New Stream Health Indicator Being Developed

The Chesapeake Bay Program and its partners developed an improved stream health indicator that provides a regional assessment of benthic (bottom-dwelling) macroinvertebrate community health. Benthic data collected in different ways by various natural resource agencies were incorporated into a Benthic Index of Biotic Integrity that rates stream health across the entire 64,000 square miles of watershed that drain into Chesapeake Bay. Overall, the analysis showed that out of 3,291 sampling sites in the watershed, 1,632 of the sites had very poor or poor conditions and 1,056 sites had good or excellent conditions. For further information, visit the Stream Health Indicator website.

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