| Area | Salmon River |
| Topic | Aquatic Inverts: EPT Richness Index Three Salmon River Tribs Fall 1994 |
| Caption: The EPT Richness Index is the number of species at a given location of the orders Ephemeroptera, Plectoptera, and Trichoptera (EPT). These are commonly known as mayflies, stoneflies and caddisflies. The species of aquatic invertebrates within these orders generally have higher water quality requirements than Diptera, Coleoptera or other orders. The Butler Creek fall sample had even more species than spring and represents regional control values for the EPT index. The fall sample of Grant Creek suggests that the watershed may have moderate to high impacts according to the EPT score.Data were collected in 1994 by students at Forks of Salmon School as part of a macroinvertebrate environmental education project. | |
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