DESCRIPTION
The project designs the replacement of Clallam County Road Culvert 80001275 and the Makah Tribal Hatchery water intake/diversion facility 19.0174 on Wright's Creek, a Hoko River tributary. This is NOPLEs 2nd ranked passage correction in the Pysht HUC 10. The culvert is ~180' upstream from the trib confluence with the Hoko River. The hatchery intake is 60' upstream of the county road culvert. The culvert is 67% passable and the diversion 33% passable with excellent spawning and rearing habitat upstream. We expect these two barrier structures in such close proximity combine to create a passage barrier worse than either barrier taken alone. Due to the proximity of the structures, their replacements need to be designed together as any changes in bed elevation driven by either replacement will impact the other structures integrity and potentially it's passability. A left bank tributary to Wright's Creek located just upstream of the County culvert and downstream of the Hatchery diversion leads to excellent off channel rearing. This tributary is oversteepened as a result of road fill placement and stream realignment and too steep to allow fish passage. It also contains culvert #600370 with unknown passability. While designing the crossing and diversion structures we will consider if grades can be adjusted and the tributary culvert removed to restore fish access to this secondary tributary and excellent opportunity for off channel rearing. Project will open .31 miles of habitat.