About

Blockhouse Island, also known locally as Block House Island, is a geographic feature located in the Thousand Islands region on the Canadian side of the border between the United States and Canada. With coordinates at approximately 44° 35′ 14″ N and 75° 40′ 51″ W, it is situated within the city of Brockville, in the county of Leeds and Grenville, Ontario. Originally an island, it has now become a peninsula that plays a crucial role in sheltering the harbor of Brockville.

The City of Brockville, where Blockhouse Island is located, is part of the scenic Thousand Islands region, renowned for its natural beauty and historical significance. The area is known for its dense archipelago of islands in the Saint Lawrence River, making it a popular destination for tourists and nature enthusiasts. Blockhouse Island, with its strategic location, provides a sheltered harbor that is vital for the local community. Despite its modest size and transformation from an island into a peninsula, it remains a notable feature in the region.

Island or Feature Name
Blockhouse (Block House) Island

Nationality
Canada

Centroid Lat/Long
44° 35′ 14″ N – 75° 40′ 51″ W

Two-Minute Box
44^36′ x 75^40′

Location and description
Now a peninsula sheltering the harbor of Brockville, ONT

Former, informal, or alternate names
known locally as ‘Blockhouse Isla

Municipality
City of Brockville

County
Leeds and Grenville

Province / State
ONT

Ports?

Book refs

1000islands.co ID #
107

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Data source.