Gravelly Shoal Light
MI · Active aid to navigation
No access information published
Those records publish navigation and historic data only — no visitor-access information — so none is shown. Access, if any, is set by the owner or operator.
Access source: Federal records checked: the U.S. Coast Guard AtoN / Light List record for this aid · Checked 2026-11-12
Owner / operator: U.S. Coast Guard (active aid to navigation)
The light
| Location | MI (Arenac County) |
|---|---|
| Status | Active aid to navigation (USCG AtoN file) |
| Light List number | 10540 |
| Light characteristic | Fl R 6s |
| Height of light above water | 75 ft (USCG AtoN) |
| Structure | White square tower on cylindrical base. |
| Position | 44.01985, -83.53840 (federal record; not for navigation) |
| Coast Guard remark | HORN: 1 blast ev 30s (3s bl). Operates continuously. |
Sources
USCG AtoN file via NOAA MarineCadastre (USCG NAVCEN data).