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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!

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

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A creek and a restored oxbow from above

Multi-Purpose Oxbows Reduce Nitrates

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

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