Owl Creek Preliminary Design

This project completed data collection and compilation of existing data; field data collection of habitat and channel features; hydrologic and hydraulic analysis via 2D hydraulic modeling; geomorphic analysis to document the processes and disturbances that influence the channel and floodplain conditions; three conceptual alternatives were developed and preferred alternative was selected with stakeholders (WA DNR, WDFW, Hoh Tribe, NGOS, local landowners, etc.); and finally preliminary design drawings and a preliminary design report was completed. Throughout these project steps, we/the sponsor conducted outreach and TUs project manager was in regular communications with partners, organized stakeholder meetings, and stewarded the project through completion.

The goal of the project is to develop preliminary designs for restoration actions that will promote natural stream processes and increase the quantity and quality of spawning habitat for adult chinook, coho, and steelhead, and rearing habitat for juvenile chinook, coho, and steelhead. This project will reconnect the channel with its flooplain by helicopter installation of large wood and rock collars which will reduce incision, collect and sort spawning gravels and reduce scour energy and create habitat for adults and rearing juvenile. The project will also treat invasives and install riparian plantings to allow for further wood recruitment in the future.