Simulated potentiometric surface contours of prepumping conditions in layer 1 of the transient ground-water flow model of the Death Valley regional ground-water flow system, Nevada and California
These simulated potentiometric surface contours represent prepumping (or steady-state) conditions for model layer 
1 of the Death Valley regional ground-water flow system (DVRFS), an approximately 45,000 square-kilometer region 
of southern Nevada and California. The numerical ground-water flow model simulates …