Standard Drainage Area Classification (SDAC) 2003
- 05 - Nelson River
- 05T - Grass and Burntwood
- 05TA - Headwaters Grass
- 05TB - Upper Grass
- 05TC - Central Grass
- 05TD - Lower Grass
- 05TE - Upper Burntwood
- 05TF - Central Burntwood
- 05TG - Lower Burntwood
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