Overtopped! oroville'>Lake Oroville flowing over emergency spillway for first time in dam’s history
BREAKING: At least 130,000 people asked to evacuate over concerns California's Oroville Dam's emergency spillway could fail.
Aerial video shows strain on California's Oroville Dam's backup spillway hours before thousands ordered to evacuate.
Water flows over emergency spillway at Oroville Dam for first time in reservoir's nearly 50-year history