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 closed	Máyyan 'Ooyákma – Coyote Ridge	Habitat Protection Area closed due to wet conditions 11/13/26: Habitat Protection Area (Serpentine Spring, Tule Elk, and Bay Checkerspot trails) CLOSED due to wet trail conditions until further notice.
Preserve alert	Coyote Valley	Equestrian lot reservations Reservations are required for horse trailer parking at Coyote Valley Open Space Preserve. Read more about the pilot program here. To make a free reservation for horse trailer parking at Coyote Valley, please reach out to info@openspaceauthority.org or call (408) 224-7476.
Preserve alert	Coyote Valley	Construction for new public‑access improvement project Construction for public access improvements is underway! Please check for posted notices here and at the preserve. Learn more about the project here.
Preserve alert	Sierra Vista	Mountain Lion Sighting Mountain Lion Sighting - August 27, 2026. Read more here.
Trail alert	Coyote Valley	Arrowhead Trail one-way for bikes Bikes must travel one-way around the Arrowhead Loop Trail. Direction rotates monthly. Click here to view the schedule (PDF)
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.