These two results give confidence in the model, and may be considered a partial validation of the results. Accepting the results as reasonably validated, they can be used to investigate well capture zones in three dimensions with some confidence. The capture zones illustrated by particle paths in Figs. Examination of Figs. Map view of travel time from water table to well C-20.
Colors show time as indicated in color scale.
The explanation for this phenomenon is simple if Qt is viewed as a confining layer. Where the confining layer is present between the water table and the Qal aquifer, travel times are increased. Within the 2-D capture zones depicted in Figs. In terms of cost-effectiveness, the CFR capture zone is quite good, but may omit some potential hazard areas in NE Hays. Where water supplies are limited, more detailed 2-D modeling of WHPA's seems prudent.