Active Channel for Fanno Creek, Oregon

Fanno Creek is a tributary to the Tualatin River and flows though parts of the southwest Portland
metropolitan area. The stream is heavily influenced by urban runoff and shows characteristic
flashy streamflow and poor water quality commonly associated with urban streams. This data
set represents the active, wetted channel as derived from light detection and ranging (LiDAR)
data and aerial photographic imagery. The wetted channel boundary is equivalent to the extent
of water observed during a 2-yr high flow event.