Columbia Basin Management
The Columbia Basin Management Area (CBMA) comprises nearly 112,000 acres of working forestlands on the Washington-Oregon border.
The area includes the Columbia Basin Timberlands—managed and owned by Green Diamond—and the Three Rivers area, which Green Diamond has managed since it was acquired by Twin Creeks Timber (TCT) in 2021. Scattered along the Cascade Crest, the land offers views of Mount Adams and Mount Hood and is situated near prominent river corridors, including the Columbia and White Salmon. Tree species include Douglas fir, ponderosa and lodgepole pine, true firs and western larch.