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USGS employee taking a measurement on a domestic groundwater well

By Water Resources Mission Area 2010 (approx.)
USGS employee taking a measurement on a domestic groundwater well
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Detailed Description

USGS employee taking a measurement on a domestic groundwater well. Photo from the USGS circular 1360 "Water Quality in Pricipal Aquifers of the United States, 1991-2010."

Sources/Usage

Public Domain.