Cowanesque River at Lawrence, PA (COWN 1.0)

• Water Quality: Temperature exceeded water quality standards in summer 2009.
• Macroinvertebrate IBI Score: NA
• Habitat Assessment: NA
• Discussion: Water quality showed no major change, but the Water Quality Index value remained consistently among the worst of all Pennsylvania-Maryland Interstate Streams.
• Other Notes: Macroinvertebrate collection and habitat assessments are not performed at SUSQ 10.0 due to deep waters and lack of riffle habitat. This site is only ten miles upstream of where the Susquehanna River empties into the Chesapeake Bay near Havre de Grace, Md. The SUSQ 10.0 sampling site is located below the Conowingo hydroelectric dam, the last of four major power generating dams on the lower Susquehanna River.