Standard Drainage Area Classification (SDAC) 2003
- 02 - St. Lawrence
- 02C - Northern Lake Huron
- 02CA - Garden
- 02CB - Upper Mississagi
- 02CC - Lower Mississagi
- 02CD - Serpent
- 02CE - Spanish
- 02CF - Vermilion, Ontario
- 02CG - Manitoulin Island
- 02CH - Killarney
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