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The Colville - Rocky II Timber Sale

Stand of treesStudy Description: The study team evaluated treatments intended to meet a range of ecological objectives: (1) increase structural diversity, (2) decrease forest health risk, (3) improve wildlife habitat, (snags for cavity nesting birds and winter range for White-tail deer); and (4) improve stand aesthetics (promote development of large diameter western larch).


Silviculture and Ecology: Research in this area simulated stand development over 150 years. Results indicated that without active management stands would develop slowly and might never meet some desired future conditions.

Forest Operations: Examined actual costs of harvesting with cut to length systems on the Rocky II timber sale and found that harvest costs increase rapidly as average stand diameter drops below 10 inches.


Woodpecker providing nourishment to hatchlings.Wood Product Potential: Conversion studies were conducted for lumber, veneer, oriented strand board (OSB), particleboard, laminated veneer lumber (LVL), and pulp. The quality of products manufactured from small diameter Douglas-fir, larch, lodgepole pine, and white fir trees from densely stocked stands was typically as good as, or better than, the quality of the traditional large diameter resource.

Financial Evaluation:
A software package (FEEMA) was developed to provide Financial Evaluations of Ecosystem Management Activities. This software is intended to help forest managers design financially viable treatments in densely stocked small-diameter stands. The research and software are being used with technical support from Region 6. FEEMA is available on the internet.

Collaborators: The Colville, Idaho Panhandle, and Ochoco National Forests; Boise Cascade Corp.; Riley Creek Lumber; Vaagen Brothers Lumber; Oregon State University; the University of Idaho; the University of Washington; Washington State University; the USDA Forest Service, Forest Products Laboratory and Pacific Northwest Research Station.

Contact: Jamie Barbour PNW Station (503-808-2074); Roger Fight PNW Station (503-808-2004