River Dredging Schedule & Info


The much anticipated US Army Corps Petaluma River Dredging project is finally here!

As with all major renovation projects, the dredging work will create some pain--including traffic and park closures--before we get to our ultimate gain--a better River! The good news is, most of the impacts will occur for a short time, not for the entire project timeline.

This project is being funded and managed by the US Army Corps of Engineers. But it is only happening because of the hard work and determination of countless community members, local and national leaders, and partner organizations. We appreciate your patience during this final part of our dredging journey!

Get more details about the dredging project in the resources and FAQs below.

Funding Announcement Press Release
Capital Improvement Projects Page (Engineer information)
Staff Report

Project Manager

Jonathan Sanglerat

[email protected]


Project Hours of Operation & Timeline

The dredging crews will be working 24 hours a day, 7 days a week, from September 4 through October 21. This expedited project timeline is required by the US Fish & Wildlife Agency permit required by the project. Working 24x7 will help protect our local ecosystems!

Update on Dredging Status of Marina

In response to questions about the status of dredging of the Marina, the Marina will be dredged, however, not as part of the current dredging project.
Dredging the Marina requires a different approach - mechanical instead of hydraulic. The current project used a hydraulic approach that is not suitable for the Marina. The City is working to get the required permits and identify the needed funds to dredge the Marina, using the mechanical approach, as soon as possible.

Shollenberger Trail Loop Closure Aug 31-Nov 1

For the work to be completed, the Army Corps of Engineers requires that the popular Shollenberger Loop Trail be CLOSED from Monday, August 31 through Sunday, November 1. The closure includes the main parking lot and public restrooms located off Cader Lane.

We understand that closing this popular section of trail will undoubtedly be an inconvenience for many. We encourage all those looking to access the local wetlands to take advantage of the network of trails that will remain open at the Ellis Creek Water Plant (parking lot off of Cypress Dr.) and Alman Marsh (parking at the Sheraton Hotel).

Noise Impacts Oct 11 through Oct 21

Dredging is noisy work! Residents and businesses along the Riverfront may experience noise when the project moves into the Turning Basin (Oct. 11 through Oct. 21). Remember, dredging will happen 24 hours a day, 7 days a week. Please be prepared for noise all day and all night. Thank you for your patience!

River Access

During the project, the areas undergoing dredging will not be accessible to the public, and marine traffic will likely be affected as well. Obstructions such as docks that are currently encroaching on the federal channel will need to be relocated during the project.

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Turning Basin
map of Petaluma River Dredging project
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