Section 401 Water Quality Certification Public Notice
Lake Aliso Spillway Repair and Rehabilitation and Lion Creek Stabilization Projects
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: |
Lake Aliso Spillway Repair and Rehabilitation and Lion Creek Stabilization Projects |
| City/County: |
Oakland, Alameda County |
| Comment Period: |
4/14/2026 - 05/4/2026 |
| Project Description: |
The existing conditions present safety and flooding concerns, including the deteriorated concrete spillway and large scour pit that have caused habitat damage, unstable slopes, and walking trail hazards. Uncontrolled creek flow during Water Year 2023 caused dam backside scouring and vegetation loss. The spillway has continued to deteriorate, and chunks of concrete have been falling into the basin below. |
| Project Files: |
Contact Staff for files |
| Staff Contact: |
Brian Wines (510) 622-5680 Water Quality Control Board 1515 Clay Street, Ste 1400 Oakland, CA 94612 |
