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UPPER BLACK SQUIRREL CREEK <br /> DESIGNATED GROUNDWATER BASIN <br /> 2022 <br /> This report contains basic data concerning the depth to and elevation of groundwater in the Upper <br /> Black Squirrel Creek Designated Groundwater Basin collected in early April 2022. Acquisition and <br /> publication of this information is a cooperative effort between the well owners, Upper Black <br /> Squirrel Creek Ground Water Management District, and the Colorado Division of Water Resources. <br /> The project is part of a statewide groundwater-level monitoring program funded by Senate Bill <br /> 200 (1987 legislative session). This legislation directed that a portion of the fees collected for <br /> water well permit applications be used for the establishment of a program to monitor water-level <br /> trends throughout the state. <br /> This report contains water-level measurements from 35 wells. The locations of the wells and the <br /> extent of the alluvial aquifer are shown on the following map. Water-level measurements for 28 <br /> wells were recorded in early April 2022. Depth to groundwater below ground surface ranged from <br /> 9 to 145 feet. A water level in excess of 100 feet deep was measured at only one location: <br /> BS-SLB4. <br /> The wells in this report are listed by well name in numerical order. Tabular data are presented for <br /> each well for the previous ten years while graphical data are presented for the entire period of <br /> record. Measurements for the full period of record may be accessed from the Division of Water <br /> Resources' HydroBase database. Wells lacking measurements in the past 10 years have been <br /> removed from the monitoring program and are no longer included in this publication. A map <br /> depicting water-table contours for January 2008 is included to give the user a sense of <br /> groundwater flow directions in the alluvial aquifer. This map is Plate 14 from the Colorado <br /> Geological Survey 2008 report on the basin. <br /> Analyses of water-level changes in the aquifer are complicated by unknown pumping schedules. <br /> Overall, average groundwater levels at measured wells had a modest 0.81 foot decrease, from <br /> 2021. The largest decline of 2.71 feet was reported at well BS-10, while the greatest increase of <br /> 0.83 feet was reported at well BS-25A. Basin-wide, average water levels in 2022 were within <br /> approximately 0.8 feet of the 5-year comparison and 0.3 feet of the 10-year comparison, <br /> indicating relatively static water levels. <br />