Water flows down Oroville Dam's main spillway, near Oroville, California.
Water flows over the 1,700-foot emergency spillway, bottom left, at Lake Oroville for the first time since the lake was built in 1968.
California Highway Patrol Officer Ken Weckman directs traffic on Highway 70 as residents evacuate Marysville, California, Sunday night because of the potential for failure of the Oroville Dam.
Jason Newton, of the California Department of Water Resources, takes a picture of water going over the emergency spillway at Oroville Dam.
In this Saturday, Feb. 11, 2017, photo, water flows down Oroville Dam's main spillway, in Oroville, Calif. Officials have ordered residents near the Oroville Dam in Northern California to evacuate the area Sunday, Feb. 12, saying a "hazardous situation is developing" after an emergency spillway severely eroded. (AP Photo/Rich Pedroncelli)
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