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<br />~, <br /> <br />.' <br /> <br />8. Estirnate the theoretical consumptive use and irrigation demands for the <br />water rights operating in the system utilizing data from the 1981 and 1982 <br />USBR studies. Determine representative low, average and high years of ideal <br />irrigation, demands and assign to individual years in the study period based on <br />recorded precipitation in the'study area. <br /> <br />9. Make a field reconnaissance of the Surface Creek basin and meet with the <br />Division Engineer for Water Division 4, the District 40 Water Commissioner, <br />water rights owners, and other selected individuals to verify locations of <br />major water rights, general operating conditions of the water supply systems, <br />and other basic data compiled for the evaluations. <br /> <br />10. Identify in general terms the causes of shortages, including unavailability of <br />water, losses, waste, inadequate structures, ineffective management, and <br />other reasons. <br /> <br />11. Develop and describe measures which could be employed to eliminate or <br />reduce the shortages identified in Step 10 above. <br /> <br />12. Prepare a computer simulation model of the hydrologic river basin system <br />and operate for the 27 -year study period on a monthly basis for the historic <br />conditions; evaluate the simulation results with respect to the actual <br />condi tions and problems identified in Steps 7 and 10 above. <br /> <br />13. Modify the computer model and repeat the simulated operation to determine <br />the extent of water availability for the system at the theoretical levels of <br />demand estimated in Step 8 above and under the improved management <br />condi tions developed in Step 11 above. <br /> <br />PRODUCTS: <br /> <br />1. Base map of the Tongue Creek, Surface Creek, Alfalfa Run and Currant <br />Creek basins and water rights in the Surface Creek basin. <br /> <br />I <br /> <br />2. <br /> <br />Tabulation of water rights in the Surface Creek basin. <br /> <br />3. Tabulations of monthly streamflows at selected locations in the basin. <br /> <br />4. . Tabulations of historic diversions by major water rights in the system. <br /> <br />5. Identification of general management problems and other causes of short- <br />ages. <br /> <br />6. List of sets of measures to eliminate or reduce the causes of shortages. <br /> <br />7. Estimates of the additional water supplies potentially available by correction <br />of problems and improved management. <br /> <br />II-8 <br /> <br />Revised 9/23/1985 <br />