Alum Rock Park

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San Jose, CA
Alum Rock Park

Alum Rock Park was founded in 1872 and is one of California’s oldest municipal parks. bit.ly/ARP150

Hours: 8 a.m. to half-hour after sunset.

Parking lots will close to vehicle entry at 8:00 p.m. Acreage: 720

Council District: 5

Contact Information:
Park Operations & Ranger Staff: 408-259-5477
Permits & Reservations: 408-794-7275

04/03/2026

Park Ranger report: one bobcat, zero worries. As stewards of our parks, we call that a tree-mendous sign of a great spring ahead! 🌳

02/16/2026

Due to falling rocks and continued rain in the forecast, Park Rangers have temporarily closed Alum Rock Park to vehicle traffic for safety.

Local access remains open for neighbors.

We’ll continue to monitor conditions and will share updates as soon as vehicle access can safely reopen.

01/12/2026

Mountain lions are active in Alum Rock Park. Please stay on marked trails and follow posted signage.

Mountain lions are a protected species and an important part of our ecosystem. While seeing one can be exciting, always observe from a distance and never approach wildlife.

10/30/2025

While Alum Rock Park is still closed today and tomorrow, San José Park Rangers are busy helping it recover from last week's fire.

They’re placing wattles to prevent erosion, restoring vegetation, and preparing trails for the rainy season - all while monitoring local wildlife. In the last photo, you'll see fresh plant growth emerging 🌱

We're excited to welcome you back on Saturday, November 1!

10/24/2025

UPDATE: Alum Rock Park Remains Closed

Due to the recent 10-acre wildfire, Alum Rock Park will stay closed until Nov. 1, 2025, to ensure public safety and support environmental recovery.

Thank you for your patience as we work to restore the park safely and responsibly. We’ll review conditions and share any changes to the reopening date.

10/23/2025

Alum Rock Park will be CLOSED early today, October 23, due to fire activity in the area. Please stay clear of the park until further notice.

09/12/2025

🚧 Trail Work Alert! 🚧
Starting the week of September 15, 2025, crews will be working on trail improvements throughout the park.

First up: the Sycamore Switchback and the Penitencia Creek Trail between the Main Entrance (Marker 1) and Eagle Rock Parking Lot (Marker 2).

Some trails will be temporarily closed while work is underway. Please follow all posted signage so we can make the park safer and better for everyone. ✨

08/14/2025

Heads up! 🌳
Alum Rock Avenue (service road) in Alum Rock Park will be closed tomorrow, Thursday, Aug. 14 for tree maintenance to raise branches for emergency vehicle clearance.

Please stay on marked trails and follow posted signage.
Thank you for your patience!

07/11/2025

Based on the current fire weather readings, Alum Rock Park will be under restricted use on Saturday, July 12.

During restricted use, the park is open to the public but open flames, BBQ’s, fires of any type, and smoking are prohibited.

For more information, please visit bit.ly/AlumRockParkInfo.

06/24/2025

Join park staff, Park Rangers, San José Fire Department, and H.T. Harvey & Associates at upcoming community meetings to discuss a Vegetation Management Plan for Alum Rock Park! 🌳

This plan is centered on reducing fire risk and protecting our natural spaces for current and future generations.

Join us in being stewards of Alum Rock Park! Visit bit.ly/vmp-arp to learn more and get involved.

06/18/2025

Alum Rock Park closes early today, June 17, 2025, due to nearby fires.

Stay safe, San José!

Address

15350 Penitencia Creek Road
San Jose, CA
95127

Website

http://bit.ly/AlumRockParkInfo

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