Trail Alerts

For updates on work at the Harry Tracy Water Treatment Plant, please visit

Thursday, April 21, 2011

Pulgas Water Temple Temporary Closure

The Pulgas Water Temple will be closed for several weeks beginning on Monday, April 25, 2011. The temporary closure enables critical water system work to take place in the entrance and parking lot areas. Reopening is expected in late summer 2011.

The Pulgas Water Temple and the associated facilities around it serve the Hetch Hetchy Regional Water System and are components of the Crystal Springs Reservoir System. The Crystal Springs Reservoir System provides supplementary water supply to San Mateo and San Francisco counties, and is the primary emergency water source should delivery from the Hetch Hetchy aqueduct be interrupted.

The work is part of the Water System Improvement Program to repair, replace and seismically upgrade the Hetch Hetchy Regional Water System.

Please contact us with any questions or concerns at (866) 973-1476, 24 hours a day. For email notification when then Pulgas Water Temple reopens, subscribe to this blog!

Wednesday, April 20, 2011

Construction Crews Prepare for a Busy Spring Near Sawyer Camp Trail

A new sight you can expect in late April is a large crane along the shoreline of the Lower Crystal Springs Reservoir near the southern end of Sawyer Camp Trail. Don’t worry, the large equipment is only here temporarily -- and when the project is complete there will be permanent improvements to the great view pictured below.

Lower Crystal Springs Dam after removal of the bridge, January 2011.

Work on the Lower Crystal Springs Dam project is moving forward rapidly, especially as we enter the dry season. Crews may work some nights and weekends in the area in order to complete major construction before the rainy season begins next winter.

Many trail users last month noticed our team recording a video along Sawyer Camp Trail. The pre-construction survey is finished, and you may see additional tree cutting along the trail in the coming weeks. This work is supervised by biologists and is a carefully monitored process.

Sawyer Camp Trail remains open, and will be closed only for short intervals during construction. Subscribe to this blog for updates.

Please feel free to call with any questions or concerns, 24 hours a day: (866) 973-1476.

Friday, April 1, 2011

Peninsula Region Construction Launch Event Celebrates 4 Major Projects

Last Wednesday at the Lower Crystal Springs Reservoir, the San Francisco Public Utilities Commission (SFPUC), San Mateo County Board President Carole Groom, the Bay Area Water Supply and Conservation Agency and officials from throughout San Mateo County gathered to launch another $320 million in upgrades for the Hetch Hetchy Regional Water System. Together these improvements will allow the SFPUC to provide water service to over 1 million people in San Mateo County and San Francisco within 36-hours of a major earthquake.

The event was held on the water’s edge adjacent to the two outlet towers that draw water out of the Crystal Springs Reservoirs. These historic structures built in 1891 and 1936 by Spring Valley Water Company are scheduled to be demolished and submerged under the water line as part of the upgrades. Work at these structures and in the reservoirs represents the most extensive underwater work in the Water System Improvement Program. Additional work in the area includes upgrades to the spillway and parapet wall at the top of the Lower Crystal Springs Dam. Built in 1890, this concrete, gravity-arch dam later served as a model for the Hoover Dam.

“San Mateo County residents and businesses depend on this regional water system. It has taken years of planning and collaboration by many agencies to reach this point,” said Carole Groom, President of the San Mateo County Board of Supervisors. “There will definitely be some inconvenience due to construction, but this inconvenience pales in comparison to not having access to clean drinking water.”

The projects celebrated include upgrades to the Harry Tracy Water Treatment Plant (, Crystal Springs Pipeline No. 2 (, Lower Crystal Springs Dam and Crystal Springs/San Andreas Transmission System ( and