Visualizing the Geology of Lake Trout Spawning Sites Northern Lake Michigan

U.S. Geological Survey

Geologists and biologists are working together to understand the links between lake floor geology (composition and shape) and the distribution of lake trout throughout their life cycle. Geology is one of the main factors determining where lake trout spawn, feed, and hide. In support of ongoing research to study Lake Michigan trout habitats, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers (USACE), mapped the morphology of principal lake trout spawning sites.

Courtesy of U.S. Geological Survey.

Map Book Page [PDF]