Alder Creek Culvert Passage Project # 1 (formerly Alder Creek #2 Culvert Passage Project) Fish Passage Improvement Project IDBOR_4255Recovery DomainsInterior ColumbiaStart Date02/17/2006End Date08/23/2007StatusCompletedLast Edited12/09/2014 1 - 1 Description This culvert is a barrier to fish passage because of the outfall velocities associated with it. This project will consist of a detailed analysis of the culvert using WDFW protocol and replacing it as necessary.