Thompson Lake

Thompson Lake

Welcome to the Thompson Lake website.  This is your source of information for news and events relating to the lake management activities.

The Livingston County Drain Commissioner's Office (LCDC) serves two main functions on Thompson Lake:

Managing the Lake Level and Dam

The Thompson Lake level was established under Part 307 of the Natural Resources and Environmental Protection Act (NREPA), also known as Public Act 451 of 1994, as amended.  The summer and winter lake levels are mandated by a 1984 Court Order, which came about by petition from the residents.  The Livingston County Drain Commissioner is responsible for maintaining the levels through operation of the dam.  LCDC is also responsible for inspecting and maintaining the dam.  The Court Order requires the lake to be lowered three feet every other year.  To compensate for the potential loss of fish habitat, stocking of northern pike is required in the years the lake level is lowered.

Managing the Weed Control Program

The Thompson Lake Improvement Board (LIB) was established under Part 309 of NREPA.  The Board initiates public hearings to establish a lake improvement project based on the needs of the lake and feedback from the residents.  The lake improvement project could include various activities such as weed control, dredging, engineering studies, plant surveys, etc.  The Board is responsible for managing the detailed activities of the approved lake improvement project.

For questions regarding Thompson Lake, please contact Mitch Dempsey at or call 517-546-0040.


Winter Lake Level

Thompson Lake will remain at the current level of 904.5 through Winter 2021-2022. 

Tentative Treatment Schedule

No upcoming scheduled treatments.  Next treatment likely to occur in 2022.

Upcoming Meetings

Hearing of Practicability and Review of Thompson Lake Special Assessment Roll:

Wednesday, August 11, 2021 at 7:00pm, upstairs in the historic Livingston County Courthouse located at 200 E. Grand River Avenue in Howell, Michigan.

Draft Special Assessment Roll details

Draft Special Assessment Roll visual version

Please note that this is a draft roll and some changes may still occur.  Final special assessment roll to be available during the public hearing on August 11th, 2021.

Thompson Lake Improvement Board Meeting

Thursday, November 4, 2021 at 12:00pm, Room D, Livingston County East Complex located at 2300 E. Grand River Ave, Howell, Michigan 48843.

 Fish Stocking

Thompson Lake is stocked with fish every other year as a requirement of the 1984 Court Order, which sets the elevation of the lake and allows the lake to be lowered every other year.  The most recent stocking occurred in November 2020.  The next fish stocking event will occur in 2022. 

 Recent Activities

Several activities were completed in 2020, including:
  • Weed Treatments
  • Floating Island Removal
  • Weed Harvesting
  • Fish Stocking

 Future Activities

Several activities are planned for 2021 and 2022, including:
  • Newsletter
  • Floating island removal as needed
  • Continuation of weed control program
  • Public Hearing

 Lake Resources

Coming Soon! 

The Lake Resources page provides helpful information about Thompson Lake, including lake photos, maps, and information about the legal lake level. Click here to access these resources.