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Ralf Topper
<br />Table 2. Estimated Total and Recoverable Groundwater Reserves in the Denver Basin (storage in million of acre -ft)
<br />Senate Bill 5 Kiowa Core Data2
<br />Aquifer Total Reservesl (recoverable) (recoverable)
<br />Dawson 48 32 22
<br />Denver 89 71 50
<br />Arapahoe 150 90 63
<br />Laramie -Fox Hills 180 102 71
<br />Total 467 295 206
<br />1 from Robson, 1987; 2 calculated using data from Lapey, 2001
<br />Emmons, S.F., C.W. Cross, and. G.H. Eldridge, 1896, Geology of
<br />the Denver Basin in Colorado: U.S. Geological Survey Mono-
<br />graph 27.
<br />Lapey, L.A., 2001, Hydrologic parameters of the Kiowa research
<br />core, Kiowa, Colorado: Master's Thesis, Colorado State Univer-
<br />sity, Fort Collins, CO.
<br />Robson, S.G., 1987, Bedrock aquifers in the Denver Basin, Col-
<br />orado: A quantitative water - resources appraisal: USGS Profes-
<br />sional Paper, 1257, 73 p.
<br />Robson, S.G., and E.R. Banta, 1995, Groundwater Atlas of the
<br />United States, Segment 2 — Arizona, Colorado, New Mexico,
<br />Utah: USGS Hydrologic Investigations Atlas HA- 730 -C.
<br />Robson, S.G., and J.C. Romero, 1981a, Geologic structure hydrol-
<br />ogy, and water quality of the Dawson aquifer in the Denver
<br />Basin, Colorado: USGS Hydrologic Investigations Atlas HA-
<br />643, 3 sheets, scale 1:250,000.
<br />, 1981b, Geologic structure, hydrology and water quality
<br />of the Denver aquifer in the Denver Basin, Colorado: USGS
<br />Hydrologic Investigations Atlas HA -646, 1 sheet, scale
<br />1:500,000.
<br />Robson, S.G., J.C. Romero, and S. Zawistowski, 1981a, Geologic
<br />structure, hydrology and water quality of the Arapahoe aquifer
<br />in the Denver Basin, Colorado: USGS Hydrologic Investiga-
<br />tions Atlas HA -647, 3 sheets, scales 1:500,000 and 1:250.000.
<br />Robson, S.G., A. Wacinski, S. Zawistowski, and J.C. Romero,
<br />1981b, Geological structure hydrology and water quality of the
<br />Laramie -Fox Hills aquifer in the Denver Basin, Colorado:
<br />USGS Hydrologic Investigations Atlas HA -650, 3 sheets, scale
<br />1:500,000.
<br />Romero, J.C., 1976, Groundwater resources of the bedrock
<br />aquifers of the Denver Basin, Colorado: Colorado Division of
<br />Water Resources, 109 p.
<br />Solley, W.B., R.R. Pierce, and H.A. Perlman, 1998, Estimated use
<br />of water in the United States in 1995, USGS Circular 1200,
<br /><http: // water .usgs.gov /watuse /spread95 >. Accessed Nov. 20,
<br />2001.
<br />Topper, R., K.L. Spray, W.H. Bellis, J.L. Hamilton, and P.E. Bark -
<br />man, 2003, Groundwater atlas of Colorado: Colorado Geologi-
<br />cal Survey Special Publication 53, 210 p.
<br />Van Diest, P.H., 1891, On the artesian wells of Denver: Proceed-
<br />ings of the Colorado Scientific Society, v. IV, January, 1891.
<br />The Rocky Mountain Association of Geologists 152
<br />VanSlyke, G.D., J.C. Romero, G. Moravec, and A. Wacinski, 1988,
<br />Denver Basin atlases: Colorado Division of Water Resources,
<br />Office of the State Engineer, 4 parts (DB -1 through 4).
<br />VanSlyke, G. D., 2000, Denver Basin groundwater facts 2000: Col-
<br />orado Division of Water Resources, 2 p.
<br />VanSlyke, G. D., 2001, The Denver Basin, What lies beneath —
<br />What lies ahead, in Proceedings of the Troubled Waters, Den-
<br />ver Basin at Risk Conference, November 28, 2001, Denver,
<br />Colorado: Colorado Division of Water Resources.
<br />THE AUTHOR
<br />RALF TOPPER
<br />Ralf Topper is a senior hydrogeologist and project man-
<br />ager in the Environmental Geology section of the Col-
<br />orado Geological Survey. He has earned advanced degrees
<br />in Geology and Hydrogeology and has over 24 years of
<br />professional geoscience experience. Ralf was the lead
<br />author of the Groundwater Atlas of Colorado.
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