The municipality of Clallam County encompasses an area of 1,752 square miles that is drained by thousands of miles of streams. It also maintains a road network that includes approximately 850 miles of asphalt and gravel roads. These roads cross numerous drainages that support anadromous and resident trout populations. Many of these roads were built prior to the enactment of the Hydraulic Act and as a result their stream crossing structures do not meet modern fish passage criterion. This project will identify all stream crossings within county jurisdiction using GIS Tools by watershed. The stream network affected by the road system will also be classified by gradient and confinement criteria within each watershed. This analysis will produce a population of culvert sites and potential stream habitat upstream affected by those crossings. Individual culvert sites will then be field surveyed to assess their impacts to fish passage using the WDFW (2009) level A assessment. From these data a prioritized list of fish passage improvement projects will be generated by watershed and by county ownership. The over-all goal is to identify and replace barrier culverts and to restore unimpeded fish passage to historical spawning and rearing habitat upstream with structures that meet fish passage criteria. This project will help Clallam County and its partners identify those barriers and compete for the resources necessary to correct barriers over time.