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, . 2. STATE: Obtain the cumulative storage capacity of all stock ponds as derived from the Phase II consumptive use report. Prepare a one page memo describing the results. 3. STATE: From the CRDSS Phase II reservoir coverage map, identify locations for a maximum of three aggregated reservoir nodes 4. RTIWR: Modify the StateMod input file to include up to three aggregated reservoir nodes with two accounts per reservoir and locate these nodes within the Phase III model network, The operational account for each of the aggregated reservoir nodes would have a capacity estimated as one third of the cumulative net absolute storage decree for the basin. The non-operational account for each of the three aggregated reservoir nodes would have a capacity determined as one-third of the cumulative basin stock pond capacity in the basin, 5. RTIWR: Assign an area capacity curve for each of the aggregated rcsc!'\'oir nodes based on an existing reservoir in the basin of equal size or engineering judgment. Modify the StateMod input files to reflect area capacity infonnation, Assign the Phase II evaporation curve for the White River Basin to each of the aggregated reservoir nodes. Modify the StateMod input files to reflect evaporation information, 6. RTIWR: Develop an operational file to release water from the operational account in July, August, and September. The operational account would be released to the river: 25% during July, 50% during August, and 25% during September. The non-operational account would be depleted only by it pro. rata share of evaporation. 7. RTIWR: Estimate an end-of-month content file by assuming the aggregated reservoirs were ...... maintained at a constant 75 % of capacity throughout the study period, Modify the StateMod input ~ files to reflect end-of-month information. 8. RTIWR: Run watright for all reservoirs to be aggregated to determine storage decree weighted administration numbers for each of the White River Basin irrigation water rights aggregation classes, The same 10 administration number classes as determined through the analysis of the irrigation diversion rights will be used. Each decree weighted administration number will fill both accounts (operational and non-operational) for each of the aggregated reservoir nodes, The cumulative decree amount for each of the administration number classes will be divided by three and represented at each of the aggregated reservoir nodes. Create a basin report summarizing the number of water rights included in the aggregation, the sum of decrees on aggregated water rights, and the number of water rights. (the format of the basin summary report will be identical to the report generated for irrigation structures) 9 . STATE: Document the determination of aggregated reservoir/stock pond nodes, their associated decree weighted administration numbers, their location in the Phase III network, their physical capacities, erid-of-month content, and monthly targets in a 4-6 page draft memorandum. RTi will provide written comments prior to the State's finalization of the memo. Deliverables: I. List of net absolute storage rights in White River Basin not modeled in Phase II. 2. Cumulative total of stock pond capacities for White River Basin as described in a memo. 3. Locations of three aggregated reservoir nodes. 4. Set up of capacities in reservoir files for aggregated reservoirs, 5. Assignment of area capacity curves and evaporation stations to aggregated reservoirs. 6. Operational file to operate releases from the aggregated reservoirs, 7. StateMod input files reflecting assumed end of month contents for base flow generation. 11:69 Phase IlIa Scope of Services A.IS Jan31,1997