The watersheds that feed the Western Basin of Lake Erie are home to thousands of crop and livestock farms. Those farmers use underground systems to manage rainwater, including many located where a massive swamp once made up the Ohio landscape.
All those farms face challenges managing fertilizers and water in their fields with drainage systems.
Great Lakes Now
https://www.greatlakesnow.org/2020/12/field-tiles-drainage-systems-pose-problems-lake-erie/