File:1976. Drift samples. Nason Creek. Western spruce budworm control project. Okanogan-Wenatchee National Forest, Washington. (35899263032).jpg

Drift samples. Nason Creek. Western spruce budworm control project. Okanogan-Wenatchee National Forest, Washington.

Photo by: Unknown Date: 1976

Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Collection: Region 6, Forest Health Protection slide collection; Regional Office in Portland, Oregon.

Note: "Nason Subunit. This subunit covers Nason Creek and its tributaries of Whitepine, Gill, Roaring, Coulter, and the lower portions of Chiwaukum Creeks. During 1976 30,502 acres of this subunit were treated for budworm control." From: USDA 1977 Draft Environmental Statement Addendum to the Final 1976 Cooperative Western Spruce Budworm Pest Management Plan. USDA Forest Service, Pacific Northwest Region. Portland, Oregon. Page A-11.

For additional information see the project report: 1976 Western spruce budworm control project Washington - Oregon. Forest Service, USDA. Pacific Northwest Region. <a href="https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fsbdev2_026568.pdf" rel="nofollow">www.fs.usda.gov/Internet/FSE_DOCUMENTS/fsbdev2_026568.pdf</a>

Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: <a href="https://www.fs.usda.gov/main/r6/forest-grasslandhealth" rel="nofollow">www.fs.usda.gov/main/r6/forest-grasslandhealth</a>

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