Maintenance Desilting of Lower Alameda Creek (Zone 5, Line A) Fish Ladder and Resting Pool, in the vicinity of the BART Weir, Fremont, Alameda County
Summary
SCH Number
2025070849
Public Agency
Alameda County Flood Control and Water Conservation District
Document Title
Maintenance Desilting of Lower Alameda Creek (Zone 5, Line A) Fish Ladder and Resting Pool, in the vicinity of the BART Weir, Fremont, Alameda County
Document Type
NOE - Notice of Exemption
Received
Posted
7/21/2025
Document Description
The project is located on Alameda Creek (Zone, 5, Line A) flood control channel in the vicinity of the BART Weir, in the City of Fremont. The Alameda Creek fish ladder was completed in 2022. After the winter storms of 2024, the fish ladder structure and the downstream resting pool were filled in with sediment from the storms. The District proposes to desilt approximately 870 cubic yards (CY) of material from the ladder structure and approximately 1,900 CY of material from the downstream resting pool area. A total of approximately 2,770 CY is proposed for maintenance desilting. A cofferdam would be installed upstream to divert nuisance flows during the maintenance desilting activities and water will be re-routed around the work area using automatically actuated pump and pipeline, or by gravity flow. Cofferdams are anticipated to be gravel filled, structural dams and augmented with sandbags, if necessary. Upon completion of the project, cofferdams will be removed from the channel and normal water flow established. Sediment will be removed with excavating equipment and hauled to an approved upland disposal site. All work will be performed on Flood Control District Properties and easements. The purpose of the project is to restore capacity to the fish ladder and resting pool area, and to allow continued safe upstream migration of steelhead, Coho and Chinook salmon to reach upstream spawning rearing habitat.
Contact Information
Name
Moses Tsang
Agency Name
Alameda County Flood Control & Water Conservation District
Job Title
Deputy Director
Contact Types
Lead/Public Agency
Address
Phone
Email
Name
James Yoo
Agency Name
Alameda County Flood Control & Water Conservation District
Job Title
Associate Environmental Compliance Specialist
Contact Types
Lead/Public Agency
Phone
Email
Location
Cities
Fremont
Counties
Alameda
Regions
Citywide
Cross Streets
In the vicinity of BART Weir, about 1.2 miles downstream of Mission Boulevard
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Sec 15301, Existing Facilities
Reasons for Exemption
The proposed project constitutes repair, maintenance, and minor alteration to existing public facilities involving negligible expansion of use.
County Clerk
Alameda
Attachments
Notice of Exemption
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