List of longest rivers of Canada
Nine rivers in this list cross international boundaries or form them. Four—the Yukon, Columbia, Porcupine, and Kootenay—begin in Canada and flow into the United States. Five—the Milk, Pend d'Oreille, Saint Lawrence, Red, and Saint John—begin in the United States and flow into Canada. Of these, the Milk and the Kootenay cross the international border twice, the Milk leaving and then re-entering the United States, the Kootenay leaving and then re-entering Canada. The drainage basins of these nine rivers extend into both countries; in addition, the drainage basins of six others—the Fraser, Assiniboine, South Saskatchewan, Saskatchewan, Nelson, and Winnipeg—extend into the United States even though their main stems flow entirely within Canada.
Great Recycling and Northern Development Canal
In his GCNA proposal, Kierans asserts that experience in the Netherlands demonstrates that a large new freshwater source can be created in Canada's James Bay by collecting runoff from many adjacent river basins in a sea level, outflow-only dyke-enclosure. The project would capture and make available for recycling the entire outflows of the La Grande, Eastmain, Rupert, Broadback, Nottaway, Harricana, Moose, Albany, Kapiskau, Attawapiskat and Ekwan rivers.
Moreover, Kierans claims that the California Aqueduct proves that runoff to James Bay can be beneficially recycled long distances and over high elevations via the GRAND Canal. The GCNA would stabilize water levels in the Great Lakes and St. Lawrence River and improve water quality. The GRAND Canal system would also deliver new fresh water from the James Bay dyke-enclosure, via the Great Lakes, to many water deficit areas in Canada and the United States. The project was estimated in 1994 to cost C$100 billion to build and a further C$1 billion annually to operate, involving a string of nuclear reactors and hydroelectric dams to pump water uphill and into other water basins.