Water-Quality Changes in the Nation's Streams and Rivers
![Interactive Water Quality Map Brings Together 40 Years of Water-Quality Data](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/OnlineTrendMapper.jpg?itok=IaUnCbqU)
Detailed Description
This mapper provides results from the largest-ever assessment of water-quality changes in the Nation's streams and rivers. More than 185 million water-quality records from over 600 Federal, State, Tribal, and local organizations were screened as part of this assessment.
Sources/Usage
Public Domain.