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United States Forest Service Closure Announcement

Due to the extreme fire danger and complementary to the United States Forest Service closure announcement, Boulder County Parks & Open Space has closed the following properties to public use until further notice:

  • Anne U. White
  • Bald Mountain
  • Caribou Ranch
  • Castle Rock climbing area
  • Grassy Top
  • Hall Ranch
  • Heil Valley Ranch
  • Hessie trailhead
  • Mud Lake
  • Reynolds Ranch
  • Sugarloaf Mountain
  • The City of Boulder Open Space and Mountain Parks has also closed the Fourth of July trailhead.

Go to for status of county open space properties and for City of Boulder trail closures. See full statement at