For an in-depth look at Lake Erie watersheds, the U.S. Geological Survey (USGS) partners with several state agencies (New York State Department of Environmental Conservation, Ohio Environmental Protection Agency, Indiana Department of Environmental Management, and Michigan Department of Environmental Quality) to track changes in nutrient and sediment loads, at specific locations within the watersheds.

Information from smaller watershed sites allow management agencies to track progress toward nutrient reduction goals at a smaller scale. This information may inform future decisions regarding the locations and number of management practices that are needed.