When will Anderson Reservoir be closed to the public?
It is expected that the reservoir will be available for recreational use until spring 2015. The current plan is to drain the reservoir from spring through fall 2015 (a process that will take approximately nine months), and during this time the reservoir will be closed to recreational activities. The reservoir will likely be empty from early 2016 through 2018 in support of construction activity, and no recreational use will be allowed then. After construction is complete, refilling of the reservoir will be dependent on “Mother Nature,” or how much rainfall the area receives.
Answers to most commonly asked questions about the project can be found in the following links:
Anderson Dam Seismic Retrofit Project FAQ
Responses to questions posed at the January 2013 public meeting
Step back in time and view historic photographs of how Anderson Dam was built.
Recent public meeting held on the proposed project
On Monday, August 26, the water district hosted a scoping meeting to inform residents about the proposed Anderson Dam Seismic Retrofit Project, a large-scale capital project scheduled to break ground in 2016, and the environmental review process for the project. The scoping meeting will provide an opportunity to provide comments about the scope and content of the information to be addressed in the draft Environmental Impact Report.
Anderson Dam and Reservoir was named for Leroy Anderson, the key founder and first president of the Santa Clara Valley Water Conservation District. It was built in 1950, on a 500-acre dairy and cattle ranch along Coyote Creek purchased from the estate of John Cochran and his wife, Aphelia Farmington. The 7.8-miles-long Anderson Reservoir is the largest man-made lake in Santa Clara County. The reservoir can store 89,073 acre-feet of water. Its surface area is 1,271 acres.
Anderson Dam Seismic Stability Study completed
In July 2011, the Santa Clara Valley Water District completed a seismic stability evaluation of Anderson Dam. The evaluation found that the dam is subject to significant damage if a large earthquake were to occur close to the dam.
A storage restriction of 25.5 feet below the spillway has been put in place to protect public safety. The dam’s two regulatory agencies, the California Division of Safety of Dams and the Federal Energy Regulatory Commission approved the restriction. The restriction will allow the dam to fill to 67 percent of its full storage capacity. Staff believes that this will prevent the uncontrolled release of water after a major earthquake.
The water district has initiated a capital project, the Anderson Dam Seismic Retrofit Project, to complete the planning, design and construction of a seismic retrofit by the end of 2018. The operating restriction will remain in place until the project is completed.
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