Lake Minnetonka Conservation District

FAQs & Resources


Common Topics

The LMCD receives many questions about the environment, safety, and other items related to Lake Minnetonka. Information and resources for the of the most commonly asked items are provided below.

Algae, Slime, and Blue-Green Algae

Many of the algal blooms are not harmful and more of nuisances. However, the blue-green algae (a bacteria) can become harmful to people and pets. The following resources provide information about the most common types of algae and how to identify them.

Carbon Monoxide Alarms and Watercraft

Carbon monoxide (CO) is an odorless, colorless, tasteless gas that can be toxic even in very small quantities since its effects are cumulative over time. Whether inside, outside, underway or anchored, passengers of many types of boats with a motor can quickly become victims of CO poisoning. A quick inspection every time you operate your boat can save a life, carbon monoxide poisonings are preventable. Some new regulations go into effect May 1, 2018.  Please visit the MN DNR website to determine if your watercraft is in compliance with the new regulations and to learn ways to prevent CO poisoning. Visit

Electric Shock Drowning (ESD)

ESD is a drowning resulting from paralysis caused by electrical currents in the water.  This happens when electricity that is installed around boats and docks leaks into the water.  Humans and animals have been harmed or died due to ESD.  To prevent ESD, it is recommended that you do not enter water around boats and docks using electrical power. The following resources provide information about the dangers and prevention of Electric Shock Drowning (ESD).  If you have any questions, please contact Ed Lethert at 612-670-9801 or

Shore Power Diagram - opm

Hydraulic Water Jets

Hydraulic water jets, if used properly, are allowed to move water. However, it is illegal if the water jets uproot aquatic plants or move sediment. It is also important that property owners use them so they do not create nuisances for the neighbors. The MN DNR provides information about potential impacts if used improperly.