Located between Michigan's Upper and Lower Peninsulas. Deep draft commercial project that provides for a 1,250 feet wide channel between Mackinac Island and Round Island; and for removal of the Poe Reef shoal. Project depth is 30 feet.
Project Map - Straits of Mackinac
Project Map - Lansing Shoal
| 2023 PDF | eHydro Website |
| Round Island Passage | |
| Poe Reef Shoal | |
| 2021 PDF | 2021 DGN |
| Round Island Passage | Round Island Passage |
| Poe Reef Shoal | Poe Reef Shoal |
| Lansing Shoal | Lansing Shoal |
| 2019 PDF | 2019 DGN |
| Round Island Passage | Round Island Passage |
| Poe Reef Shoal | Poe Reef Shoal |
| Lansing Shoal | Lansing Shoal |