Lacy Island is one of the many uninhabited Canadian arctic islands

Canadian Arctic Archipelago

The Canadian Arctic Archipelago, also known as the Arctic Archipelago, is a Canadian archipelago north of the Canadian mainland in the Arctic...

 in Qikiqtaaluk Region, Nunavut

Nunavut

Nunavut is the largest and newest federal territory of Canada; it was separated officially from the Northwest Territories on April 1, 1999, via the Nunavut Act and the Nunavut Land Claims Agreement Act, though the actual boundaries had been established in 1993...

. It is located at the confluence of Hudson Strait

Hudson Strait

Hudson Strait links the Atlantic Ocean to Hudson Bay in Canada. It lies between Baffin Island and the northern coast of Quebec, its eastern entrance marked by Cape Chidley and Resolution Island. It is long...

 and the Labrador Sea

Labrador Sea

The Labrador Sea is an arm of the North Atlantic Ocean between the Labrador Peninsula and Greenland. The sea is flanked by continental shelves to the southwest, northwest, and northeast. It connects to the north with Baffin Bay through the Davis Strait...

. The island, a member of the Button Islands

Button Islands

The Button Islands are located in the Canadian Arctic Archipelago in the territory of Nunavut. They are surrounded by Ungava Bay, Hudson Strait, Labrador Sea, and they are on the north side of Gray Strait. The Button Islands measure ....

, is situated in the northeast part of the grouping.

Other islands in the immediate vicinity include Goodwin Island

Goodwin Island

Goodwin Island is one of the many uninhabited Canadian arctic islands in Qikiqtaaluk Region, Nunavut. It is located at the confluence of Hudson Strait and the Labrador Sea.The island, a member of the Button Islands, is situated west-northwest of Lacy Island...

, MacColl Island

MacColl Island

MacColl Island is one of the many uninhabited Canadian arctic islands in Qikiqtaaluk Region, Nunavut. It is located at the confluence of Hudson Strait and the Labrador Sea....

, Lawson Island

Lawson Island

Lawson Island is one of the many uninhabited Canadian arctic islands in Qikiqtaaluk Region, Nunavut. It is located at the confluence of Hudson Strait and the Labrador Sea....

, Erhardt Island

Erhardt Island

Erhardt Island is one of the many uninhabited Canadian arctic islands in Qikiqtaaluk Region, Nunavut. It is located at the confluence of Hudson Strait and the Labrador Sea. The island has an elevation of above sea level....

, and Observation Island

Observation Island (Nunavut)

Observation Island is one of the many uninhabited Canadian arctic islands in Qikiqtaaluk Region, Nunavut. It is located at the confluence of Hudson Strait and the Labrador Sea....

.

Geography

Lacy Island has the highest mount of all the Button Islands, rising to 290 m (951.4 ft) above sea level

Above mean sea level

The term above mean sea level refers to the elevation or altitude of any object, relative to the average sea level datum. AMSL is used extensively in radio by engineers to determine the coverage area a station will be able to reach...

. The island is square in shape and it offers a sheltered landing area on its southwest side.