Public Boat Ramps on Thunder Bay River - Lower South Branch, Michigan

We currently track 2 verified public boat ramps with access to Thunder Bay River - Lower South Branch in Michigan, all located within Alpena County. Use the map and ramp listing below to compare launch fees and access details.

2 Boat ramps
1 County
No free ramps confirmed yet
Alpena County Top county (2)

Map of Thunder Bay River - Lower South Branch Boat Ramps

Compare every public boat ramp on Thunder Bay River - Lower South Branch in one map. See where each launch is located, compare access points, and choose the most convenient place to get on the water.

Boat launch locations on Thunder Bay River - Lower South Branch

Browse every verified launch site we've published on this waterway, with fee information, nearby towns and access details.

Current Conditions

Check the latest weather forecast and available water quality information before heading out. Depending on the location, one or both data sources may be available.

Current weather

67°F Cloudy

Wind W 10 mph

Full NWS forecast · via National Weather Service
Last updated Aug 27, 2026 at 2:35 PM

Frequently asked questions

The questions people ask most often before launching on Thunder Bay River - Lower South Branch.

There are currently 2 public boat ramps on Thunder Bay River - Lower South Branch in Michigan.

We haven't confirmed any free ramps on Thunder Bay River - Lower South Branch yet - check the fee badge on each listing for the latest status.

Alpena County has the most, with 2 public boat ramps on Thunder Bay River - Lower South Branch.