The unregulated Santa Maria River in west-central Arizona.
![The unregulated Santa Maria River in west-central Arizona.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/SantaMariaRiverunregulated.jpg?itok=UiUwQvJB)
Detailed Description
The unregulated Santa Maria River in west-central Arizona. Photo by Patrick Shafroth, USGS.
The unregulated Santa Maria River in west-central Arizona. Photo by Patrick Shafroth, USGS.