Ross Creek Sewer Removal Project

Ross Creek Sewer Removal Project

Project Construction:  Summer 2021

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Project Summary

The Ross Creek Sewer Removal project is designed and currently in the permitting phase. The project will remove an abandoned 24-inch diameter sewer from the creek bed of Ross Creek at the Shady Lane bridge. 

In order to minimize upstream erosion, natural rock features will be used to create a sustainable riffle structure in place of the sewer (which was originally installed in 1926 and a replacement siphon was installed 7.5 feet below the streambed in Oct. 2019).


All RVSD projects and work activities being conducted adhere to the District’s COVID-19 Exposure Control Plan to prepare for and, mitigate against the risk of COVID-19 exposure to the District’s office staff and field workers.

These upgrades to old or outdated system infrastructure will enhance local wastewater system reliability and efficiency.

In addition, the abandoned sewer removal from the streambed will have aesthetic benefits of a more natural-looking water feature as viewed from the Shady Lane bridge, as well as the environmental benefits of improving conditions for anadromous fish migration of the native steelhead trout population of the Corte Madera Creek watershed.

Sewer pipe is being removed from the creek bed in Ross Creek

Ross Creek

It is being replaced with a natural rock riffle structure

Ross Creek3

A  Supplemental Initial Study/Mitigated Negative Declaration  (IS/MND) for the Shady Lane Sewer Removal Project 

has been released for public and agency review. The Shady Lane Sewer Removal Project addresses the Shady Lane portion of the Large Diameter Gravity Sewer Rehabilitation Project II-3, which was completed in 2019. The Project is located near Shady Lane and Locust Avenue at Ross Creek under the Shady Lane Bridge in Ross, California. The District is undertaking voluntary action to remove the abandoned sewer pipe and concrete casing that traverses Ross Creek, which is a partial barrier to juvenile Coho salmon migration. 

The public review and commenting period for the Supplemental IS/MND ends on June 7, 2021. All comments should be sent to Steve Moore, Ross Valley Sanitary District, 2960 Kerner Boulevard, San Rafael, California 94901 or emailed to by the above date.


Click here to view the Notice of Intent to Adopt a Supplemental Mitigated Negative Declaration for the Shady Lane Sewer Removal Project.

Project Information and Construction Notices

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Project Construction Will Include

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What You Can Expect

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Project Contacts

Project Manager - TBA



Construction Manager - TBA 



More Information About Construction Projects

Project Maps

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Click here to view both current and completed CIP projects on an interactive map. You can also go to the project pages listed on the left of this page for more information about individual CIP projects that are under construction or scheduled to begin soon. Check this page regularly for updates to schedules and other information.


To find out if there will be construction in your neighborhood

Notify Me at and click to select the Construction Updates you want.


To leave a message or request being added to the project email list

Call RVSD at 415-259-2949. Our office staff are available Monday - Friday from 7:30 a.m. to 4 p.m. 

We can assist you with emergency service 24 hours per day, seven days per week.

RVSD APPRECIATES your patience as we fulfill our commitment to making strategic long-term infrastructure improvements.