Hydrogeology of Butler Valley, Arizona: An Artificial Recharge and Ground-Water Storage Prefeasibility Study

摘要

A USGS finite-difference computer program was used to assess possible artifical recharge and recovery in Butler Valley, Arizona. Available hydrogeologic data were compiled and analyzed to build a numerical ground-water flow model of the valley. The results of the computer simulations indicate that aquifer storage capacity increases in the upper portion of the basin due to a confined system in the lower portion. The computer model and available geologic data were used to identify potential locations in Butler Valley for artificial recharge operations. Gravity and seismic refraction data collected at the outlet of Butler Valley indicate that ground-water outflow during recharge operations would be minimal because of a shallow subsurface bedrock aquiclude.