Earthquake Risk Prompts Order to Drain California Dam

Worried that an earthquake could collapse a big dam south of San Francisco, officials have ordered its reservoir to be completely drained by October to reduce the risk of floodwaters spilling into Silicon Valley.

The 240-foot (73-meter) high earthen Anderson Dam, built in 1950 between San Jose and the community of Morgan Hill, poses too great a risk of collapse and must be fully drained by Oct. 1, according to the Federal Energy Regulatory Commission, which regulates dams, the Mercury News reported.