Area Closure and Condition Updates
OSMP makes every attempt to keep this page as up to date as possible. However, some closures and trail advisories are made on an emergency basis for the safety and well-being of our visitors, wildlife and natural resources. Please watch for these signs during your visit.
The types of closures and the dates they are typically closed are listed below, click each for more information:
Upper McClintock temporarily closed May 23, 2013
Boulder Falls Trail to remain closed
Third Elephant Buttress temporarily closed April 20, 2013
Flagstaff Fire Closures - updated November 13, 2012
August 7, 2012 Flagstaff Fire Update
Mallory and Harmon Caves closed year-round, effective Sept. 21, 2010
Dry Creek closure due to non-native New Zealand mudsnails, effective Sept. 21, 2010
No parking along Highway 170 near Doudy Draw and South Mesa Trailheads
Dogs must be on leash from Aug. 15 through Nov. 1 on the following trails because of bear activity:
These areas are frequent foraging locations for bears. Leash restrictions protect dogs and their guardians when there is a high probability of encountering bears, and help avoid disturbing bears while they feed during this critical pre-hibernation period.
Lower Big Bluestem Trail is leash-required year round.
Grassland breeding birds have seen widespread and precipitous declines at a continental scale due to a variety of impacts. OSMP provides habitat for several species of grassland nesting birds including Grasshopper Sparrow, Western Meadowlark, Vesper Sparrow, Horned Lark, Lark Sparrow, and Savannah Sparrow.
The following areas are closed May 1 - July 31:
Grasshopper sparrow nestlings
Female bats locate roosting sites in caves and rock crevices along the foothills, where the pups are raised in maternity colonies. The pups suffer high mortality rates even under normal conditions, so these seasonal closures help ensure they will remain undisturbed by humans during roosting season. Thank you for your cooperation!
Der Zerkle East Face - closed April 1 - Sept. 1 every year
Mallory Cave - closed year-round over white-nose syndrome concerns.
Harmon Cave - closed year-round over white-nose syndrome concerns.
Please help us protect wildlife by:
Respecting all area closures.
Immediately leaving any closure area should you accidentally enter one.
Urging cooperative respect for closures from fellow park users.
Municipal fines are up to $1,000 and jail time up to 90 days.
Follow this link to meet some of the animals protected by these closures.
Bald Eagle nesting closures run from Nov. 1 until July 31.
Cliff Nesting Raptors are protected from Feb. 1 through July 31.
Burrowing Owls are protected March 15 through Oct. 31.
Osprey are protected March 15 through Sept. 10.
Kolb and Coal Creek Property Closure: The Kolb property in the White Rocks area (near 75th and Valmont) and the Coal Creek Property (east of Hwy 93 and near Marshall Lake) are closed temporarily between Nov. 1 and July 31 to protect bald eagle nesting and roosting activity.
Thanks to OSMP visitors and volunteers for supporting these closures and the cliff-nesting raptor program!
Overview Map of OSMP: This map shows all of the cliff nesting raptor closures from Feb. 1 - July 31.
The following areas are closed every year from Feb. 1 - July 31 to protect cliff nesting raptors:
Mickey Mouse Wall - Mickey Mouse Wall and all terrain within 100 yards of the wall closed, this includes South Tower, North Tower, Central Tower, Ship's Prow, Wall of Shiva's Dance, The Gargoyle, the East Face and Cryptic Crags.
Back Porch, The Box - The Back Porch and The Box are closed.
Bear Creek Spire - Bear Creek Spire is closed.
Flagstaff North - A portion of the northside of Flagstaff Mountain is closed.
The entire Third Flatiron - Including Queen Anne's Head, W.C. Fields Pinnacle, 1911 Gully and the Ghetto, the East Bench & West Bench, the East & West Ironing Boards, The Fin, Green Thumb, and Jaws are closed. Royal Arch Trail is open.
Skunk Canyon - The Skunk Canyon drainage west of the Mesa Trail, starting at and including the Second Ridge is closed, including Ridge Two, Ridge Three, Ridge Four, the Achean Pronouncement, the Dreadnaught, and the South Ridge of Green Mountain known as the Sacred Cliffs.
North side of Fern Canyon - The area north of the Fern Canyon Trail, including the Nebel Horn Ridge, East Ridge, the Goose and the Goose Eggs is closed. Fern Canyon Trail is open.
The Sphinx - The Sphinx is closed.
Shadow Canyon - Including Devil's Thumb Ridge, Towers of the Moon, and Jamcrack Spire are closed. The Maiden is open with access from the east side only. Diamond Head and The Matron are now open. The upper part of the Shadow Canyon Trail is closed from the Flagstaff Fire, please review the fire closure map.
Closure lifted 5/15/13 - Mt. Sanitas Ridge - The Sanitas closure has been lifted for 2013.
Closure lifted 5/14/13 - Lefthand Canyon Palisades - The Lefthand Palisades closure has been lifted for 2013.
Closure lifted 5/8/13 - Gregory Canyon Amphitheater The Amphitheater closure has been lifted for 2013.
These areas are closed to protect nesting burrowing owls every year from March 15 - Oct. 31:
Mesa Sand and Gravel
The Axelson area near the Boulder Reservoir is closed to protect nesting Osprey every year from March 15 - Sept. 10:
New Zealand Mudsnails:
Dry Creek Closure to all access for New Zealand Mudsnails
Boulder Creek closure to all access for New Zealand Mudsnails
Last Updated on Thursday, 23 May 2013 09:44