Standard Drainage Area Classification (SDAC) 2003
- 03 - Northern Quebec and Labrador
- 03O - Churchill, Newfoundland and Labrador
- 03OA - Ashuanipi
- 03OB - Smallwood Reservoir
- 03OC - Atikosak and Upper Churchill, Newfoundland and Labrador
- 03OD - Central Churchill, Newfoundland and Labrador
- 03OE - Lower Churchill, Newfoundland and Labrador
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