Significance of Headwater Streams and Perennial Springs in Ecological Monitoring in Shenandoah National Park by U S Department of the Interior (Paperback / softback, 2014)
Shenandoah National Park has been monitoring water chemistry and benthic macroinvertebrates in stream ecosystems since 1979. These monitoring efforts were designed to assess the status and trends in stream condition associated with atmospheric deposition and changes in forest health due to gypsy moth infestations.