Colorado Water Conversation Board Division of Water Resources

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• Implementation of training programs to facilitate access to data by water users • Increased effort in an existing Division 1 program to accurately locate most non- exempt wells within the Division • Constructing approximately 66 monitoring wells to provide additional geologic structure, aquifer property and water level data for the Denver Basin and Overlying Alluvium Region and the Lower South Platte Alluvium Region, thereby fulfilling many of the recommendations of Senate Bill 96 -74 (SB 96 -74) • Performing field studies at approximately 40 sites to characterize streambed conductance • Conducting aquifer pumping tests at 8 sites using existing pumping wells • Estimation of municipal well pumping based on user interviews, population data and water use data • Estimation of irrigation pumping based on crop irrigation requirements which have been calibrated with actual pumping records • Access to improved consumptive use and irrigated acreage data, including estimates of phreatophyte consumptive use in the basin • Development of, and access to, transit loss data • Easier access to additional and improved well location, water level and pumping data • Expansion of Stream Depletion Factors (SDF) into tributary areas where they do not presently exist • Development of a Geographic Information System (GIS) database (e.g., streamflows, diversions, wells, irrigated lands and ditch service areas) available to all users • Improved tools to access data and models, e.g., StateView, StateMod graphical user interfaces, time series tools and groundwater model displays • More efficient access to data for input to models and tools developed by others, e.g., access to crop coefficients for importation to the South Platte Mapping and Analysis Program (SPMAP) • Faster access to data as a result of upgraded hardware and software • Periodic updates and database refreshing • Graphical and visual displays of data • Mapping of current land use, including irrigated areas, crop types and vegetation (within the groundwater modeling areas) using multiple satellite images from the 2000 season. • Mapping of approximately 1500 diversion structures and approximately 500 irrigation distribution systems with water use linked to the irrigated acreage • Mapping of historic land use for three historic time periods including one each from the 1950s, 1970s and late 1980s. p: \data \gen \spdss \final report \executive summary.doc E -5 October 31, 2001