Standard Drainage Area Classification (SDAC) 2003
05U - Nelson
| Code | Sub-sub-drainage areas |
|---|---|
| 05UA | Gunisao |
| 05UB | Head Nelson |
| 05UC | Minago |
| 05UD | Upper Nelson |
| 05UE | Central Nelson - Upper |
| 05UF | Central Nelson - Lower |
| 05UG | Limestone |
| 05UH | Lower Nelson - Mouth |
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