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I. I I I I I I I I I I I I I I I I I I 002595 Plan of Study 28 TASK 4 HYDROLOGY AND WATER RIGHTS Overview The objectives of this task are to develop methods for estimating virgin or baseline inflows at various reservoir sites in the basin and to establish an approach to modeling water rights administration in the basin. The hydrologic, water rights and operations analyses will be based on the USFWS HYDROSS studies. Wherever possible, the effects of existing projects and water rights will be left in the baseline flow data set under the assumption that they will be operated in the future as they have in the past. Effects of existing projects and water rights that may be specifically operated in this study will be removed; this will define a new, or Modified Environmental Baseline data set. The water demand analysis will note the water requirements which will be satisfied by these projects and rights. An analysis of the Juniper-Cross Mountain water rights is included in this task. Special attention is given to identifying existing subordinations, evaluating the potential for their transfer to other uses and evaluating their potential utility for protection of instream flows. This task is divided into six sub-tasks: Sub-task 4a: Define Water Rights and Modeling Approach Sub-task 4b: Review USFWS Hydrologic Model Sub-task 4c: Develop Site-specific Hydrology as Needed Sub-task 4d: Develop Hydrologic Data Set Sub-task4e: Discuss Water Rights Transfer Issues Sub-task 4f: Develop Basin Model Sub-task 4g: Calibrate Basin Model Task Leader: Mr. Benjamin L. Harding Key Technical Support: Mr. Edward Armbruster will assist Mr. Harding with the modeling and hydrologic analyses required for this task. Ms. Elizabeth Payton will provide technical assistance and quality assurance for model development.