Hudson Bay drainage basin
The Hudson Bay drainage basin is the drainage basin in northern North America where surface water empties into Hudson Bay and adjoining waters. Spanning an area of about , the basin is almost totally in Canada (spanning parts of the Prairies, central and northern Canada), with a small portion in the United States (in Montana, the Dakotas, and Minnesota). The watershed's headwaters are in part on the Continental Divide of the Americas, and the watershed's connection to the Labrador Sea is at the Hudson Strait's mouth between Resolution Island in the Qikiqtaaluk Region and Cape Chidley on the Labrador Peninsula. On the Continental Divide the basin is bounded at Triple Divide Peak to the south, and Snow Dome to the north.
Geography of Canada
Canada’s two longest rivers are the Mackenzie, which empties into the Arctic Ocean and drains a large part of northwestern Canada, and the St. Lawrence, which drains the Great Lakes and empties into the Gulf of St. Lawrence. The Mackenzie is over in length while the St. Lawrence is over in length. Rounding out the ten longest rivers within Canada are the Nelson, Churchill, Peace, Fraser, North Saskatchewan, Ottawa, Athabasca and Yukon rivers.