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<br />Figure 2. General cross-section of Denver Basin Aquifers, from Colorado Geological Survey <br />Special Publication 53. <br /> <br /> <br />GROUND WATER IN STORAGE <br /> <br /> <br /> AQUIFER SPECIFIC YIELD VOLUME IN STORAGE <br /> <br /> __ (millions of acre-feet) <br /> <br />Upper Dawson 20 22 <br /> <br />Lower Dawson 20 10 <br /> <br />Denver 17 71 <br /> <br />Upper Arapahoe 17 78 <br /> <br />Lower Arapahoe 17 12 <br /> <br />Laramie-Fox Hills 15 102 <br /> <br /> TOTAL 295 million acre-feet <br /> <br /> <br />Note: Based on analysis of drill core from a location near Kiowa, the stated specific yield <br />values may be as much as 25 to 30 percent above an “average” specific yield value for the <br />Denver Basin aquifers. Therefore, the actual volume of water contained in the aquifers may be <br />less than the volumes estimated. <br /> <br /> <br />Table 1: Estimated volume of water in storage in the Denver Basin aquifers <br />