Grosse Ile is the largest island in the Detroit River and is the second most populated island in the State of Michigan (after Copper Island). The island is approximately 9.6 square miles. The township of Grosse Ile actually includes over a dozen islands, many of which are small and uninhabited.
The Waterway Guide Team has gained extensive boating knowledge over the years, and now we are sharing all of the tips, skills and tools we’ve picked up along the way!