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![A field tile dumps into Clear Creek in Iowa.](https://www.iihr.uiowa.edu/wp-content/uploads/2020/06/Invisible-Problem-6-fp-2-e1592408859523-495x400.jpg)
IIHR Among Recipients of $1M Water-Quality Grant
Researchers will gather water quality information from Upper Mississippi River basin states.
![One of Iowa’s constructed nutrient-reduction wetlands, which researchers hope will reduce nutrient runoff to the state’s rivers and streams, as well as the Gulf of Mexico. Photo by Adam Kiel, Iowa Soybean Association](https://www.iihr.uiowa.edu/wp-content/uploads/2020/06/CREP-wetland-e1436559622165-495x400.jpg)
Wetlands Improve Iowa’s Water Quality
The Conservation Reserve Enhancement Program (CREP) develops wetlands designed to remove nitrate-nitrogen from agricultural drainage water in strategic locations.