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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />CHAPTER II <br /> <br />STUDY OBJECTIVE <br /> <br />A. BACKGROUND INFORMATION <br /> <br />The watershed which supplies raw water for the Town of Palisade is located in <br />Mesa County, about 5 miles south and east of Palisade (Figure II-I). It is situated on <br />the northwest slopes of Grand Mesa within the upper drainage basins of Rapid Creek and <br />Cottonwood Creek. The watershed is located at an elevation between 7,000 and 10,000 <br />feet, and is recharged primarily by snowmelt. In order to collect water within the <br />watershed, the Town has developed an extensive system of spring collection boxes, <br />surface diversion structures, storage reservoirs and pipelines. <br /> <br />There are two major pipelines which are used to convey water collected in the <br />watershed to the Town water plant. The pipeline located on Cottonwood Creek (which is <br />a tributary to Rapid Creek) is 4.3 miles long; the other on Rapid Creek is about 3.6 <br />miles long. The two pipelines join together where the two streams converge. At this <br />point, water is carried in a new 12 inch pipeline approximately 5300 feet to the water <br />plant. <br /> <br />Of the two pipelines, the Cottonwood Creek pipeline could be considered the most <br />important. It is the only pipeline which can carry water from Kruzen Springs, which <br />provides the most reliable supply and highest quality water in the Palisade system. It <br />also ties in directly both to the Cabin Reservoir outlet and to the bypass line around <br />Cabin Reservoir (which collects water from the upper Rapid Creek Basin). The <br />Cottonwood Creek pipeline was installed approximately 50 years ago. The pipeline is <br />primarily cast iron with lead joint pipes, and is a combination of 8 inch and 6 inch pipe. <br />From April to June, 1994, the Town experienced 5 water breaks on the Cottonwood <br />Creek line. In its present condition, the Cottonwood Creek pipeline is not reliable and <br />jeopardizes full use of the Town's water rights. It also does not have adequate capacity <br />to provide future peak demands. The Town also supplies water on an intermittent basis <br />to the Ute Water treatment plant; the pipeline is definitely undersized for that purpose. <br /> <br />B. STUDY OBJECTIVE <br /> <br />The purpose of this study is to evaluate and select the most cost-effective and <br />feasible method to conveyor otherwise utilize the raw water in the Cottonwood Creek <br />drainage. The proposed system must be able to provide a continuous supply of water for <br />the Town of Palisade and occasional water deliveries for the Ute Water treatment system. <br /> <br />Alternatives which will be considered for evaluation are as follows: <br /> <br />~ <br /> <br />~ <br /> <br />II-I <br />