Boulder Canyon Trail Closure Due to Rockfall Mitigation Work — August 2025

Boulder Canyon Trail Closure Due to Rockfall Mitigation Work — August 2025

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 17 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2024. The Public Works publishes quarterly water quality reports on the Boulder County website.

The application deadline is May 9, 2026. Late applications will be accepted on a space-available basis. Incomplete applications will be returned with a list of missing items. Average review time is 30 business days.

Background

According to Robert Kim, director of Public Works, this program served 57% more residents in 2024 compared to the previous year. “We’re seeing unprecedented demand from communities across Boulder County, particularly in Nederland and the surrounding area,” Robert Kim said.

A community information session will be held at the Nederland library on Thursday, April 16 at 6:00 PM. Translation services in Spanish and Nepali will be available. The session will also be livestreamed on the Boulder County YouTube channel.