We want to join LVD and share important information concerning Bass Lake in Watersmeet Township.
The Michigan Department of Environment, Great Lakes, and Energy (EGLE) received a report of possible chemical herbicide treatment to Bass Lake. The application date and the chemical(s) used are currently unknown. This was not a state permitted application of chemicals.
The use of aquatic herbicides and other chemicals are regulated under state law (Part 33, Aquatic Nuisance Control, of the Natural Resources and Environmental Protection Act). These laws are designed to protect public health, our waters, and the environment.
Based on early observations, the activity appears to have affected both invasive and native aquatic plants.
Because we do not yet know the herbicide used, EGLE reports that it is “unknown” if swimming or fishing in Bass Lake is safe. Likewise, we do not yet know if the chemical(s) applied in the lake will impact fish or other animal species. Due to these concerns, we posted notices prohibiting swimming and fishing in Bass Lake yesterday.
LVD’s Natural Resources Department is working closely with EGLE as they investigate. Both agencies are taking steps to collect water and sediment samples from Bass Lake. These tests may help us all understand what type(s) of chemical(s) were used and how the lake may have been impacted.
If you have any information that may assist in understanding what occurred on Bass Lake, please contact the Aquatic Nuisance Control Program, Department of Environment, Great Lakes, and Energy at 517-284-5593 or email at EGLE-WRD-ANC@Michigan.gov.
Yvonne Clark
Watersmeet Township Supervisor
October 9, 2025