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Fish Passage Facilities within the Alameda Creek Watershed

Project Information
April 2016
December 2018
Cost $29 Million
Project Phase Construction
Additional Information

The information shown reflects the current forecast information published in the latest WSIP Quarterly Report.

Project Materials

• Fish Passage Facilities Project Spring 2017 Fact Sheet

Need more information? Contact:

Olivia Nunez
Phone: 925.493.4535

Betsy L. Rhodes
Phone: 415.554.3240

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fish passage facilities

Project Update

As of March 2018, the project is over 65% completed. The contractor has completed foundation preparation, structure foundations for the sluiceway and the conveyance structure. We have demolished the existing intake structure to make room for the new work in the Spring. Major construction on the fish ladder will begin early next year as well as improvements to the access road to the diversion dam at four locations, and the installation of a permanent power supply and communications system, along with other ancillary facilities. Construction completion is expected winter 2018.

What to Expect During Construction

The Alameda Creek Diversion Dam is located on SFPUC lands adjacent to the Sunol Regional Wilderness Park in Sunol and helps collect water in Calaveras Reservoir through a long tunnel.

Sunol Regional Wilderness remains open during construction. If you frequent Sunol Regional Wilderness, you may have noticed increased activity in the park.

  • Park users should anticipate seeing increased construction traffic from the Geary Road entrance and along Camp Ohlone Road, which is the main construction access road
  • Temporary Trail Closures are necessary for large vehicle access and for road improvements. Please use alternative trails to Little Yosemite, such as Canyon View Trail, during these times
  • Please pay attention to construction flaggers and park signage
  • Construction activity is expected Monday thru Friday from 6AM to dusk

Project Description

The project will entail partial demolition of the existing Alameda Creek Diversion Tunnel’s intake structure, construction of a fish ladder and modified screens for steelhead migration into and out of the Alameda Creek Watershed. to facilitate fish passage around the existing Alameda Creek Diversion Dam, a new diversion structure comprised of four tee-shaped fish screens, an intake manifold and wet well, and three adjoining, concrete-box culverts in the bed of Alameda Creek. Work also includes improvements to the access road, retaining and landslide stabilization walls, improvements to Geary and Camp Ohlone Roads.

Last updated: 5/9/2018 1:15:21 PM