| Land Cover | West Fork Knapp Creek | Bass-Stevens Creek | Swamp Creek | Milwaukee River |
| Developed | 3.8 | 5.6 | 1.9 | 79.9 |
| Barren Land | 0.0 | 0.0 | 0.0 | 0.1 |
| Forest | 63.9 | 3.4 | 49.4 | 5.5 |
| Herbaceous/Shrub | 14.3 | 22.5 | 7.6 | 2.5 |
| Cultivated Crops | 18.0 | 67.8 | 0.1 | 4.4 |
| Wetlands | 0.1 | 0.7 | 39.0 | 6.0 |
| Water | 0.0 | 0.0 | 2.1 | 1.6 |