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WELCOME!

  • Shell Ridge Open Space

  • Acorn Woodpecker in Shell Ridge

  • Open Space Bluebird family

  • The elusive bobcat!

  • Volunteers have all the fun!

  • Open Space bush rabbit

  • Mount Diablo Sunflower in Lime Ridge

  • California Poppies in the Spring

  • 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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Join Our Meetup Group!

2017 Spring/Summer Newsletter Now Available

Remembering Ralph Kraetsh --
Ralph Kraetsh, co-founder of the WCOSF Oak Habitat Restoration Project, passed away on May 20, 2017. Many of you have known Ralph and his many accomplishments within the city of Walnut Creek and the Open Space Foundation for years. He had spent hundreds of hours and energy to further the goals of the Foundation and his Oak Habitat objectives. His imagination led to planting hundreds of acorns and the education of many people throughout the state on what was happening in Walnut Creek to save the oak trees.
Ralph Kraetsh


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

Saturday June 3 - 9am to 12pm - Sutherland Entrance Restoration in Shell Ridge

Monday June 12 - 9am to 12pm - Monthly Nursery Group at the Native Plant Nursery

Saturday June 17 - 9am to 12pm - Sutherland Entrance Restoration in Shell Ridge

Saturday July 1 - 9am to 12pm - Sutherland Entrance Restoration in Shell Ridge