Traveltime-related capture areas of wells can be estimated in hydrogeologic settings with predominantly two-dimensional flow regimes using image-well theory, the principle of superposition, an appropriate well-hydraulics equation, and particle-tracking analysis. These analytical methods can be used to simulate the response of an aquifer to pumping stress by incorporating site-specific values of hydraulic properties, the effects of geologic and hydrologic boundaries, nonuniform regional hydraulic gradients, and well interferences. Analytical flow models based on the Theis equation and the Hantush-Jacob equation were constructed from conceptual flow models based on geologic, hydrologic, and pumpage data from wellfields completed in a confined/unconfined stratified-drift aquifer and in a leaky-confined fractured-carbonate aquifer. Predicted head distributions from the calibrated flow models were used in a particle-tracking analysis to compute flowpath trajectories and traveltime-related capture areas. The results compare favorably with known flowpaths from sources of contamination proximal to each wellfield.
|Original language||English (US)|
|Number of pages||11|
|State||Published - May 1991|
ASJC Scopus subject areas
- Earth and Planetary Sciences (miscellaneous)
- Water Science and Technology