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<br />Task IIIa-2 <br /> <br />White River Basin Model Enhancement <br /> <br />Objective: The RTI modeling group under the State's guidance will enhance the White River <br />Basin Model to include the approximately 25 percent of current water use which was <br />left "in the gage" in the Phase II model. Additional diversions and storage Structures <br />will be aggregated to produce a manageable data set and to avoid significantly <br />degrading computational performance, The final model will be calibrated and <br />documented, The State is responsible for the completion of the tasks described below <br />with RTI's involvement at the specified level of effort, <br /> <br />Prerequisite: The Phase II White River Basin model is documented and calibrated with <br />approximately 75 percent of the current water use modeled and with irrigation <br />demands based on the 1993 GIS mapping in the calculated scenario. <br /> <br />Assumptions: - Study period of enhanced models will be 1975 through 1991. <br />Total irrigation consumptive use is defined as the consumptive use associated with the <br />inigated acreage estimates from the 1993 assessment, Structures and water rights not <br />tied to irrigated parcels will not be included in the models but will be documented as <br />being excluded, <br /> <br />Task Leader: Ray Bennett (State) <br />Principal RTI staff: RTI water resource engineer (Bill Owen)....RTIWR <br /> <br />Phase III. Scope of Services <br /> <br />A-8 <br /> <br />June 12, 1996 <br /> <br /> <br />1072 <br /> <br />