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Open Space and Mountain Parks

Open Space and Mountain Parks

Boulder's Open Space & Mountain Parks (OSMP) are a very special place. The open space lands teem with native plants and wildlife and are home to threatened and endangered species. They serve as a buffer between Boulder and nearby development. They sustain agriculture uses and add untold benefits to the natural environment - clean air, water, and earth.

The lands shape the urban mosaic of the Boulder Valley and provide citizens with passive recreation opportunities. Trails are used by walkers, hikers, bicyclists, horseback riders, dog walkers and other passive recreational uses.

OSMP Alerts

- Fire ban: Open burning and the sale and use of fireworks are prohibited in unincorporated Boulder County west of Highway 93/Broadway/US 36. With the ban in place, OSMP reminds visitors that it is prohibited to use department provided grills in the western part of the system. More information can be found on Boulder County's website

- Chapman Drive and Tenderfoot Trails closed: The trails are closed into fall 2016 to repair erosion damage on Chapman Drive from the Sept. 2013 floods. View more information about the closure.

Watch out for rattlesnakes: Rattlesnakes, which are an important part of the prairie ecosystem, are emerging from their winter dens. Be on the lookout for them, give them a wide berth and be mindful of where your dog is on the trail.

- Several trails are closed for longer-term projects: Please see the temporary closures page for details on the following closures:

  • East Boulder/White Rocks Trail bridge closed
  • Boulder Falls Trail closed
  • Anemone Hill closed - a portion of the trail is temporarily open for out and back use only

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Featured Projects & Pages

Osprey with a fish it caught

Osprey Cam Live!

View OSMP’s new Osprey camera. Get a glimpse into the lives of a pair of Osprey nesting on OSMP. Watch them begin nesting, feeding and raising their young.

Dog on a trail wearing Voice and Sight Tag

Voice and Sight Tags

Information on how to register for the Voice and Sight Tag Program or renew your dogs' Voice and Sight Tags for 2016.

Firewood Program

Information and instructions to obtain wood that is available to the public and a calendar showing wood availability.

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NIST Protected Area Trails

OSMP is working with NIST to designate a trail system for visitor access and use in the NIST Protected Area.

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