U.S. Geological Survey
National Water-Quality Assessment Program

USGS Internal Access Only

Report Plans

Dissolved solids in major aquifers and rivers of the Southwest

Status of Water Quality in the Carbonate Aquifer in the Basin and Range Province

Effects of agriculture and urbanization on shallow ground-water quality in the arid to semiarid western United States

Impact of flow-system alteration on ground-water quality in the arid to semiarid western United States


Go to the Basin and Range Alluvial and Carbonate-rock Aquifers Home Page
Go to the NAWQA Ground-Water Synthesis by Principal Aquifer Home Page