Sunnyvale East and West Channels Flood Protection Project
7 Documents in Project
Summary
SCH Number
2013012041
Lead Agency
Santa Clara Valley Water District
Document Title
Sunnyvale East and West Channels Flood Protection Project
Document Type
NOD - Notice of Determination
Received
Posted
9/25/2025
Document Description
The proposed Sunnyvale East and West Channels Flood Protection Project (Project) would provide flood protection for residents, businesses, and infrastructure along a 9.5 mile length of the Sunnyvale East and West Channels. The Flood Protection Project consists of developing new flood protection infrastructure necessary to provide 100-year riverine flood protection, developing water quality improvements where possible, and making recommendations for recreational improvements. The proposed Project would include floodwalls, levee and maintenance road improvements, bridge/culvert modifications, and sediment removal. The Project also includes repairing and stabilizing several stream bank sections that are unstable and actively eroding. Since certification of the Final Environmental Impact Report (EIR), the City of Sunnyvale and Valley Water have developed plans to combine segments of a floodwall originally proposed as part of the Flood Protection Project and a proposed perimeter security wall around the Sunnyvale Water Pollution Control Plant (WPCP). This wall, referred to as the Joint Wall, would be approximately 1,100 feet in length and would extend from the Carl Road bridge to the near the northeastern edge of the WPCP. The Joint Wall would be approximately 8 feet in height, include barbed wire, and would provide the same level of flood protection as the original floodwall (100-year flood protection). In addition to the 1,100 feet section of Joint Wall, Valley Water would construct a transitional section of floodwall as part of the Project to connect from the northern terminus of the Joint Wall to the Valley Water proposed floodwall along the existing levee near the downstream end of the Sunnyvale West Channel.
Contact Information
Name
Nick Mascarello
Agency Name
Santa Clara Valley Water District
Job Title
Associate Environmental Planner
Contact Types
Lead/Public Agency
Phone
Location
Cities
Cupertino, Sunnyvale
Counties
Santa Clara
Regions
Citywide
Cross Streets
Numerous
Zip
94088
Parcel #
Numerous
State Highways
US 101, I-280, SR85, 237
Railways
UPRR, VTA
Airports
Moffett Field Naval Air Station
Schools
Numerous
Waterways
San Francisco Bay
Notice of Determination
Approving Agency
Santa Clara Valley Water District
Approving Agency Role
Lead Agency
Approved On
County Clerk
Santa Clara
Final Environmental Document Available at
5750 Almaden Expressway
San Jose, CA 95118
Determinations
(1) The project will have a significant impact on the environment
Yes
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
Yes
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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