Simulation of Water-Table Response to Management Alternatives, Central Part ofthe Western San Joaquin Valley, California

摘要

The occurrence of selenium in agricultural drain-water in the central part of thewestern San Joaquin Valley, California, has focused concern on alternatives other than agricultural drains for managing shallow, poor-quality ground water. A transient, three-dimensional, finite-difference ground-water flow model was developed to assess the response of the water table to various management alternatives. The calibrated model was extended to forecast to the year 2040 for various management alternatives including maintenance of present practices, land retirement, reduced recharge, increased ground-water pumping, combinations of these alternatives, and five alternatives proposed by the U.S. Bureau of Reclamation.