In descending order, by date published.
Streams are an important part of the landscape. Streams transport water, sediment and energy; provide habitat for aquatic life and support terrestrial life; provide a place for recreation; and in many cases serve as a water supply. The health of streams---or their ability to perform these important functions---is dependent on the conditions of the watersheds which they drain. Changes in land use within a watershed can affect a stream's health.
Stream restoration is the re-establishment of the structure (dimension, pattern, and profile) and function (transport of water, sediment, and nutrients; habitat provision) of a degraded stream as closely as possible to pre-disturbance conditions.