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Calaveras Dam Replacement Project

Project Information
Construction
Start
August 2011
Construction
Finish
April 2019
Cost $810 Million
Project Phase Construction
Additional Information

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

Project Materials

Project Fact Sheet - May 2017
Spillway Media Fact Sheet

Naturally Occurring Asbestos Information and Data

Naturally Occurring Asbestos Questions and Answers
Air Monitoring Results

 

Environmental Impact Report

Volume 1      • Volume 5-6
Volume 2      • Volume 5-7
Volume 3      • Volume 5-8
Volume 4      • Volume 6
Volume 5-1   • Addendum 1
Volume 5-2   • Addendum 2
Volume 5-3   • Addendum 3
Volume 5-4  
Volume 5-5  

Summary Data Reports from
Air Monitoring Events

August 2008 through August 2009
September 2009 through July 2010
August 2010 through November 2010

 

Need more information? Contact:

Olivia Nunez
Phone: 925.493.4535
Email: onunez@sfwater.org

Betsy L. Rhodes
Phone: 415.554.3240
Email: blauppe@sfwater.org

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Project Update

ALERT: CALAVERAS ROAD CLOSURE EXTENDED to SEPTEMBER 30, 2018. ROAD TO REOPEN ON WEEKENDS IN 2018. PLEASE STAY TUNED FOR UPDATES.

The Closure of Calaveras Road to thru traffic between Milpitas and Sunol has been extended to September 30, 2018.

The road had also been closed on weekends and holidays because of a landslide that undermined the road within the closure section. We anticipate the road to reopen for weekend use sometime in 2018. Please keep checking back for schedule details.

Learn more at the Calaveras Road Closure page.


What's New at Calaveras Dam?

Construction began in 2011 to build a new earth and rock fill dam adjacent to the existing dam. The new spillway was completed in April 2016, including installation of the spillway bridge, and installation of all the structural concrete walls on the spillway.

Several major components have been completed including the intake tower, electrical building, and foundation grout curtain. Now, we are working on dam embankment and the downstream structures such as the stream maintenance building and the valve vault. The project has experienced some slowdown in activities due to recent storms, but as of January 2017, the project is over 80% complete.

Project Description

The Calaveras Dam Replacement Project consists of building a new zoned earth and rock fill dam immediately downstream of the existing dam. The replacement dam will have a structural height of 220-feet high and is designed to accommodate a maximum credible earthquake on the Calaveras Fault. The dam will have a crest length of 1,210 feet, a base thickness of 1,180 feet, and crest thickness of 80 feet. The total volume of the dam will be approximately 3.5 million cubic yards. The replacement dam will restore the original reservoir capacity of 96,850 acre-feet, or 31 billion gallons of water. The storage is crucial to providing adequate water to our 2.6 million customers in the Bay Area.



Construction team standing in the newly completed dam spillway 

Team members celebrate completion of the new spillway in April 2016

Check out our time lapse video of our construction progress.


Last updated: 12/5/2017 10:12:43 AM