- Type
- Harbour
Full-service marina and boatyard on the St Clair River at Algonac, near Russell Island in the St Clair Flats delta, Michigan.
Guide
Approach and anchoring
Enter from the St Clair River. The river runs strong here, often 2 to 3 knots southbound, and commercial freighters use the main channel. Stay clear of the shipping lane and approach the docks at slow speed.
Practical
Deep-water berths with shore power and fresh water. Sales and service for Sea Ray, Boston Whaler, Chris-Craft and Prestige. Summer dockage, winter storage and travel lift on site. Family-owned since 1958.
Ashore
Algonac town centre is within walking distance with shops, restaurants and a grocery store. Algonac State Park lies 4 km north along the river with hiking trails and birdwatching over the flats.
Key facts
- Type
- Harbour
- Coordinates
- 42.63272, -82.61637 (42°37.96'N 82°36.98'W)
- Town
- Russell Island
- Country
- United States
- Phone
- +18107944932
- Updated
- July 7, 2026
Getting there
Colony Marine Algonac lies at 42°37.96'N 82°36.98'W, that is 42.63272, -82.61637 in decimal degrees.
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