Our Mission

Boulder Open Space Conservancy is a non-profit organization that partners with the City of Boulder Open Space and Mountain Parks department to promote and enhance the ecological resilience of our public lands to climate change through sponsorship of conservation projects and community education, for the benefit of all current and future generations of Boulder citizens and visitors.

BOSC was established in 2017 through a public-private partnership with the City of Boulder Open Space & Mountain Parks department to leverage public resources with private philanthropy to fulfill its mission.

This partnership is a unique collaboration of two equal and independent entities: OSMP and the community nonprofit BOSC. Each will bring the shared goal of better fulfilling the charter for OSMP with mutual trust & respect, diverse skills, and strengths.

To ensure that our open space is as it was then, as it is now, and as it will be …forever open.
(Click on the Flatirons to play video)

Program Pillars

Connecting Youth with Nature

Providing experiences and places for our youth to become inspired by nature and develop future stewards of the natural world.

Climate Resilience and “Re-Wilding” our Public Lands

Restoration, preservation and enhancement of ecosystems to support plant and animal communities.

Responsible Recreation and Stewardship

Supporting world-class recreation experiences on our public lands through equitable access with trail construction and maintenance, trailhead enhancements and improved visitor amenities.

Latest News


Taco Fest Volunteer Sign-Up Now Open!

Volunteer at Boulder Taco Fest in support of Boulder Open Space Conservancy! Taco Fest...


City Receives $1.1 Million Grant For Trail Improvements on Mount Sanitas!

Boulder Open Space Conservancy is proud to be the non-profit partner of...


Support BOSC at Boulder Taco Fest!

SAVE THE DATE for the tastiest event in Boulder of the summer!...


Join BOSC & OSMP at BIFF on Friday 3/1 for “Wilding” and Call2Action Panel

Boulder Open Space Conservancy is excited to announce our partnership with Boulder...

About BOSC

Boulder's Open Space is more than a gift. It's our legacy.

The legacy of Boulder’s Open Space dates back over a century, when, in February of 1898, the Texas-Colorado Chautauqua Association and the City of Boulder entered into an agreement to locate the Chautauqua near Boulder. A city bond election was held in April of that same year, and the necessary bonds and expenditures were approved to purchase the land and build the first buildings. The following year, Congress approved the allocation of 1,800 acres of mountain backdrop/watershed, extending from South Boulder Creek to Sunshine Canyon.

In July 1959, the creation of the Blue Line restricted water lines from being extended beyond an elevation of 5,750 feet. In November of 1967, Boulder made history by passing the nation’s first voter-approved sales tax for open space and the creation of the Greenbelt. Another critical vote was passed when, in 1971, a 55-foot building height limit was set, ensuring views of the foothills and Flatirons will always endure. A historic preservation code was passed in 1974 and a residential growth management ordinance in 1976. Today, Boulder has preserved the largest per capita of open space in the country—over 45,000 acres and 148 miles of trails within the city. With your help, we will continue this legacy and keep Boulder Open Space forever open.


Make A Gift to Support Your Boulder Open Space Conservancy

When you make a gift of donation to Boulder Open Space Conservancy, your gift will:

  • support youth connection to nature, fostering future stewards of the Earth and Boulder’s open spaces
  • design and construct new discovery areas, interpretive trails, and eco-healing areas
  • repair and maintain existing trails
  • restore habitat along creeks and streams
  • enhance ecosystems and increase resilience to stressors
  • build high-quality visitor facilities
  • build accessible facilities for people with disabilities, Latino families, and children.

Give back to Boulder’s iconic open space and join the legacy.

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