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processing to allow it to be internally consistent and to be HydroBase-compatible. The data <br />were used in Phases 1, 2, and 3 to help identify additional data needs in the Denver Basin <br />Region and to support the design of the groundwater field program. The water level data were <br />incorporated into HydroBase. <br />Below are conclusions from the completion of this task. <br />General Conclusions <br />^ The water level data collected, analyzed, and presented in this TM represent a <br />significant addition to the knowledge and characterization of the groundwater system <br />within the Denver Basin Region bedrock aquifers. This task of the SPDSS has compiled a <br />database of water level measurements from 1,572 separate bedrock wells with 24,384 <br />unique bedrock water level measurements in the Denver Basin Region. <br />^ Many of these data are being presented in this Task 44 TM for the first time in a publicly <br />accessible report and electronic database (HydroBase). The water level data and <br />mapping are the most comprehensive currently available. <br />^ Water levels in the bedrock aquifers in many areas of the Denver Basin Region have <br />undergone a decline in recent decades with the largest declines being around the south <br />Denver Metro area in Douglas County. The actual amount and rate of change in the <br />water level elevations in individual aquifers appears to be highly dependent on the <br />location, duration, and rate of pumping. <br />^ The trend analysis of water levels in each aquifer provides a valuable graphical <br />depiction of average changes in water levels. This depiction, while generalized, allows <br />water managers and others to identify areas of significant water level changes and <br />provides additional insight on a regional scale of the long-term effects of pumping the <br />bedrock aquifers. <br />^ Water level data for many historical time periods for many of the bedrock aquifers is not <br />available or the data available are not sufficient to contour. Developing water level <br />contours for the portions of each bedrock aquifer containing little or no data requires <br />engineering judgment that is beyond the scope of this TM. <br />Specific Conclusions <br />^ The Phase 3 Task 44 activities satisfied the task objectives of collecting available <br />published water level data, analyzing the data, enhancing HydroBase with these data, <br />guiding the Phase 1, 2, and 3 field investigations, and helping characterize groundwater <br />flow and water levels in the Denver Basin Region. <br />^ The primary source of water level data in the bedrock aquifers in the region since 1986 <br />has been the DWR. <br />^ The bedrock well installation and water level data collection that occurred under tasks <br />36 and 39 have helped fill previous water level data gaps, including bedrock data for the <br />autumn season. These data will help characterize the seasonal trends in the bedrock <br />SPDSS Phase 3 Task 44.2 TM -Final 16 <br />11/28/2006 <br />