Marshall Barrows

Marshall leads our office’s monitoring and evaluation efforts for the Clackamas River Bull Trout Reintroduction Project. He is responsible for developing study plans, designing sampling protocols, coordinating and implementing sampling efforts, producing annual reports and presenting our findings to stakeholders. Marshall leads an effort to evaluate a non-native Brook Trout population in a tributary to the Walla Walla River and assess the threat it poses to resident ESA-listed Bull Trout populations. In addition, he contributes his expertise to Bull Trout workgroups in the Walla Walla and Clackamas River Basins.

Program: Natural Population Assessment

Current Projects:

1. Monitoring and assessing the recently-established Bull Trout population in Pinhead Creek as part of the Clackamas River Bull Trout Reintroduction Project in the Willamette Basin

2. Monitoring and assessing the Bull Trout spawning populations in the North Fork Lewis River in the Lewis River Basin

Past Projects: 

1. Monitored and assessed migratory Bull Trout movement patterns, distribution, connectivity and habitat use in the Walla Walla River sub-basin

2. Monitored Bull Trout populations of the Mainstem Columbia and Snake rivers.

3. Examined factors limiting Columbia River Gorge Chum Salmon populations downstream of Bonneville Dam.

4. Analyzed Steelhead spawning ground substrate on seven tributaries to the Wind River in the Gifford Pinchot National Forest near Carson, WA. (US Forest Service).

5. Monitored out-migrant Pacific salmonid smolts on the Snake River and Columbia River. (Army Corps of Engineers).

6. Restored drained wetlands for the Chase Lake Prairie Project 

Background:

Before coming to the CRFWCO, Marshall worked for the US Forest Service, US Army Corps of Engineers and the US Fish and Wildlife Service at Chase Lake National Wildlife Refuge.

At CRFWCO Since: 2000