Wildfires

This figure shows the size of U.S. wildfires over a 25 year period from 1983 to 2008. Wildfire season is now longer on average and increases in wildfire frequency have been greatest in mid-elevation, Northern Rockies forests where land use histories have little effect on fire risks. (Westerling, 2006)

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Source: USGCRP/National Interagency Fire Center