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
Parking lot closure	Coyote Valley	Coyote Valley equestrian lot half closure 7/16 Half of the Coyote Valley equestrian lot will be closed until 2:00 p.m. on Wednesday, July 16 for special event.
Parking lot closure	Coyote Valley	Coyote Valley equestrian lot half closure 7/10 Half of the Coyote Valley equestrian lot will close at 6:30 p.m. on Thursday, July 10 for special event.
Parking lot closure	Coyote Valley	Coyote Valley equestrian lot closure 7/11 Coyote Valley equestrian lot will close at 7:00 p.m. on Friday, July 11 for special event.
Special hours	Sierra Vista	Sierra Vista early closure - July 4, 2025 Sierra Vista Open Space Preserve AND Sierra Road close at 3:00 p.m. on Friday, July 4.
Preserve closed	Máyyan 'Ooyákma – Coyote Ridge	Habitat Protection Area Closed Mondays and Tuesdays Habitat Protection Area (Serpentine Spring, Tule Elk, and Bay Checkerspot trails) CLOSED Mondays and Tuesdays for scientific research.
Trail alert	Máyyan 'Ooyákma – Coyote Ridge	Butterfly Pass required in Habitat Protection Area FREE Butterfly Pass required in Habitat Protection Area. Get yours here.