Explanations of EPA Scoring

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Aquatic Uses

1. Exceptional Warm Water Habitat(EWH)
2. Warm Water Habitat(WWH)
3. Cold Water Habitat(CWH)
4. Modified Warm Water Habitat(MWH)
5. Limited Resource Water(LRW)


1. Full Attainment
2. Partial Attainment
3. Non-Attainment

Biological Criteria

1. Index of Biological Integrity(IBI)
2. Invertebrate Community Index(ICI)
3. Qualitative Habitat Evaluation Index(QHEI)
4. Modified Index of Well-being(Mod. Iwb)

Chemical Water Quality Standards

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Last updated: April 7, 2009.