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USGS Hydrologist Jacob Conrad making a relative-gravity measurements to quantify the extent of the alluvial aquifer in the Leupp area of the Navajo Nation.

By Oregon Water Science Center
Alluvial aquifer sampling in Arizona
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Detailed Description

USGS Hydrologist Jacob Conrad making a relative-gravity measurements to quantify the extent of the alluvial aquifer in the Leupp area of the Navajo Nation. 

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Public Domain.