It’s difficult to notice how the aquifer connects with the river while standing above. It’s not an underground river; rather, its a layer of sand and gravel with water saturated in between ...

Locate construction materials such as sand and gravel. Identify groundwater aquifers. Provide data about subsurface stability and risks. Evaluate sites for waste disposal facilities. Locate natural ...

The Boone County 3D Geologic Mapping project helps specialists understand where our water gets into the ground and how to ...

The aquifer sediment at this site is a ferric oxyhydroxide-coated sand and gravel glacial outwash. The nearby infiltration of secondary sewage effluent created a useful geochemical contrast in the ...

27 percent of the metro-area monitoring wells in sand and gravel aquifers had chloride concentrations that were greater than drinking water guidelines set by the United States Environmental ...

Shortage on the Colorado River increases the importance of protecting groundwater as the backup supply for cities in central ...