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USFS and CSFS Announce Forest Health Survey Results

Bark Beetle Epidemic – 400,000 new acres

The aerial survey results revealed that nearly a half-million new acres were infested in 2010; these are acres that had not previously been affected by the mountain pine beetle epidemic.  The total number of acres impacted by the entire mountain pine beetle outbreak since 1996 in Colorado and southern Wyoming is now 4 million acres.

• The bark beetle infestation grew by 400,000 acres in Colorado and southern Wyoming in 2010.  The bark beetle continues to spread north and east and is now moving rapidly along the Front Range and into ponderosa pine trees.
• Pockets of beetle activity detected in 2009 in low-elevation ponderosa pine stands along the Front Range and into southern Wyoming expanded dramatically in 2010.
• 2010 Aerial Survey Map

Spruce Beetle Outbreaks – 150,000 new acres

• Spruce beetles are most active in southern Colorado and Wyoming where a number of significant wind events caused thousands of acres of fallen trees, making them susceptible to infestation. 
• In 2010, 150,000 new acres of spruce mortality were detected in Colorado and southern Wyoming, which is double that of 2009.

Read the full report at:

Forest Health Aerial Survey Highlights for 2010

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