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.
Tar Sands Healing Walk
Canada is home to two of the three largest dams in the world. They are used to hold back toxic sludge from the oil sands. 11 million litres of toxic wastewater seep out of the tailing pits into the boreal forest and Athabasca river every day. That is 4 billion litres a year. Air pollutant guidelines in Alberta are less stringent than international standards. Despite that, air quality objectives were exceeded 1,556 times in 2009, up from 47 times in 2004.