfs in the Reed Chatfield Ditch for municipal purposes and 4.0 cfs for <br />irrigation purposes. In 1996, Naturita transferred some of the rights to other entities and retained <br />1.79 cfs for municipal purposes and 4.0 cfs for irrigation purposes. The municipal water rights <br />equal 242 million gallons (745 AF) per year and the irrigation rights total 540 million gallons <br />(1,657 AF) per year. <br />Naturita leased 0.3 3 3 cfs (13 7 AF) of its Reed Chatfield Ditch right to the Authority, as indicated <br />in the December 31, 2002 lease. Naturita also transferred an additional 0.168 cfs (70 AF). These <br />rights are generally available for 7 months per year and were moved upstream to the Nucla <br />pumps. Due to pumping costs, these rights are not used as often as the Highline Canal rights, but <br />do provide a winter supply when the Highline Canal is not operating, or an emergency supply to <br />fill the reservoir if the Canal is operating at full capacity. <br />The total water rights already leased to the Authority, as described above, total 332 million <br />gallons (1,015 AF) per year. The feasibility study shows water diverted for both towns for the <br />year 1999. Nucla diverted a total of 94.8 million gallons (291 AF) and Naturita diverted a total of <br />61.2 million gallons (188 AF). The feasibility study used a 2.5% growth trend and reflected a 50 <br />year municipal and irrigation demand for both towns of 548.3 million gallons (1,682 AF) per <br />year. As growth occurs and the demand reaches the projected 1,682 AF per year, the Towns will <br />need to lease additional water rights to the Authority. <br />Although the Towns, together, hold enough water rights to supply the projected 50 year demand, <br />Montrose County, as well as the Towns, feels the 50 year projected demand does not adequately <br />consider the possible growth that could accompany the expected energy development. As <br />previously stated in this report, Montrose County is currently conducting a study to quantify the <br />population growth associated with the possible energy development. In addition, the Colorado <br />Water Conservation Board, Statewide Water Supply Initiative Report (SWSI Report) indicates <br />Montrose County has a Gross Gap of 135 AF in unincorporated areas not covered by a water <br />system. <br />~Iuly 2008 <br />
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