Interior Columbia Basin Office

Map of interior Columbia Basin with area office locations

The Interior Columbia Basin Office is located in Portland, with satellite teams in Ellensburg, Washington; La Grande, Oregon; Moscow, Boise, and Salmon, Idaho. Our responsibilities focus on protecting species and their habitats upstream of Bonneville Dam, into the upper reaches of the Columbia and Snake rivers in Washington, Oregon, and Idaho. We work to protect species listed under the Endangered Species Act by evaluating the impacts of proposed federal actions, developing and implementing recovery plans, seeking conservation partnerships with local governments and landowners, and ensuring safe fish passage through federal and some private dams.

Assistant Regional Administrator

The Interior Columbia Basin Office is led by Michael Tehan, Assistant Regional Administrator
Phone: 503.231.2224

Columbia Hydropower Branch

The Columbia Hydropower Branch is led by Ritchie Graves
Phone: 503.231.6891

Columbia Basin Branch

The Columbia Basin Branch is led by Dale Bambrick
Phone: 509.962.8911 x221

Snake Basin Office

The Snake Basin Office director position is currently open

Northern Snake Branch

The Northern Snake Branch is led by Ken Troyer
Phone:  208-378-5692

Southern Snake Branch

The Southern Snake Branch is led by Bill Lind
Phone:  208-378-5697