The Thunder Bay River flows 75.4 miles from its headwaters in Oscoda and Montmorency counties eastward through Alpena County, emptying into Thunder Bay — a large bay of Lake Huron — at downtown Alpena. The river mouth is marked by the historic Alpena Light Station. Several impoundments along the river's course create additional fishing and recreation opportunities upstream.
The river mouth area near Alpena can develop ice in winter, but conditions vary significantly — proximity to Lake Huron means ice can be unpredictable and dangerous near the bay. Upstream sections of the Thunder Bay River may freeze more reliably. Always check local conditions before venturing out.
Where does the Thunder Bay River boat launch put you?
Is there a fee to launch on the Thunder Bay River in Alpena?
How big is the boat ramp at Thunder Bay River?
How long is the Thunder Bay River?
Are there campgrounds near the Thunder Bay River launch?
Can you access Lake Huron from the Thunder Bay River launch?
What is Thunder Bay National Marine Sanctuary?
Is there a dog park near the Thunder Bay River boat launch?
The Thunder Bay River runs 75 miles through Montmorency and Alpena counties before emptying into Thunder Bay — a bay of Lake Huron — right in the heart of downtown Alpena. The single public launch here sits near the river mouth, giving you direct access to Lake Huron's Thunder Bay. This is serious Great Lakes territory: Thunder Bay National Marine Sanctuary is right offshore, protecting over 100 historic shipwrecks, and the Alpena Light Station guards the river mouth. The launch handles two boats at a time and costs around $7-8 per launch, with season passes available.
The river itself drains much of Alpena and Montmorency counties plus a slice of Oscoda County. Upstream stretches offer smallmouth bass, walleye, and steelhead runs depending on the season, while the river mouth area connects you to Lake Huron's diverse fishery. Downtown Alpena is steps away, and several campgrounds — including Thunder Bay RV Park and Camper's Cove — are nearby. One honest caveat from locals: the DPI factory adjacent to the launch can produce some strong odors, and parking sometimes gets tight due to non-boaters using the lot.