Saturday 18 November 2017

Failing spillway

, February 14, 2017

An undated handout photo made available by the California Department of Water Resources (DWR) on February 13 shows an aerial view of the damaged Oroville spillway in Oroville, California. At least 188,000 residents were ordered to evacuate the area, about 150 miles northeast of San Francisco over fears of imminent failure of the emergency spillway at the Oroville Dam, the tallest dam in the US, as a result of severe erosion and heavy rain.

A pair of storms are expected to hit the state this week, and forecasters say they will be strong enough to bring 2 to 6 inches of rain to Oroville, where the concrete spillway at Oroville Dam has been crumbling since Tuesday and an emergency earthen spillway with a concrete lip was eroding so severely Sunday that officials warned a 30-foot wall of water could be unleashed on Oroville and other towns along the Feather River.

Photo: EPA/California Department of Water Resource


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