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As part of the Great Lakes Restoration Initiative, the U.S. Department of Agriculture, Natural Resources Conservation Service; U.S. Environmental Protection Agency; and the U.S. Geological Survey (USGS) have partnered to evaluate the impacts of implementing agricultural conservation practices focused on nutrient management. Monitoring methods have been designed to allow for rapid assessment of water-quality changes in response to conservation efforts by focusing on subsurface-tile drainage and direct surface runoff from fields—the major pathways for nonpoint-source pollution to enter streams. Monitoring stations were established at the field edge that measured runoff volume and enabled the collection of samples...
    map background search result map search result map Daily loads of nutrients, sediment, and chloride at USGS Great Lakes Restoration Initiative edge-of-field and tile stations Daily loads of nutrients, sediment, and chloride at USGS Great Lakes Restoration Initiative edge-of-field and tile stations