Estero Trail (Proposed)

The Sonoma County Regional Parks Department and the Sonoma County Agricultural Preservation and Open Space District are partnering on the Estero Trail Project. The purpose of the project is to define and dedicate a public access pedestrian only trail easement alignment to connect Highway 1 to the Estero Americano. The proposed project is located on the Bordessa Ranch property located just north of Valley Ford between Highway 1 and the Estero Americano.

The Public Review Period was open for the initial study on the Designation of Trail Corridors and Associated Staging Areas Project. The comment period ran from October 20 to November 19, 2016.


The Estero Americano is a 9-mile coastal estuary on the Sonoma-Marin border. This unique landscape and its beautiful vistas have had limited public access in Sonoma County, with the surrounding land predominantly used for livestock grazing and dairy farming. In May of 2012, the Sonoma County Agricultural Preservation & Open Space District acquired a Trail Easement on the Bordessa Ranch, a 495-acre Ranch on Valley Ford Road that backs up to the estuary. The trail easement provides an opportunity for public access to this stunning natural resource.


Sonoma County Regional Parks received grant funding from the California Coastal Conservancy to develop a plan that defines public access and recreation and minimizes impacts on the property’s occupants and sensitive resources. Funding will support studies that will help determine the location of public-access improvements. Recreational uses may include low-impact trails for nature study, bird watching, docent-led tours, picnicking, outdoor education, scientific research and observation. Seasonal access to the Estero Americano for kayaking and canoeing also will be evaluated.

Become Involved

The Public Review Period was open for the initial study on the Designation of Trail Corridors and Associated Staging Areas Project. The Comment Period Ran from October 20 to November 19, 2016.

The first project community workshop was held on May 8, 2014, to discuss the planning process for the Proposed Estero Trail. Over thirty stakeholders and members of the public attended the meeting and shared ideas and provided feedback on potential future uses.

The second and final community workshop on November 4, 2015 presented a project overview and timeline, and the proposed locations of the Estero Trail Corridor. The presentation was followed by an open question and answer period which provided time for stakeholder’s questions and comments to be heard. The meeting presentation can be viewed below:

PDF fileEstero Trail At Bordessa Ranch Presentation (3.3 MB)

Public meeting dates and other planning information will be shared on this website. To get the latest news, please sign up for “Planning Updates” in the upper right of this page.

For additional information please contact Karen Davis-Brown, Project Manager at (707) 565-1359 or by email at

Questions or Comments?

Contact Project Manager:

Karen Davis-Brown
Call:  (707) 565-1359
Email:  Karen Davis-Brown

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