Carver County Aquatic Invasive Species Program

Non-native aquatic plants, animals, and microorganisms are serious threats to Carver County water bodies. These organisms are distributed outside of their indigenous range mostly through human activities and can become invasive in their new environment. Not all non-native species are invasive. Actually, only a small percentage will invade a new environment. When predicting the chances of a non-native species becoming an invader, invasion biologists often use the “tens rule” as a general guide. For example, if 100 species were transplanted to a new environment, about 10% (or ten) of them would survive. Out of those ten, about 10% (or 1) would be invasive. This, however, does not mean that invasive species are not damaging. When a species becomes invasive, they develop abundant, widespread populations that negatively impact the environment, the economy, our health and the way we live. Non-native invasive species have contributed to nearly 40% of known animal extinctions and are considered the second greatest threat to biodiversity worldwide, after habitat destruction. 

Carver County increased its involvement in AIS management in 2014, when the State of Minnesota began providing funds to Counties to help prevent the spread of AIS on a local level. County staff worked with various partners to develop a Carver County Aquatic Invasive Species Prevention and Management Plan. The plan is updated on a yearly basis and includes the following four strategies: (1) promoting collaboration with other local and state agencies, organizations, and citizens, (2) watercraft inspections & decontamination, (3) education & public outreach, (4)  early detection monitoring & rapid response. We are also involved in other AIS projects, such as researching techniques to successfully manage common carp.

Please contact us or browse our invasive species reports to learn more about our program. 

View Locations of Infested Lakes



AIS Found in Carver County

Help Prevent the Spread

CLEAN plants, mud, zebra mussels and other animals/fish from boats, watercrafts, trailers, and recreation equipment before leaving any water access or shoreland. Rinse equipment with high-pressure, hot water.

DRAIN equipment including boat, ballast tanks, portable bait containers, motor, and swimming equipment. Also drain bilge, livewell and baitwell by removing drain plugs before leaving a water access or shoreline property. Keep drain plugs out and water-draining devices open while transporting watercraft.

DRY everything that came in contact with water for at least five days to be sure you have destroyed eggs or young zebra mussels. Store your boat on land if possible.

DISPOSE of unwanted bait, including minnows, leeches, and worms in the trash. It is illegal to release live bait into a waterbody or release aquatic animals from one waterbody to another. If you want to keep your live bait, you must refill the bait container with bottled or tap water.

Staff Contact

Andrew Dickhart