The Great Lakes Observing System estimates mapping all five lakes will cost $200 million. The money would be spent on a combination of advanced sound and light detection technologies over ...

The Michigan Department of Natural Resources says 1,500 shipwrecks are submerged in Michigan waters, making up one quarter of the estimated 6,000 wrecks found throughout the Great Lakes.

We have received text from H.R. 2731: Great Lakes Mapping Act of 2025. This bill was received on 2025-04-08, ... Completing a high-resolution map of the lakebeds of the Great Lakes.