| Taxa | Impacted | Unimpacted |
| Nematoda (nematodes) | 21 (27.6) | 101 (31.2) |
| Chironomidae (non-biting midges) | 19 (25.0) | 112 (34.6) |
| Baetidae (small minnow mayflies) | 12 (15.8) | 21 (6.5) |
| Plecoptera (stoneflies) | 7 (9.2) | 8 (2.5) |
| Heptageniidae (flatheaded mayflies) | 3 (3.9) | 19 (5.9) |
| Leptophlebiidae (pronggilled mayflies) | 3 (3.9) | 0 (0.0) |
| Oligochaeta (segmented worms) | 3 (3.9) | 42 (13.0) |
| Psephenidae (water pennies) | 3 (3.9) | 5 (1.5) |
| Simuliidae (black flies) | 3 (3.9) | 0 (0.0) |
| Tipulidae (crane flies) | 1 (1.3) | 0 (0.0) |
| Turbellaria (flat worms) | 1 (1.3) | 0 (0.0) |
| Anisoptera (dragonflies) | 0 (0.0) | 1 (0.3) |
| Caenidae (small squaregill mayflies) | 0 (0.0) | 1 (0.3) |
| Elmidae (riffle beetles) | 0 (0.0) | 9 (2.8) |
| Hydracarina (water mites) | 0 (0.0) | 1 (0.3) |
| Isonychiidae (brushlegged mayflies) | 0 (0.0) | 2 (0.6) |
| Pleuroceridae (Pleurocerid snails) | 0 (0.0) | 1 (0.3) |
| Zygoptera (damselflies) | 0 (0.0) | 1 (0.3) |