A muddy trail winding through green hills is blocked by a small mudslide cutting across it

Alerts and Closures

Know Before You Go

Before visiting the preserves, please check this page for notices, closures and safety advisories.

To report an incident or issue such as obstructions on the trail at an Open Space Authority preserve, please Contact Us and select “Trail/preserve questions.”

To report a fire, medical emergency or suspicious activity at an Open Space Authority preserve, please call 911 immediately.

Alert Level	Preserves	Description
Trail alert	Máyyan 'Ooyákma – Coyote Ridge	Butterfly Pass required in Habitat Protection Area Butterfly Pass required in Habitat Protection Area. Get yours here.
Trail alert	Sierra Vista	Aquila Trail one-way Visitors must travel counterclockwise around Aquila Trail
Trail closed	Máyyan 'Ooyákma – Coyote Ridge	Habitat Protection Area Closed Mondays and Tuesdays To protect sensitive species, the Habitat Protection Area (Serpentine Spring, Tule Elk, and Bay Checkerspot Trails) are closed every Monday and Tuesday.
Trail alert	Coyote Valley	Arrowhead Trail one-way for bikes Bikes must travel one-way around the Arrowhead Loop Trail. January 2025: Bikes travel counterclockwise. February 2025: Bikes travel clockwise.