Chain of Lakes Weed Control Activities

A Guide to Using This Page

Below you can find the Treatment Maps for the lakes, canals and/or connectors on the Lower Huron River Chain of Lakes. On each map, you will find GPS waypoints. These waypoints are reference numbers to help locate specific locations on a map. If you have an area of concern please provide your nearest GPS waypoint number or the location address. This will allow us to locate the concerned area.

Please reference these maps and the Aquatic Services online calendar below for herbicide treatment areas and the dates of application.

Aquatic Services' herbicide application online calendar 

Aquatic Herbicides and/or Algaecides Treatment Notice

Treatment Maps

August 2023

  1. Portage Lake North Portion Livingston County August 2023
  2. Little Portage Lake Treatment Map August 2024
  3. Baseline Portage Connector Treatment Map August 2023
  4. Whitewood Lake Treatment Map August 2023
  5. Tamarack Connector Treatment Map August 2023

July

  1. Whitewood Lake Treatment Map July 2023
  2. Tamarack Lake Treatment Map July 2023
  3. Tamarack Connector Treatment Map July 2023
  4. Portage Lake South Portion Treatment Map July 2023
  5. Portage Lake North Portion Treatment Map July 2023
  6. Little Portage Treatment Map July 2023
  7. Baseline Portage Connector Treatment Map July 2023
  8. Base Line Lake Treatment Map July 2023

June

  1. Whitewood Lake Treatment Map (2) June 2023
  2. Tamarack Treatment Map (2) June 2023
  3. Tamarack Connector Treatment Map (2) June 2023
  4. Little Portage Treatment Map (2) June 2023
  5. Big Portage Treatment Map (2) June 2023
  6. Baseline Portage Connector Treatment Map (2) June 2023
  7. BaseLine Lake Treatment Map (2) June 2023

June

  1. BaseLine Lake Treatment Map June 2023
  2. Baseline Portage Connector Treatment Map June 2023
  3. Big Portage Treatment Map June 2023
  4. Little Portage Treatment Map June 2023
  5. Tamarack Connector Treatment Map June 2023
  6. Tamarack Treatment Map June 2023
  7. Whitewood Lake Treatment Map June 2023

May

  1. Base Line Lake Treatment Map May 2023
  2. Big Portage Treatment Map May 2023
  3. Little Portage Treatment Map May 2023
  4. Tamarack Connector Treatment Map May 2023
  5. Tamarack Treatment Map May 2023
  6. Whitewood Lake Treatment Map May 2023

Harvesting Maps

July

  1. Baseline Lake Harvesting Map July 2023
  2. Baseline Portage Connector Harvesting Map July 2023
  3. Little Portage Harvesting Map July 2023
  4. Portage Lake Harvesting Map July 2023
  5. Tamarack Lake Harvesting Map July 2023
  6. Whitewood Lake Harvesting Map July 2023
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