is a product of Lake Stewards of Maine, in collaboration with state and federal agencies and nonprofits.

Lake Stewards of Maine (LSM) is the NEW name for the Maine Volunteer Lake Monitoring Program (VLMP). Please bear with us as we transition resources and materials to reflect this change. Click here for an explanation of the name change.

Information about Maine Lakes...
...Maps, Charts, Data, Documents & more

New! - Explore our Conservation & Biodiversity pages!
  • Find conservation lands around your lake
  • See where lake associations are working
  • Explore findings from Aububon loon surveys
  • Learn about Maine's heritage brook trout lakes
    & much more!
Click on the Conservation tab at the top of this page

Update! - 2017 water quality data update
The quality-assured water quality data recently received from DEP are now on-line. To view lake-specific data extracts, go to Your Lake and then click on Water Quality. OR, to explore the data files containing information for all surveyed lakes, click on the Source Data links (found in the right-hand panels).

Update! - Phone Users
We've made improvements to for iOS and Android phone users.

New! - Weather Forecasts
National Weather Service forecasts now appear on individual lake pages.


  • Lake associations in Maine
  • Researchers in Maine & elsewhere
  • Anglers, boaters, swimmers & other Maine lake users
  • Lake managers
  • This site can also help you make connections with "lake minded" people in your community, as well as virtually all of the organizations, agencies, educational institutions and others who provide information and services pertaining to Maine lakes. We hope your search is productive, and welcome your feedback about

What can you do at


  • Track the water quality of your lake. How does it compare with other Maine lakes?
  • Discover the native & non-native plants & animals that inhabit Maine lakes
  • Uncover the complexity of lake ecosystems


  • Download data
  • Search hundreds of documents by lake or by topic
  • Generate your own maps and graphics using dynamic data tools


  • Access publications and resources for teachers, educators and community organizers


  • Stay up to date on the best lake and watershed conservation practices
  • Link to watershed protection programs and resources
  • Learn how you can become a volunteer lake monitor


  • Find organizations and volunteers working to protect your lake
  • Contribute new information to the Lakes of Maine website!

Maine Volunteer Lake Monitoring Program
Near Real-time Lake Data is a collaboration of these organizations: