Old fir engraver caused mortality surrounds one spot of new fir engraver activity. Only the active spot would be recorded in the 2018 survey data. Seen from Road 115 near Blewett Pass, Washington. Aerial Survey Program Calibration and Conformity field training.

For more about the Region 6 aerial survey program see: www.fs.usda.gov/detail/r6/forest-grasslandhealth/insects-...

Photo by: Justin Hof
Date: June 14, 2018

Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection.
Source: Aerial Survey Program collection.

Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth

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