New Bullards Bar Dam Atmospheric River Control (ARC) Spillway Project
4 Documents in Project
Summary
SCH Number
2020110163
Lead Agency
Yuba County Water Agency
Document Title
New Bullards Bar Dam Atmospheric River Control (ARC) Spillway Project
Document Type
NOD - Notice of Determination
Received
Posted
6/15/2026
Document Description
The Project involves constructing, operating, and maintaining a new additional spillway and associated facilities on the left abutment of New Bullards Bar Dam. New Project facilities include: (1) a 500-foot-long approach channel excavated adjacent to the existing spillway to connect the spillway control structure and chute to New Bullards Bar Reservoir; (2) a gated control structure located directly downstream of the approach channel; (3) a concrete-lined spillway chute located downstream of the control structure equipped with a flip bucket directing flows toward the North Yuba River canyon; (4) a 690-foot-long excavated discharge channel that discharges to the North Yuba River; and (5) an operations platform and gate control building, electrical systems for gate operation and monitoring, and new permanent access features (e.g., roads, operations platform, overlook site access, and maintenance benches). The spillway chute will be an open channel designed with a freeboard capable of discharging 64,000 cubic feet of water per second from New Bullards Bar Reservoir for flood control. The ARC Spillway will mainly operate to reduce flood risk in the Yuba-Feather River system.
The Project also requires relocation of an existing overlook site at New Bullards Bar Dam’s left abutment, relocation of a short segment of Marysville Road over the new spillway, and establishment of a permanent disposal area for excess excavated soil and rock associated with the Project’s construction. Construction is anticipated to occur over approximately four years.
Contact Information
Name
Adam Cohen
Agency Name
State Water Resources Control Board
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Responsible Agency
Phone
Name
John James
Agency Name
Yuba County Water Agency
Job Title
Project Manager
Contact Types
Lead/Public Agency
Phone
Email
Location
Cities
Greenville
Counties
Yuba
Regions
Citywide, Countywide, Northern California
Waterways
New Bullards Bar Reservoir, North Yuba River
Notice of Determination
Approving Agency
State Water Resources Control Board
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Yuba
Final Environmental Document Available at
https://www.yubawater.org/DocumentCenter/View/8615/Yuba-River-Development-Project-and-Narrows-Final-Environmental-Impact-Report-PDF; 1220 F Street, Marysville CA 95901
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
Yes
(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 Completion [NOC] Transmittal form
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.