Boulder Canyon Trail Closure Due to Rockfall Mitigation Work — Follow-Up Report

Boulder Canyon Trail Closure Due to Rockfall Mitigation Work — Follow-Up Report

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.

Colorado state law requires all counties to provide these services to eligible residents. Boulder County exceeds minimum state requirements by offering expanded hours, multilingual support, and online access. In 2025, the county received a state award for excellence in service delivery.

The Heil Valley Ranch open space property encompasses 2,371 acres and features 10 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.

Eligibility

Water quality monitoring at 17 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2025. The Human Services publishes quarterly water quality reports on the Boulder County website.

Safety data from the Lyons area shows 7 reported incidents in the past 12 months, a 17% change from the previous year. The Sheriff’s Office has increased patrols along SH-7 / Ute Highway and added community outreach programs in response to resident feedback.

Background

For questions about this program, contact James Rodriguez at Human Services: (303) 441-3520 or email Human [email protected]. Office hours are Monday through Friday, 8:00 AM to 4:30 PM. Walk-in services are available at the Lyons office without an appointment.