USGS employee sampling a groundwater well 2
By Water Resources Mission Area
2009 (approx.)
Detailed Description
USGS employee sampling a groundwater well. Photo from USGS circular 1358 "Water Quality in Basin-Fill Aquifers of the Southwestern United States: Arizona, Californian, Colorado, Nevada, New Mexico, and Utah, 1993-2009.
Sources/Usage
Public Domain.