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WELCOME!

  • Shell Ridge Open Space

  • California Poppies in the Spring

  • Open Space Bluebird family

  • The elusive bobcat!

  • Volunteers have all the fun!

  • Open Space bush rabbit

  • Mount Diablo Sunflower in Lime Ridge

  • Indian Valley in Shell Ridge

  • Monarch Butterfly

  • Quail in the Open Space


The Walnut Creek Open Space Foundation works to preserve and enhance Walnut Creek's 2700 acres of open space and to educate area residents so that they can enjoy this wonderful resource. Learn more...

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New WCOSF website design! Tell us what you think website@wcosf.org

Local Girl Scout to build bat houses in Shell Ridge - Information coming soon!

WCOSF receives 2 awards from the Action For Beauty Council

New Weekend Volunteer Group Started!

New Open Space on Acalanes Ridge

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Every Tuesday Morning - 9am to 12pm - WCOSF Tuesday Group meets to complete various activities in the Open Spaces

May 18, 2013 - 9am to 12pm - East Bay Sustainability Challenge at Bayberry Pond

May 18, 2013 - 9am to 12pm - Mustard Eradication in Shell Ridge

June 8, 2013 - Heritage Day at Borges Ranch - Information coming soon!