The Great Recycling and Northern Development Canal of North America or GCNA is a water management proposal designed by Newfoundland engineer Thomas Kierans to alleviate North American freshwater shortage problems. The GCNA, which relies upon water management technologies used in the Zuider Zee and California Aqueduct, has been promoted by Kierans since 1959. This plan arose as water quality issues threatened the Great Lakes and other vital areas in Canada and the United States. Kierans proposes that to avoid a water crisis from future droughts in Canada and the United States, in addition to water conservation, acceptable new fresh water sources must be found. The premise of the GCNA is that fresh water run-off from natural precipitation be collected in James Bay by means of a series of outflow-only, sea level dikes-constructed across the northern end of James Bay. This would capture the fresh water before it mixes with the salty water of Hudson Bay.

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