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James Wooton puts his scuba diving skills to work monitoring for aquatic invasive species in Otter Tail County lakes.

This long-term data gathering initiative helps track trends in water bodies around the state. The MPCA is grateful for every volunteer who has dedicated time to monitoring their favorite lake or stream.

State agencies, counties, municipalities, nonprofit organizations, and many others are engaged in protecting Minnesota lakes.

To help you quickly determine whether this permit affects you, what your requirements are, and what to do next, the MPCA has developed an Applicability flow chart

Dakota County is now hosting We Are Water MN, a traveling exhibit and community engagement program that explores Minnesotans’ relationships with water.

The Snake River Watershed is located north of the Twin Cities in the St. Croix River Basin and encompasses 1,006 square miles in five counties: Aitkin, Kanabec, Mille Lacs, Pine, and Isanti.

What is the blue-green scum that looks like spilled paint?In lakes that are over-enriched with phosphorus and nitrogen, algae tend to prosper and create algae blooms. Blue-green algae and one type in…

The MPCA proposes to adopt the U.S. EPA's 2013 national recommended water quality criteria for ammonia as its Class 2 ammonia water quality standards for the protection of aquatic life.

The health of Minnesota's large rivers is a reflection of how well we are protecting overall water quality.

Minnesota rivers are shrinking in the drought; some have their lowest flows in decades. What will be the long term effects?