The streamside corridor, riparian area or zone of influence are terms that describe the natural vegetated area on either side of the stream. It, along with the stream, forms the habitat of the river. It includes vegetation that shades the water, holds the soil in place, adds nutrients to the stream in the form of leaves and during flooding, and provides habitat for streamside wildlife. Estimate as best you can width of the corridor at your site. A description of the presence and type of streamside vegetation provides much information about the stream due to its important role in molding the stream environment.
Vegetation acts as a filter for sediment and pollution coming in from the near land.
It provides habitat for the many creatures that are dependent on and influence the stream. Branches, logs and leaves enter the stream from this region. Vegetation also provides shade, which keeps the watercool. On the data sheet mark all the categories that apply. Either conifers or deciduous bushes less than 20 feet high.