More Mississippi River Basin Streamflow and Water Quality Information

USGS Streamgaging Network 2004

Nutrient monitoring in the Nation’s Largest Rivers (NASQAN Program monitoring)

Concentrations and flux estimates of selected water-quality constituents (NASQAN Program Data)

Assessing Nutrients in rivers, streams, and aquifers in the US (NAWQA Program Nutrients National Synthesis)

Water Quality Data for the Nation (National Water information System, NWIS)

Surface Water Data for the Nation (NWIS)

Water Data in your State (NWIS)

Upper Midwest Environmental Science Center Mississippi River water quality data

Long Term Resource Monitoring Program

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