Data for the Nutrient Impairment and Surface Water Intake Viewer

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

The Minnesota Department of Health provides GIS shapefiles on drinking water protection area, as well sampling results of manganese, radionuclides, nitrates.

River segments, lakes, and estuaries designated under Section 303(d) of the Clean Water Act in Lake Michigan Basin (MI and WI).

The USGS's Daily Streamflow Conditions dataset includes data on streamflow at 9,936 sites across the United States.

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.

The STORET Data Warehouse is the EPA's repository of the water quality monitoring data collected by water resource management groups across the country.

The USGS Water Use Data for the Nation includes data on water use across the United States.

This Watershed Boundary dataset for Michigan lists the hydrologic units for watersheds in Michigan.

The NHD displays the drainage network, specifically rivers, streams, canals, lakes, ponds, coastline, dams, and streamgages in the United States.