Pacific Northwest basin-fill aquifers
![Map showing the Pacific Northwest basin-fill aquifers](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/ext_pacnorbf.gif?itok=jEV6s_cP)
Detailed Description
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.