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Feet <br />A <br />7000 — <br />e _ <br />Figure 2. General cross-section of Denver Basin Aquifers, from Colorado Geological Survey <br />Special Publication 53. <br />GROUND WATER IN STORAGE <br />AQUIFER <br />SPECIFIC YIELD <br />VOLUME IN STORAGE <br />4WD <br />(millions of acre-feet) <br />Upper Dawson <br />20 <br />22 <br />Lower Dawson <br />20 <br />10 <br />3000 <br />Feet; <br />71 <br />Upper Arapahoe <br />Feet. <br />B <br />C <br />17 <br />B, <br />70DO <br />15 <br />Ama <br />TOTAL <br />70(0 <br />U0 <br />IF <br />Castle Rook Conglomerate <br />64D .. <br />.,..,...: <br />66t3ti <br />rapahoe Laramie Fox HMIs 3�� <br />,_m=�-.,.., <br />fY3 �I�?!!t.; ' <br />„�,.,�. FOntaai�On 'i <br />""'�-->--_..-,.:.._, Formation Sa <br />5040 <br />ndstaneQ <br />499a <br />anent <br />Manse Shale <br />:.. <br />P1eYt� ah��e <br />3000 <br />Vertical <br />exaggeration x 20 <br />d 10 20 Mi <br />Madded from., Robson,1987 390!7 <br />Figure 2. General cross-section of Denver Basin Aquifers, from Colorado Geological Survey <br />Special Publication 53. <br />GROUND WATER IN STORAGE <br />AQUIFER <br />SPECIFIC YIELD <br />VOLUME IN STORAGE <br />(millions of acre-feet) <br />Upper Dawson <br />20 <br />22 <br />Lower Dawson <br />20 <br />10 <br />Denver <br />17 <br />71 <br />Upper Arapahoe <br />17 <br />78 <br />Lower Arapahoe <br />17 <br />12 <br />Laramie -Fox Hills <br />15 <br />102 <br />TOTAL <br />295 million acre-feet <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 />Table 1: Estimated volume of water in storage in the Denver Basin aquifers <br />