A river with rocks and grass at the edge. Pine trees in the distance.

Highlighting Minnesota Water Resource Center's research and education.

Minnegram is a quarterly publication of the University of Minnesota Water Resources Center and is sponsored by the University of Minnesota College of Food, Agricultural and Natural Resource Science, University of Minnesota Extension, the USGS-USDI National Institutes for Water Resources, and the Agricultural Experiment Station.

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Recent Minnegram News

A Sweeping Solution to Stormwater Pollution

April 12, 2023

by Maggie Karschnia, Minnesota Sea Grant, Water Resources Center
There’s a surprisingly simple and proven solution to stormwater pollution. When it rains in urbanized places like parking lots and paved streets, instead of soaking into the ground, stormwater runs off these impermeable — essentially water-proof — surfaces picking up and transporting pollutants along the way. 

How important are gross solids to stormwater pollution?

April 12, 2023

Larry Baker (WRS faculty), John Chapman (PI), Grace Wilson, Jacques Finlay (WRS faculty), Aaron Pietsch, and Kathryn Hoffman

We have learned in recent years that “gross solids” – coarse organic material (COM) like tree seeds, pollen, leaves, and sticks – that fall into streets add a lot of nutrients to stormwater, plus pebbles and trash, are not included in normal stormwater sampling, which collects only tiny, suspended solids (SS).

Aquatic invasive species prevention: Getting the best bang for the buck

April 12, 2023

by Nichole Angell
If you live in the Great Lakes region, you have more than likely heard of aquatic invasive species (AIS) and the risk they pose to the region’s highly valued water resources. AIS serve as ecosystem engineers negatively impacting the environment, economy, and human health. While invaders like zebra mussels and Eurasian watermilfoil can spread between waterbodies through various pathways, recreational boating is the biggest culprit.

Test your well water after flooding

April 5, 2023

by Anne Nelson, University of Minnesota Extension Water Team
If you have a private well water supply after heavy rains or flooding is a good time to inspect your well and get your drinking water tested at a certified laboratory. Proper well construction can help keep outside water, debris, and rodents from getting into your drinking water source, but sometimes small issues can go unnoticed. 


Analyzing potential public health concern of walleye mercury concentrations triggered by zebra mussel invasion

February 1, 2023

by Denver Link

Minnesota’s state fish is threatened by an aquatic invasive species, potentially inducing public health concern. The beloved walleye holds significant cultural and economic importance in Minnesota, but zebra mussels cause large scale changes that impact the food web. Water Resources Science graduate student Denver Link seeks to understand how zebra mussels impact food sources for walleye populations in Minnesota lakes.