Rancho Canada del Oro
Enjoy almost nine miles of trails and a quiet rural landscape in the Santa Cruz Mountain foothills.
Trail Map
Boccardo Corridor
Experience some of the best views in the Valley and over ten miles of trails including the new 1.2 mile Aquila Loop Trail high atop Sierra Road.
Trail Map


Voters Show Overwhelming Support for Open Space

On November 4, 2014, voters passed Measure Q with more than the required 2/3 majority of the vote. Measure Q is a $24 annual parcel tax that will generate approximately $7.9 million per year. All funds will be spent in the cities of San Jose, Milpitas, Santa Clara, Campbell and Morgan Hill, and the unincorporated areas of the County.

Read a message from Andrea Mackenzie, General Manager



Starry Nights in Open Space - January 24
Explore OSA's Newest Property - January 24

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Nature's Value button

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Discover Your Open Space in Santa Clara County

Click the video above.

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Putting Nature on the Balance Sheet

By Alison Hawkes
In a world where money talks, as they say, nature has been at a distinct disadvantage. How do you put a price tag on the existence of a species, or the workings of a watershed, or the presence of a forest?


Marc Landgraf Joins Open Space Authority

The Open Space Authority is excited to welcome Marc Landgraf as the new External Affairs Manager. In this role he will develop new public, nonprofit and private funding opportunities and conservation partnerships to support the Authority’s mission of preserving open space lands in Santa Clara County.


Calling All Bird Lovers

December 14 and 27 Contribute to this important annual project sponsored by the Audubon Society while enjoying the great outdoors in the Authority's beautiful open space preserves. Observe rare wildlife in areas of the preserves normally closed to the public.

For details and registration


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Public Meetings

Board and Committee Meetings and Agendas

Citizens Advisory Committee Meetings and Agendas