CWA Section 305(b)
Biennial reporting required by the Act to describe the quality of the Nation’s surface waters, to serve as an evaluation of progress made in maintaining and restoring water quality, and describe the extent of remaining problems.
Disturbance
Any activity of natural or human causes that alters the natural state of the environment and its attributes and which can occur at or across many spatial and temporal scales.
Life History
How and where a fish or macroinvertebrate species forages, ages, grows, and reproduces throughout its life. Habitat specialist likely have strong preferences for specific habitat features depend on life history stage. For example, some fish species prefer to nest over pebble sized substrates while other may lay eggs on the undersurfaces of large rocks or boulders.