About

Black Snake Passage, also known as Blacksnake Passage, is a water gap situated in the Thousand Islands region, straddling the border between Canada and the United States. This passage is located between Hill Island in Canada and a small U.S. island within Lake of the Isles. It is part of the municipality of Leeds and Thousand Islands, within the county of Leeds and Grenville, Ontario.

The Thousand Islands region is renowned for its scenic beauty and unique geography, comprising over 1,800 islands in the Saint Lawrence River. Black Snake Passage, identified in Unwin’s Survey around 1874, is one of the many water channels that contribute to the distinctive landscape of the area. While specific historical and ecological details about the passage are limited, its presence highlights the complex waterways that define this part of the Ontario border with the United States.

Island or Feature Name
Black Snake Passage or Blacksnake Passage

Nationality
Canada

Centroid Lat/Long

Two-Minute Box
44^22′ x 75^58′

Location and description
Water gap between Hill Island and small US island in Lake of the Isles; identified in Unwin’s Survey [circa 1874]

Former, informal, or alternate names

Municipality
Leeds and Thousand Is.

County
Leeds and Grenville

Province / State
ONT

Ports?

Book refs

1000islands.co ID #
99

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Data source.