harmonizing the collection, sharing, and use of lake floor data for the great lakes and their connecting channels

The Great Lakes Bottom Mapping Working Group (BMWG) was formed in 2016 to facilitate the collection, harmonization, sharing, and use of continuous high-resolution maps and data about Great Lakes bathymetry, habitat, maritime cultural resources, and biology.

The working group is a collaborative effort to promote communication and collaboration among data providers and data users, facilitate access to data, promote use of technical standards for mapping and habitat classification, and prioritize regional mapping needs.

The working group consists of agencies, organizations and citizens with an interest in some aspect of lake bottom environment. Any individual or organization can participate simply by signing up.



Lakebed 2030 Conference

Sept. 29 – Oct. 21, 2021

This fall, join other professionals in science and research, policy, government, and industry to:

  • Focus on Great lakes marine mapping and bathymetry data.
  • Develop a strategy to catalog new and existing lake bed information for shared use.
  • Share the latest technology advancements with the Great Lakes community.
  • Presentation proposals due July 30

Interested in Finding Out More?

Subscribe to the GLBMWG Newsletter

Subscribe to keep up on recent developments in Great Lakes bottom mapping, receive updates on new data sets, and learn about how you can get involved!

Contact the Bottom Mapping Working Group!

It is our goal to maintain data services and information regarding up-to-date bathymetry, sonar data, and derived products. If you have new research, resources, or communications relevant to Great Lakes bottom mapping you’d like to share, please contact us.