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<br />... background of conventional water needs. In achieving this purpose, <br />attention was directed toward a number of objectives, of which one was <br />the assessment of impacts of diversion of instream flow for coal and oil <br /> <br />t--4 <br />-..:I <br />....' <br />to <br /> <br />shale technology development upon stream fisheries and stream-oriented <br /> <br /> <br />recreational activities. For accomplishing this objective, the recon- <br /> <br /> <br />nai ssance methodology mentioned in B.2. was employed by the CIFSG to <br /> <br /> <br />identify the initial impacts (short-term changes) on different life <br /> <br /> <br />stages of target fish species and potentials for recreation use. The <br /> <br /> <br />results were included in the report of the Colorado Department of Natural <br /> <br /> <br />Resources titled ~ Colorado River Region Section ~ Assessment, <br /> <br />(2) 7JJe a.flxlnt/ <br />May 1979 . ~ report'l di scusses in detail the procedures used, the <br /> <br /> <br />problems encountered, and the findings and conclusions. <br /> <br />. II. OUTLINE OF THE METHODOLOGY <br /> <br />. <br /> <br />Component concepts and procedures making up the methodology are as follows: <br /> <br />A. Riverine Analysis Areas (RAA's) <br /> <br />Riverine Analysis Areas constitute a series of subsets representative of <br /> <br />particular riverine habitat types (3) <br /> <br />Defi ni ng geographic regi ons in <br /> <br />terms of the interrelated hydrologic, terrainal, and temperature compo- <br /> <br /> <br />nents that characterize each region and distinguish it from other regions <br /> <br /> <br />similarly defined provides the basis for identifying the boundaries and <br /> <br /> <br />characteri st i cs of RAA 's. The set of RAA' s fi na lly estab 1 i shed for the <br /> <br />conterminous United States was the result of an extended evolutionary <br /> <br />process (3). These RAA's are displayed in figure 2. <br /> <br />7 <br />