Biological monitoring, or biomonitoring, is sometimes favored over chemical testing because biological assessment results indicate stress or changes in water quality over periods of time, rather than just a "snap shot in time" of the chemical test. For instance, dragonfly larvae, indicators of good water quality, may develop over five years before emerging from the water as an adult. Macroinvertebrates are reliable indicators of water quality and habitat conditions in a stream.
Haw River Watch: Macroinvertebrate Identification
Biological Monitoring Reports
2015 Biological Monitoring of Chapel Hill Streams
2014 Biological Monitoring of Chapel Hill Streams
2013 Biological Monitoring of Chapel Hill Streams
2013 Biological Monitoring of Carrboro Streams
2012 Biological Monitoring of Chapel Hill Streams
2011 Biological Monitoring of Chapel Hill Streams
Selected Physical, Chemical, and Biological Data for 30 Urbanizing Streams in the North Carolina Piedmont Ecoregion, 2002—2003
Selected water-quality and biological characteristics of streams in some forested basins of North Carolina, 1985-88
Selected Physical, Chemical, and Biological Data Used to Study Urbanizing Streams in Nine Metropolitan Areas of the United States, 1999–2004
Examining the recovery of Bolin Creek following the drought of 2002 : effects of urbanization on resilience, by Michael Thure Caire. UNC Honors Thesis.
Effects of land use on stream macrobenthic communities and decomposition. By Rhiannon Leigh Rognstad. UNC Honors Thesis.
Ecological heterogeneity in streams: geomorphic and hydrologic influences on macroinvertebrate community structure. By Jeffrey D. Muehlbauer. UNC Thesis.