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| watershed | NS | DLS | TS |
|---|---|---|---|
| Monitor location | Niushan (NS) industrial zone | Dalingshan (DLS) mix of commercial and residential | Tongsha (TS) parking lot |
| Drainage area | 6.89 ha | 3.64 ha | 5.12 ha |
| Percentage of impervious area | 74% | 87% | 37% |
| Sewer type | Separated | Separated | Separated |
| Primary land use | Industrial | Commercial | Greening |
| Land slope | 2.80% | 1.10% | 1.50% |
