Stream Condition Index

Summary
This is a biological index, composed of indicators & metrics representing the condition of the benthic invertebrate communities living in streams and rivers. The presence and abundance of aquatic plants and animals can provide an indication of waterway and landscape disturbance, geomorphic conditions, appropriate water availability, and water quality. Comparing the measured presence (observed) of native species or groups to the expected presence of these species or groups is one way of measuring watershed and waterway conditions.