Isthmus of Chignecto

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The Isthmus of Chignecto is an isthmus bordering the Maritime provinces of New Brunswick and Nova Scotia which connects the Nova Scotia peninsula with North America.

The isthmus separates the waters of Chignecto Bay, a sub-basin of the Bay of Fundy, from those of the Northumberland Strait, an arm of the Gulf of St. Lawrence. The isthmus is generally acknowledged to stretch from its northerly point at an area in the Petitcodiac River valley near the city of Dieppe, New Brunswick to its southerly point at an area near the town of Amherst, Nova Scotia. At its narrowest point between Amherst and Tidnish, the isthmus measures 24 kilometres wide.

It has been reported that if global warming causes sea levels to rise, this area will flood, turning Nova Scotia into an island.