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U.S. Geological Survey physical scientist Kendra Markland checks data gathered at a river flow monitoring station along the Cedar River Bridge near Palo, Iowa on No. 14, 2022. The USGS collects water samples from the river once a month. The agency tests samples for several substances including nitrate level.
JIM SLOSIAREK
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The Gazette
One year away from a federal deadline to reduce nutrient runoff into the Gulf of Mexico by 20%, increases in tile drainage, livestock and fertilizer use have made success unlikely.
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