Stream Conservation Area Ordinance

Community Development Agency

Photo of a stream

Stream Conservation Ordinance for San Geronimo Valley.

The Community Development Agency is pleased to announce the publication of the Public Review Draft of the Stream Conservation Area (SCA) Ordinance for the San Geronimo Valley.  The proposed ordinance consists of a suite of amendments to the County’s zoning ordinance (Development Code) that would establish an SCA buffer of 100 feet or more, create standards for development within the buffer, and provide permit review procedures and requirements. In addition, the ordinance includes various supporting resource materials to provide guidance to homeowners and contractors.

Please note the Board of Supervisors hearing initially scheduled for March 8, 2022, has been postponed to May or June 2022. The project schedule will be updated when a date has been determined.

Draft of the the Planning Commission Recommended Stream Conservation Area Ordinance based on the 12/13/2021 hearing.

Planning Commission Hearing (online): December 13, 2021 at 1:00 pm:

Planning Commission Workshop Documents for November 8, 2021:

The proposed SCA ordinance builds upon efforts to protect the health of streams and habitat for the endangered coho salmon and steelhead trout in the San Geronimo Valley, consistent with riparian protection policies from the 2007 Marin Countywide Plan (CWP) and mitigation measures from the Final Supplemental EIR with a Focus on Potential Cumulative Impacts to Salmonids in the San Geronimo Valley (FSEIR).

Other resources:

Contact Kristin Drumm for questions or to submit feedback.


December 20, 2021: Press Release - San Geronimo Valley Ordinance Receiving Changes

October 28, 2021: Press Release - Stream Conservation Policy Goes Before Planning Commission

September 20, 2021: Press Release — Public Review Begins on Stream Conservation Policy.

March 3, 2021: Marin IJ: New rules brewing on San Geronimo Valley development.

March 2, 2021: Status of the Expanded Stream Conservation Area Ordinance for the San Geronimo Valley.

February 13, 2020: Press Release — County Seeks Balance on San Geronimo Valley Policy.

March 2, 2021
Board of Supervisors Public Hearing
The Marin County Board of Supervisors will receive a status report on the Expanded Stream Conservation Area Ordinance for the San Geronimo Valley starting approximately at 1:30 pm on March 2nd. 

Watch online via Webcast
Board Letter
Public Comments

February 11, 2020
Board of Supervisors Public Hearing
 On February 11, 2020, the Board approved Countywide Plan Phase 1 work program initiative to develop an Expanded Stream Protection Ordinance for the San Geronimo Valley.

Watch online via Webcast
Board Letter