Round Island Light (St. Mary's River)

Last updated September 16, 2025

Round Island Light
Tower


Location	Chippewa County, United States
Coordinates	46°06′31″N84°01′11″W / 46.108667°N 84.019833°W / 46.108667; -84.019833
Construction	concrete (foundation), wood (tower)
Markings	Grey (tower), white (trim), black (cupola)

Light
First lit	1892
Deactivated	1922

Round Island Light is a lighthouse on Round Island in the St. Marys River. It is in Michigan, about a mile from the Ontario border.^[1]

History
Getting there
Notes

History

The St. Mary's River flows from Lake Superior to Lake Huron. After the locks at Sault Ste. Marie were built in 1855, traffic on the river gradually increased and in 1891 Congress appropriated $30,000 for construction of lights along the river. Round Island Light was put into service in 1892.

It was discontinued in 1922 in favor of a steel structure to the north of the house. ^[2]

Getting there

A private boat is the best way to see this light close up.

Round Island Light is one of over 150 past and present lighthouses in Michigan. Michigan has more lighthouses than any other state. See Lighthouses in the United States.^[3]

Notes

↑ NOAA chart 14882
↑ "Round Island (St. Marys River), MI". Lighthouse Friends. Retrieved 28 November 2022.
↑ See Map of Michigan Lighthouse Archived 2008-01-14 at the Wayback Machine in PDF Format. See also Detroit News, Interactive map on Michigan lighthouses.

v t e Lighthouses in Michigan
Main: List of lighthouses in the United States
Northern Upper Peninsula	Au Sable Big Bay Point Copper Harbor Copper Harbor Front Range Crisp Point Eagle Harbor Eagle Harbor Range Lights Eagle River Fourteen Mile Point Grand Island East Channel Grand Island Harbor Rear Range Grand Island North Grand Marais Range Lights Granite Island Gull Rock Huron Island Isle Royale Manitou Island Marquette Breakwater Outer Marquette Harbor Mendota (Bete Grise) Munising Front Range Munising Rear Range Ontonagon Ontonagon Harbor West Breakwater Portage River (Jacobsville) Passage Island Presque Isle Harbor Breakwater Light Rock Harbor Rock of Ages Sand Hills Sand Point Light (Baraga) St. Martin Island Stannard Rock Thunder Bay Island Whitefish Point
Southern Upper Peninsula	DeTour Reef Lansing Shoals Manistique East Breakwater Martin Reef Menominee Pier Minneapolis Shoal Naubinway Island Peninsula Point Poverty Island Sand Point Seul Choix Squaw Island St. Martin Island
St. Mary's River	Frying Pan Island Pipe Island Point Iroquois Round Island Light (St. Mary's River) Six Mile Point Range Rear Winter Point Range Front
Portage River/Ship Canal	Keweenaw Waterway Lower Entrance Keweenaw Waterway Upper Entrance Portage Lake Rouleau Point Range Front and Rear Lights
Straits of Mackinac	Bois Blanc McGulpin Point Old Mackinac Point Round Island Round Island Passage St. Helena Island Wawatam
Western Lower Peninsula	Beaver Island Harbor Beaver Island Head Big Sable Point Cedar River Charlevoix Charlevoix South Pier Frankfort Frankfort South Range Grand Haven North Pierhead Grand Haven South Pierhead Entrance Grand Haven South Pierhead Inner Grand Traverse Grays Reef Holland Harbor Ile Aux Galets Little Sable Point Little Traverse Ludington Manistee Pierhead Manning Memorial Mission Point Mission Point (1933) Muskegon Breakwater Muskegon Pier North Manitou Shoal Pentwater North Pierhead Pentwater South Pierhead Point Betsie Portage Lake South Fox Island South Haven South Manitou Island St. Joseph North Pier Inner St. Joseph North Pier Outer Waugoshance White River White Shoal
Eastern Lower Peninsula	Alpena Caseville Harbor Charity Island Cheboygan Crib Cheboygan River Front Range Detroit River Fort Gratiot Forty Mile Point Fourteen Foot Shoal Gibraltar Gravelly Shoal Harbor Beach Lake St. Clair Mariners Memorial Middle Island Miller Memorial New Presque Isle Old Presque Isle Peche Island Rear Range Poe Reef Pointe aux Barques Port Austin Port Sanilac Saginaw Bay Saginaw River Rear Range Spectacle Reef St. Clair Flats Front and Rear Range Light Sturgeon Point Tawas Point Thunder Bay Island Tri-Centennial Light of Detroit William Livingstone Memorial Windmill Point
Historical (lost) lights	Au Sable North Pierhead Belle Isle Clinton River Ecorse Ecorse Range Rear Gibraltar Grassy Island Grassy Island North Channel Range Lights Grassy Island South Channel Range Lights Grosse Ile North Channel Range Lights Grosse Ile South Channel Range Lights Harwood Point East Range Front Kalamazoo River Mama Juda Mama Juda Range Front Manistee Main Middle Lake George Monroe Pier New Buffalo North Manitou Island Saginaw Bay Sand Beach North Entrance East Squaw Point St. Mary's River Lower Range Front Vidal Shoals Channel Range Front and Rear Lights Windmill Point Range Front and Rear Lights
Related	Lightship Huron List of lifesaving stations in Michigan Wixom Lake, Musselman Island lighthouse

This article relating to a United States lighthouse is a stub. You can help Wikipedia by expanding it.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

Round Island Light (St. Mary's River)

Contents

History

Getting there

Notes