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WATER LEVELS IN THE ALLUVIAL AQUIFERS <br />OF THE LOWER SOUTH PLATTE RIVER BASIN <br />2007 <br />This report contains basic data concerning the depth to ground water and elevation <br />of the occurrence of ground water in the alluvial aquifers of the Lower South Platte <br />River Basin during the fall of 2007 and spring of 2008. <br />The monitoring network consists of approximately 105 wells. Data was obtained for <br />a total of 53 wells in 2007. The report contains data from these wells as well as <br />other wells which are part of this monitoring effort, but for which data were not <br />obtained in 2007. Historic data for all wells which are part of this monitoring effort <br />are included in the report. Wells that have not been measured in ten years have <br />been dropped from the publication. Semiannual data consistent with the format of <br />this report is included from the 36 monitoring wells used by the South Platte <br />Decision Support System. Daily average data calculated from the SPDSS hourly <br />measurements has been graphed and is included as appendix A. <br />Water level measurements in this year's report were obtained by Colorado Division <br />of Water Resources Water Commissioners and Elizabeth Pottorff. Measurements <br />are usually taken twice a year, typically in the spring before irrigation pumping <br />commences and again in the fall after irrigation pumping has ceased. The Division <br />took over collection of the SPDSS data in the Spring of 2008 with the assistance of <br />Robert Longenbaugh and funding from the Com Growers Association. Locations of <br />the observation wells are shown on Figure 1. <br />Water level changes were not analyzed. <br />Copies of this report are made available to well owners and participating entities <br />free of charge. Additional copies may be obtained from the Colorado Division of <br />Water Resources, Public Records Section. The Records Section can be contacted <br />at 1313 Sherman Street, Room 818, Denver CO 80203, or by phone at 303/866- <br />3581 or 303/866-3447. Additionally, this data may be accessed on the internet at the <br />Colorado Decision Support System website http://cdss.state.co.us/DNN/default.aspx <br />and can be exported to a number of different formats. <br />