Pacific Northwest basaltic-rock aquifers
![Map of Pacific Northwest basaltic-rock aquifers](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/ext_pacnorbr.gif?itok=HG87kEOb)
Detailed Description
Map of Pacific Northwest basaltic-rock aquifers. Unconsolidated-deposit aquifers, which consist primarily of sand and gravel, are the most productive and widespread aquifers in Idaho, Oregon, and Washington.
Sources/Usage
Public Domain.