Section 401 Water Quality Certification Public Notice

Viansa Emergency Flap Gate Repair Project


The San Francisco Regional Water Quality Control Board is currently reviewing an application for the following project for water quality certification under Section 401 of the Clean Water Act. We encourage public comments on the proposed work, which will be considered in the decision on certification. You may submit comments on this project to the staff member below.


Project Name:

Viansa Emergency Flap Gate Repair Project
City/County:

Unincorporated, Sonoma County
Comment Period:

9/8/2023 - 9/29/2023
Project Description:

A metal pipe and flap gate installed along a maintained levee has failed and is flooding adjacent farm fields impacting a total of 3 properties including agricultural areas and a local airport runway.
Project Files:

Contact Staff for files
Staff Contact:

Holly Garber
(510) 622-2357
Water Quality Control Board
1515 Clay Street, Ste 1400
Oakland, CA 94612