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Aerial view of a winding river with multiple channels, sandbars, and islands
IPR photo by Madeleine Charis King

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Excess Nutrients Can Lie Dormant in Soil for Years Before Polluting Rivers, Study Finds

Wednesday, August 12, 2026
Iowa Public Radio
https://www.iowapublicradio.org/harvest-public-media/2026-08-10/usgs-study-nutr…
The University of Iowa

IIHR—Hydroscience and Engineering

 College of Engineering

100 C. Maxwell Stanley Hydraulics Laboratory
Iowa City, Iowa 52242-1585
Email: iihr@uiowa.edu
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Fax: 319-335-5238

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