Friday, April 18, 2014

Calaveras Dam Welcomes the US Society on Dams Conference

It is fitting that the SFPUC helped host the annual meeting of the United States Society on Dams (USSD) this last week in the same month as the anniversary of the 1906 Great Earthquake and Fire. The group finished their week of technical sessions and presentations on dam safety in extreme events with a field tour of a dam in construction.
That would be our very own Calaveras Dam Replacement Project. The project will construct a new seismically designed earth and rock fill dam right next to the existing, which will be able to withstand the maximum credible earthquake on the Calaveras fault.
The USSD Conference attendees peppered the Calaveras Dam Replacement Project Team with questions.  We appreciate that the SFPUC project team members, the Construction Management team from Black & Veatch, Design team from URS, and the contractor Dragados USA/Flatiron/Sukut Construction shared their experiences with their industry colleagues. 

Then the Calaveras Team returned to the current work at hand, which is continuing the major excavation work on the new spillway and stilling basin, as well as mechanical and electrical improvements to the new intake Tower.

When complete in late 2018, the replacement dam will enable us to bring the Calaveras Reservoir back to historic capacity, storing approximately half of the Hetch Hetchy Regional Water System’s local Bay area water supply.

This somber anniversary for the 1906 Great Earthquake reminds us to ensure our families are prepared for the next big earthquake. Visit, or to learn more. 

 SFPUC Project Manager Susan Hou discusses the critical upgrades to the Hetch Hetchy Regional Water System

Project Manager Alberto Benlloch from the joint venture of Dragados USA/Flatiron/Sukut Construction points out to the tour the excavation work to-date of over 4 million cubic yards of material

Aerial view taken on March 23, 2014

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