Aquatic insects (and other stream-bottom macro-invertebrates) are a particularly good measure of water quality since many are pollutant sensitive, are readily collected, and can be rapidly identified. Aquatic insects spend a lifecycle in the same stream section, so the species present (or absent) reveal a water quality history that a single water sample taken at one point in time cannot.
FRWA conducts macroinvertebrate sampling days in September through November to monitor streams of the watershed on a rotating basis. Volunteers are recruited and trained to do the sampling in a one-day workshop. We use the sampling method in “Riffle Bioassessment by Volunteers” program (RBV) developed by CT DEEP. Results are available on DEEP’s website.
Benthic Aquatic Macroinvertebrate Presentation Series