Best Answer - Chosen by Voters
The combined great lakes. Lake Superior, Lake Huron, Lake Erie, and Lake Ontario. Largest single source would be Lake Superior. 50% 2 VotesOther Answers (5)
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By Superior Lake.
Duh.
0% 0 Votes
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Ontario then Quebec remember the Great lakes are split with the US and we only control a portion of the water reservoirs
25% 1 Vote
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In addition to the Great Lakes, Ontario has thousands of smaller lakes and James Bay.
25% 1 Vote
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Hudson Bay
DUH
0% 0 Votes
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Do glaciers count? If so, it might not be as obvious as lakes and rivers.
0% 0 Votes
