The Iowa Watershed Approach
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What is a wetland?Wetlands are strategically placed to capture surface runoff and drainage water. They provide temporary storage for floodwater which lowers downstream flood peaks and reduces streamflow by 10-20%. Additionally, they reduce nitrate-N concentration in water by 52% and filter out chemicals from pesticides and insecticides. Wetlands also serve as wildlife habitat for 190 amphibian species and 5,000 plant species.
Benning, Jamie and Craft, Kristina, "Wetlands" (2018). Extension and Outreach Publications. 442.
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