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Eastern San Joaquin Groundwater Basin Groundwater Management Plan Mokelumne River Storage System Re-operation This alternative includes re-operating Pardee Dam and Reservoir, Camanche Dam and Reservoir, and Project 137 systems to generate additional water supply. Working with the USACE, it may be possible to redefine the flood control operating guidelines for the Mokelumne River. The latest trends in weather forecasting and hydrologic modeling could be utilized to operate the flood control capabilities of the Mokelumne storage system less conservatively to allow for greater conservation storage capacity. Re-operation could also consist of allocating more flood control storage to PG&E Project 137 thus reducing the required flood control storage defined by the rule-curves of Pardee and Camanche Reservoirs. The yield of the re-operation alternative is on the order of 10,000 af. Duck Creek Reservoir(Pardee or Camanche Diversions) The proposed Duck Creek Reservoir is an off-stream reservoir located in Eastern San Joaquin County in the Duck Creek watershed which drains into the Calaveras River at divergence of the Calaveras River and Mormon Slough at Bellota. The Duck Creek dam system would consists of a 6000' earthen main dam at the south end and a series of smaller coffer dams to the west. The optimal size of the reservoir will be determined in the engineering feasibility study. Figure 8-4 is the elevation-area-capacity curve for the proposed Duck Creek Reservoir. 250,000 5000 200,000 4000 150,000 Capcity Area 3000 - 100,000 2000 a 50,000 1000 0 0 170 190 210 230 250 270 290 310 Source: MORE WATER Project Elevation (feet) Phase I-Reconnaissance Study Summary Report,2004 Figure 8-4 Duck Creek Reservoir Elevation-Area-Capacity Curve Water would be diverted at either Pardee Reservoir or Camanche Reservoir for storage in Duck Creek Reservoir. A map and diagram of the Pardee Reservoir alternative are shown in Figure 8-5 and Figure 8-6, respectively. A diagram of the Camanche Reservoir alternative is shown in Figure 8-7, and a diagram of the proposed reservoir is shown in Figure 8-8. The water right application seeks to divert up to 1,000 cfs to storage and 620 cfs by direct diversion. The total maximum diversion capacity is 1,620 cfs from either Pardee or Camanche Reservoirs. Water diverted from Pardee Reservoir at a rate of 1,620 cfs would require a Regulated releases from Northeastern San Joaquin County Section 8 Groundwater Banking Authority 115 Integrated Conjunctive Use Program