Click the links below to download data and methods descriptions for the nutrient impairments and source water watersheds within the Great Lakes Basin featured in the Source Water Nutrient Impacts results page.
Related content
Source Water Protection Planning
Click below to download data on source water protection planning across the Great Lakes Basin.
USGS Water Use Data for the Nation
The USGS Water Use Data for the Nation includes data on water use across the United States.
Lake Michigan Basin Waterbodies under Clean Water Act Section 303(d)
River segments, lakes, and estuaries designated under Section 303(d) of the Clean Water Act in Lake Michigan Basin (MI and WI).
U.S. EPA Water Finance Clearinghouse
The Water Finance Clearinghouse allows communities to access information and resources for water infrastructure and services, including funding sources and reports. The Clearinghouse contains information on watershed protection and source water.
USGS Daily Streamflow Conditions
The USGS's Daily Streamflow Conditions dataset includes data on streamflow at 9,936 sites across the United States.
Streams and Waterbodies of the United States
The Streams and Waterbodies of the United States data layer shows the location of water features throughout the United States, Puerto Rico, and U.S. Virgin Islands
Groundwater Contours of Michigan
The Groundwater Contours of Michigan dataset includes individual county datasets of the elevation of the water table (first water) encountered every 30 meter across the landscape.
Minnesota Source Water Protection Reports and Geospatial Data
The Minnesota Department of Health provides GIS shapefiles on drinking water protection area, as well sampling results of manganese, radionuclides, nitrates.
National Hydrography Dataset (NHD)
The NHD displays the drainage network, specifically rivers, streams, canals, lakes, ponds, coastline, dams, and streamgages in the United States.