This map shows the destruction from Mountain Pine Beetles (in purple) and Spruce Beetles (in orange) within the state of Colorado from 1994-2013.
This map is based on aerial surveillance conducted by the US Forest Service.
This map does not distinguish between undamaged and unsurveyed areas.
(see disclaimer at the bottom)
The video shows the cumulative progression from year to year.
(For more information, click on the bark beetles name above.)
Disclaimer:
Due to the nature of aerial surveys, the data on this map
will only provide rough estimates of location, intensity and the resulting
trend information for agents detectable from the air. Many of the most destructive diseases are not represented on this
map because these agents are not detectable from aerial surveys. The data presented on this map should
only be used as a partial indicator of insect and disease activity, and should
be validated on the ground for actual location and casual agent. Shaded areas show locations where tree
mortality or defoliation were apparent from the air. Intensity of damage is variable and not all
trees in shaded areas are dead or defoliated.
The insect and disease data
represented on this map are available digitally from the USDA Forest Service,
Region Two Forest Health Management group.
The cooperators reserve the right to correct, update, modify or replace
GIS products. Using this map for
purposes other than those for which it was intended may yield inaccurate or
misleading results.
