Medicine Lake - Starry Stonewort Public Notice Waiver 2026
Three Rivers Park District received a waiver from the DNR requiring signatures from all lakeshore property owners approving the herbicide treatment. As a condition of the waiver, it is required that property owners are notified about the treatment; and property owners who are opposed are provided an opportunity to opt out of having the treatment near their shoreline property.
This public notice serves as the required property owner notification for the treatment. Other forms of public notice may include but are not limited to notification through email lists, websites, newsletters and/or meetings.
With regards to the treatment for this year, 2026:
1. The proposed date for treatments: There will be a maximum of 3 treatments from August 12 through
September 30, 2026
2. The target species for the treatment: Starry Stonewort (Nitellopsis obtusa)
3. The method of control or product being used: EPA and MDA registered aquatic herbicides, such as but not limited to: Komeen @ 1 ppm and Diquat @ 0.15 ppm
4. How landowners may request that control not occur adjacent to the landowner's property: If you desire that the treatment of Starry Stonewort NOT occur adjacent to your property, please notify the Three Rivers Park District immediately at the following address and email address below:
Three Rivers Park District
Brian Vlach – Senior Manager of Water Resources
[email protected]
763-694-7846
Water Levels on Medicine Lake
The City of Plymouth in partnership with the City of Medicine Lake recently installed a water level monitoring buoy just off the shore of West Medicine Lake Park, 1920 W. Medicine Lake Dr.
The buoy tracks water levels and temperature and adds them to an interactive dashboard for lake users to find without having to request the information from the city.
Those with questions should contact the Water Resources Division at [email protected] or 763-509-5500. Plymouth website link to water levels on Medicine Lake
Medicine Lake regulations: Slow no-wake speed when the water level exceeds 889.4 feet for three consecutive days and remains in place until the lake level drops to 889.4 feet or below for at least three consecutive days. Water level regulations help protect shorelines and prevent erosion.
2026 - 2035 Bassett Creek Watershed Management Plan
Medicine Lake Access, Invasive Species and Water Quality Reported dated December 22, 2022
West Med Boat Launch Closure - Plymouth Staff Report Dated March 24, 2020
About Medicine Lake - BCWMC page
Did You Know? Medicine Lake covers 936 acres and is the second largest lake in the metropolitan area. It’s deepest point is 49 feet.
Lake Related Web Sites
Below are some sites dedicated to Medicine Lake and other area lakes & streams.