 | |
 | |
| Location | End of N breakwater at Thunder Bay River mouth, 150 ft. from shore, Alpena, Michigan |
|---|---|
| Coordinates | 45°3′37.5″N 83°25′22.44″W / 45.060417°N 83.4229000°W |
| Tower | |
| Constructed | 1914 |
| Foundation | Breakwater[3] |
| Construction | Cast iron[4] |
| Height | 34 feet (10 m)[1] |
| Shape | four-legged pyramid skeleton tower |
| Markings | Red Daymark with upper part enclosed |
| Heritage | National Register of Historic Places listed place  |
| Fog signal | HORN: 1 blast ev 15s (2s bl). Operates May 1 to Oct. 20.[5] |
| Light | |
| First lit | 1914 |
| Focal height | 42 feet (13 m)[2] |
| Lens | Fourth order Fresnel lens (original), 9.8-inch (250 mm) Tideland Signal acrylic optic[6][7] (current) |
| Range | 12 nautical miles (22 km; 14 mi) |
| Characteristic | Fl R 5 secs |
Alpena Light | |
| Area | less than one acre |
| Architect | US Lighthouse Service |
| MPS | Light Stations of the United States MPS |
| NRHP reference No. | 06000197[8] |
| Added to NRHP | March 29, 2006 |
The Alpena Light, also known as the Thunder Bay River Lighthouse[9] or Alpena Breakwater Light,[6] is a lighthouse on Lake Huron near Alpena, Michigan.[10][11] Standing on the north breakwater of Alpena Harbor, the light marks the entrance to the Thunder Bay River from Thunder Bay.[6] The current lighthouse, built in 1914, replaced earlier wooden structures which had been in use since 1877 and 1888.[12] The current light is a weather-protected structure on a steel frame. It was added to the National Register of Historic Places in 2006, and the state inventory list the same year.[13]
- ^ Database, Pepper, Terry. "Seeing the Light: Lighthouses on the western Great Lakes". Archived from the original on 2008-01-30.
- ^ Pepper, Terry. "Database of Focal Heights". Seeing the Light. terrypepper.com. Archived from the original on 2008-08-30. Retrieved 2009-11-08.
- ^ "Michigan Lighthouse fund, Alpena Light". Archived from the original on 2009-01-06. Retrieved 2008-08-14.
- ^ Michigan Lighthouse Conservancy, Alpena Pier Light.
- ^ a b c Terry Pepper, Seeing the Light, Alpena Breakwater Light.
- ^ But see, claimed "190 mm plastic optic." U.S. Lighthouses, Alpena Light.
- ^ "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
- ^ Thunderbay National Marine Sanctuary, Thunder Bay River Lighthouse.
- ^ Amateur Radio Lighthouse Society, Alpena (Lake Huron) Light ARLHS USA-007.
- ^ Amateur Radio Lighthouse Society, World List of Lights (WLOL).
- ^ Beacons in the Night: Michigan Lighthouse Chronology, Clarke Historical Library, Central Michigan University.
- ^ National Park Service, Maritime Heritage Program, Inventory of Historic Light Stations - Michigan Lighthouses, Alpena Light.