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the distribution systems throughout the Uncompahgre Project Area of the Water and Power Resources Service. Analysis of these distribution systems is the responsibility of the Water and Power Resources Service, U.S. Department of the Interior. The size of irrigation stream and the duration of each irrigation were analyzed as the primary management variables affecting irrigation. Physical improvements in existing irrigation systems were analyzed to determine their effect on water use and the return flows that deliver salt to the Colorado River system. Options for physical improvements consist of ditch lining or pipelines including semi-automated timing devices, land leveling including the combining of small fields, closing of existing open drains for more efficient layout of fields and irrigation systems, and changing to drip or sprinkler methods of irrigation. Study Coordination Coordination of study activities leading to analysis of the overall salt loading problem in the Lower Gunnison Unit was accomplished through a Multi-Objective Planning Team under leadership of the Water and Power Resources Service (See Figure II-I). The MOP Team directed the activities of several sub-teams comprised of personnel of various disciplines from several agencies of government and other interested organizations. Periodic meetings of the MOP Team were held where progress reports were given, results of investigations by the sub-teams were shared and areas of common concern for the overall study were identified. Participants in this team effort included personnel from the Water and Power Resources Service, Soil Conservation Service, U.S. Fish and Wildlife Service, U.S. Geological Survey, Colorado Water Conservation Board, Colorado Department of Health and the Delta County Soil Conservation DistriC\) U \.'2.0 '1 11-4