Laurentian Divide

The Laurentian Divide or Northern Divide is a continental divide in North America dividing the direction of water flow in eastern and southern Canada from that of the northern Midwestern United States. The Laurentian Divide separates the river systems that flow northwards to the Arctic Ocean and Hudson Bay from those that flow southwards to the Atlantic Ocean, Caribbean Sea and Gulf of Mexico. The Laurentian Divide runs from its junction with the Great Divide at Triple Divide Peak in Glacier National Park in Montana, and terminates at Cape Chidley on the Labrador Sea.

• http://en.wikipedia.org/wiki/Laurentian Divide