Boulder Canyon Trail Closure Due to Rockfall Mitigation Work — Niwot Area

Boulder Canyon Trail Closure Due to Rockfall Mitigation Work — Niwot Area

Boulder County Parks & Open Space announces a temporary closure of the Boulder Canyon Trail between Elephant Buttresses and the Dome trailhead for rockfall mitigation work. Crews will be scaling loose rock and installing mesh netting along a 400-foot section of cliff face above the trail. The closure is expected to last approximately three weeks, weather permitting.

Water quality monitoring at 15 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2025. The Public Health publishes quarterly water quality reports on the Boulder County website.

Residents in the Boulder area should note that service boundaries may differ from city limits. For properties in unincorporated Boulder County, contact Public Health at (303) 441-4452 to verify eligibility and requirements.

Timeline

For questions about this program, contact Sarah Mitchell at Public Health: (303) 441-4452 or email Public [email protected]. Office hours are Monday through Friday, 8:00 AM to 4:30 PM. Walk-in services are available at the Boulder office without an appointment.

Historical context: Boulder County was established in 1861 and covers 741 square miles of diverse terrain from the Great Plains to the Continental Divide. The county’s population of approximately 330,000 residents is served by 2091 county employees across 42 departments and offices.