Thunder Bay River access points and trip distances, Michigan
10 access points (10 public) along 73.1 river miles of the Thunder Bay River in Michigan. Distances are measured along the river on the NHDPlus V2 main-stem flowline, not straight-line. River mile 0 is the farthest-upstream access listed here.
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Dark dots are public access points; brown dots are private, members-only or agency-land access. Tap a dot for its river mile and coordinates.
Access points in river order
| River mile | Access | Latitude, longitude | To next (river mi) |
|---|---|---|---|
| 0.0 | McCormick Lake About 0.13 mi from the mapped river line. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 44.95559, -84.25307 | 8.4 |
| 8.4 | Briley Township Park Boat Launch Mapped in OpenStreetMap, check access locally. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.00280, -84.14390 | 22.9 |
| 31.2 | Boat ramp near Brush Creek Mapped in OpenStreetMap, check access locally. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.05999, -83.90425 | 34.4 |
| 65.6 | Lake Winyah East Boat Launch Mapped in OpenStreetMap, check access locally. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.10503, -83.52236 | 0.8 |
| 66.4 | Four Mile Boat Launch Mapped in OpenStreetMap, check access locally. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.09992, -83.50942 | 3.3 |
| 69.6 | Boat ramp (north ramp) Mapped in OpenStreetMap, check access locally. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.06701, -83.47125 | 0.9 |
| 70.6 | Boat ramp near Fletcher Creek Mapped in OpenStreetMap, check access locally. About 0.11 mi from the mapped river line. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.06423, -83.45595 | 0.5 |
| 71.1 | Alpena County Fairgrounds Boat Launch Mapped in OpenStreetMap, check access locally. About 0.14 mi from the mapped river line. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.06807, -83.44944 | 1.0 |
| 72.1 | Eleventh Avenue Boat Launch Mapped in OpenStreetMap, check access locally. Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.07327, -83.44006 | 1.0 |
| 73.1 | North Riverfront Park Launch page View in Google Earth (opens in a new tab) Directions (opens in a new tab) | 45.06313, -83.42868 | end |
Sources: river line and lengths from NHDPlus V2 via EPA WATERS (lengths scaled to each reach's published length); access points from Michigan DNR Boating Access Sites, OpenStreetMap contributors (ODbL). Only access points in our launch data are shown, so there may be others. Check access, dams and conditions before you go.
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