Minnesota Real-time Water Quality

Real-time computed concentrations of water-quality constituents such as suspended sediment, total nitrogen, and total phosphorus are calculated using ordinary least squares regression models. The results of these models, along with direct water-quality measurements, can be viewed here as time-series graphs, or downloaded as tabular data.

Ordinary least squares regression models on this site use conventional sensor measurements (for example, discharge, temperature, pH, specific conductance, turbidity, and dissolved oxygen) to compute concentrations and loads of other water-quality constituents in real time. This makes it possible to compute instantaneous values of many constituents in real time for public safety without the lengthy time delay of collecting a sample and waiting for analysis of a sample at a laboratory.

Please select a site from below to start viewing data. You also can read more about the methods, measured constituents, and disclaimers by using the navigation bar at the top of each page.

Map Legend

	Continuous Water-Quality Gage
	Discontinued Continuous Water-Quality Gage

Station Name	Station Identifier	County	Computation Period
Blue Earth River at Hwy 169 at Mankato, MN	05321995	Blue Earth	Jan. 2017 to present
Knife River near Two Harbors, MN	04015330	Lake	Jan. 2017 to Present
Minnesota River at Fort Snelling State Park, MN	05330920	Hennepin	Jan 2017 to Present
Zumbro River at Kellogg, MN	05374900	Wabasha	Jan. 2017 to Present