A boat motors through Lake Erie during an algal bloom, Monday, Aug. 26, 2024, at Maumee Bay State Park in Oregon, Ohio. (AP Photo/Joshua A. Bickel)

Matthew Kovach, a wetland ecologist, surveys the area near a human-made rock barrier in Sandusky Bay, Thursday, July 11, 2024, in Vickery, Ohio. (AP Photo/Joshua A. Bickel)

Deandra Jones prepares water samples, Monday, Aug. 26, 2024, at the National Center for Water Quality Research in Tiffin, Ohio. (AP Photo/Joshua A. Bickel)

Water flows along the shore of Lake Erie during an algal bloom, Monday, Aug. 26, 2024, at Maumee Bay State Park in Oregon, Ohio. (AP Photo/Joshua A. Bickel)

Bill Kellogg stands in a buffer strip that filters nutrient runoff from his agricultural fields, Tuesday, Aug. 27, 2024, in Forest, Ohio. (AP Photo/Joshua A. Bickel)

Emily Clark separates recently collected water samples for research, Monday, Aug. 26, 2024, at the National Center for Water Quality Research in Tiffin, Ohio. (AP Photo/Joshua A. Bickel)

Soybeans grow on each side of a buffer strip, which are designed to help filter nutrient runoff from fields, Tuesday, Aug. 27, 2024, at a farm in Forest, Ohio. (AP Photo/Joshua A. Bickel)

Liquid fertilizer tanks sit in a concrete basin, designed to contain any potential leaks, Tuesday, Aug. 27, 2024, at a farm in Forest, Ohio. (AP Photo/Joshua A. Bickel)

Water flows down the Sandusky River, Monday, Aug. 26, 2024, in Fremont, Ohio. (AP Photo/Joshua A. Bickel)

A phosphorus monitor operates next to a small stream near an agricultural field, Tuesday, Aug. 27, 2024, in Forest, Ohio. (AP Photo/Joshua A. Bickel)

Jake Boehler, field manager at the National Center for Water Quality Research, collects water samples from a monitoring station, Monday, Aug. 26, 2024, in Woodville, Ohio. (AP Photo/Joshua A. Bickel)

A strip-till tractor, used to plant fertilizer deep into a field's soil, sits inside a garage, Tuesday, Aug. 27, 2024, at a farm in Forest, Ohio. (AP Photo/Joshua A. Bickel)

Jake Boehler, field manager at the National Center for Water Quality Research, collects water samples from a monitoring station along the Sandusky River, Monday, Aug. 26, 2024, in Fremont, Ohio. (AP Photo/Joshua A. Bickel)