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002541 1996 Report to the Rio Grande Compact Commission Bureau of Reclamation District and EI Paso County Water Improvement District No.1, Caballo Reservoir storage level is targeted not to exceed 50,000 af, at an elevation of 4,144.95 ft, during October 1 through January 31 of each year when conservation storage space is available in Elephant Butte Reservoir. Significant variation above 50,000 af requires collaboration efforts by the District and Reclamation. Reclamation's proposal for operation of Caballo Reservoir during February 1 through September 30, 1997, is to maintain storage levels within a flexible range of 30,000 af, such that the storage level would not be less than 50,000 af (elevation 4,144.95 ft) and not to exceed approximately 80,000 af (elevation 4,151,63 ft) as long as usable conservation space is available in Elephant Butte Reservoir. These operational procedures will keep more water in Elephant Butte Reservoir in order to reduce evaporative losses and at the same time provide for sufficient operational hydraulic head for releases, a reserve. pool in case releases are interrupted from Elephant Butte Reservoir and minimize changes to release rates from Elephant Butte Reservoir. This will be coordinated with Elephant Butte Irrigation District and EI Paso County Water Improvement District No. 1 in September of each year. Elephant Butte Reservoir Flood Study Reclamation's Technical Service Center has completed a study to evaluate the need for prudent flood control space in Elephant Butte Reservoir. Copies of the report will be provided to the Rio Grande Compact Commission, International Boundary and Water Commission, and U.S. Corps of. Engineers, The study may be instrumental in investigating the distribution of flood control capacity between Elephant Butte and Caballo Reservoirs as coordinated between Reclamation, International Boundary and Water Commission, and U.S. Corps of Engineers. Initial indications are that the flood study supports the concept of an approximate 1 DO-year prudent operating space of 50,000 af in Elephant Butte Reservoir, The International Boundary and Water Commission continues to pursue funding to develop flood hydrology for Elephant Butte and Caballo Reservoirs, in coordination with their on-going levee design studies downstream of Caballo Dam. Data Automation and Instrumentation and Flow Monitoring System Historical and new hydrologic data related to the Rio Grande Project will be converted to digital format including graphical images of hard copy information. The information will be placed in a database for easy access, 26