Buckmire Slough Tidal Reconnection Vancouver Lake, Washington

Close collaboration with the Columbia River Estuary Study Taskforce aimed to restore estuary function and wildlife habitat to the Buckmire Slough near Vancouver Lake, Washington. The slough had poor water quality conditions and two large berms blocking fish passage.

An Improved Floodplain Habitat with Fish-Friendly Features

The removal of four in-stream barriers restores full estuarine tidal processes and improves juvenile salmon access to the slough and wetland habitat. Installing two new bridges led to an improved floodplain habitat while placed logs and other low-lying features support native vegetation (e.g., Sedges and Wapato) and prevent juvenile fish from getting stranded. The design includes fish-friendly features, ecological features to support native Wapato, and large wood habitat structures. In developing the design, the Otak team used hydraulic modeling to assess water quality, fish passage conditions, and scour potential at the bridge sites.

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Natural Systems Design
“Otak has always provided me with the opportunity to chart my own course and surround myself with amazing, talented, and interesting people.”

Kevin Timmins

Director of Water & Natural Resources

Environmental Science
“It's important that we make sustainability a priority, starting with staff training that is carried forward and reflected in our daily business practices and projects.”

Jennifer Goldsmith



Professional Registrations

Licensed Geologist: WA Project Management Professional (PMP)
Survey & Mapping
“We have a great team here. We’re all focused on doing good work for our clients. It’s also a fun atmosphere, where we laugh out loud, a lot.”

Jon Yamashita

Director of Surveying