Here’s the Latest!

A field trip group looks at a rock outcrop
A man in a blue jacket sits on a rock amidst green trees and foliage

Welcome to the IGS website!

As state geologist and director of the Iowa Geological Survey, it is my pleasure to welcome you to our new and improved website.

A creek and a restored oxbow from above

Multi-Purpose Oxbows Reduce Nitrates

New IGS research shows the value of oxbows in reducing nitrate.