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<br />.. <br /> <br />. , <br /> <br />Upper Colorado River Basin Study <br />Scope of Work <br /> <br />October 1; 1998 <br /> <br />inf9rmation and tools generated in the Study. The Study will be directed by a <br />Management Committee with input from an Advisory Committee. The Management <br />Committee is comprised of representatives of the governmental agencies financially <br />sponsoring the project. <br /> <br />2. Phase II Approach <br /> <br />Resolution of the issues listed above will require a clear understanding of the hydrology, <br />water quality and land uses of the basin from a watershed perspective, a knowledge of the <br />competing demands upon the basin's water resources, and the ability to examine the <br />hydrologic, water supply and water quality implications of various future scenarios. <br />Phase II will therefore include three major components, consistent with the Study budget <br />and schedule limitations: <br /> <br />. A water resources database for the Basin including existing flow hydrology, natural <br />flows (for some locations), existing and future levels of water demands, diversions <br />and stream flows for various scenarios, water quality data; and water rights. <br /> <br />. P ACSM hydrology for most of the locations listed in paragraph 4.1 below for the <br />scenarios identified in paragraph 4.7, and analytical tools to evaluate water supplies <br />available to in-basin users, resulting stream flows, reservoir levels and ambient water <br />quality at identified locations of interest. <br /> <br />. A map-based interface which allows the users to select among various water demand- <br />and project operation-based scenarios, and view the resulting hydrologic, water <br />supply and water quality implications at set locations. <br /> <br />3. Overall Assumptions <br /> <br />It is assumed that the Study participants will willingly provide available information and <br />will actively participate in the Study in various ways. It assumes that: <br /> <br />. Denver Water will provide output data and supporting explanations for. existing water <br />supply system operations, demands and modeling assumptions, and will develop at <br />least two new PACSM runs specific to this Study. This Scope of Work anticipates <br />relying on output data from Denver's P ACSM model as a major source of hydrologic <br />data for modeling scenarios. <br /> <br />. The Colorado River Water Conservation District will assist in defining historical and <br />expected future operations of Green Mountain and Muddy Creek Reservoirs. <br /> <br />2 <br />