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<br />I <br />I <br /> <br />I <br />I <br /> <br />between the derived virgin flows at gaging stations and <br /> <br /> <br />either precipitation or mean elevation of the drainage <br /> <br /> <br />basins will be used to estimate the virgin flows for ungaged <br />tributaries. The estimated virgin flows will be used in <br />Task 7 to simulate the baseline condition and possible <br />future conditions. <br /> <br />I <br />I <br />I. <br />I <br />I <br /> <br />METHODOLOGY: <br /> <br />I <br />I <br /> <br />1. Select stream gage records compiled in Task 1 having <br /> <br />adequate length of record and/or records with minimum <br />\ <br />upstream effects ("bell-weather" stations). Perform <br /> <br />statistical evaluation of the streamflows to confirm or <br /> <br />re-define the proposed 30-year study period. Obtain <br />CWCB approval of the adopted 30-year study period. <br /> <br />I <br /> <br />I <br /> <br />2. Utilizing the water rights information compiled in Task <br />1, identify existing ditches, other pertinent <br />_conveyance facilities and reservoirs operating in the <br /> <br />study area. <br /> <br />1\ <br /> <br />I <br />I <br /> <br />3. Prepare base map of study area by photo reduction of <br /> <br />USGS 1: 50,000 scale county series topographic maps to <br />a scale of 1 inch = 1 mile. Locate study area <br /> <br />boundaries, stream gaging stations, irrigation ditches, <br /> <br />reservoirs and other pertinent hydrologic features. <br /> <br />It <br /> <br />Il <br />JI <br /> <br />A-16 <br />