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<br />, <br /> <br />, <br /> <br />. <br /> <br />. <br /> <br />-, <br /> <br />> <br /> <br />Initial Water Supply and Water Quality Screening (Task 4) <br /> <br />Objective: <br /> <br />To perform a preliminary assessment of physical water supplies and associated <br />quality at up to 25 hatchery sites. The water supply screening criteria will be <br />used along with other hatchery criteria in identifying 8 sites to carry to the next <br />level of assess men t. <br /> <br />Methodology: <br /> <br />1. Based on directions from the CWCB and the understanding that water depletions <br />associated with endangered species fish hatchery would likely be substantially <br />less than 100 acre-feet per year, the focus of the water supply availability <br />screening will be on physical availability rather than a combination of physical <br />and legal water availability, Based on our general experience in water supply <br />planning and interviews with local water administrators and water users, surface <br />water and shallow groundwater sources in the vicinity of the hatchery sites <br />would be identified. Consideration of deep groundwater (non-tributary) sources <br />will not be made in this study. <br /> <br />2. Based on interviews with local water administrators and water users, prepare <br />preliminary estimates of: <br /> <br />annual physical water yields from sources identified in 1. in dry and <br />average hydrologic years. <br /> <br />of the monthly distribution of the estimated annual physical water yields <br />for dry and average hydrologic years. <br /> <br />water quality problems (or potential problems) associated with the <br />sources related to design criteria for the hatchery. <br /> <br />3. Based on interviews with local water administrators and users and our general <br />experience, prepare a brief description of factors at each site which may <br />influence water availability. Included would be a discussion of how fully <br />appropriated the water supplies are, major demands and critical reaches on the <br />river, and the availability of existing augmentation sources to offset depletions <br />(i.e. USBR reservoirs). <br /> <br />4. A water supply screening would be performed by comparing the estimated water <br />supply and water quality at each site with the hatchery requirements and <br />eliminating those sites where water supply is not adequate. The remainder of <br />the sites passing the "fatal flaw" analysis will be ranked on the basis of water <br />supply and water quality. <br /> <br />Work Products: <br /> <br />A narrative discussion of the results of a reconnaissance level investigation of physical <br />water supply availability and associated water quality at up to 25 potential hatchery <br />sites. The narrative will describe which of the sources did not pass the water supply <br />screening and will rank the remaining sources. <br /> <br />9 <br />