Lake Oroville and Oroville Dam in Butte County are part of the State Water Project and an important source of water for Southern California. The Metropolitan Water District is the largest of the state water contractors and imports about 30% of the Southland's water supplies from Northern California.

Oroville's main spillway suffered severe damage in early February when flood control releases from the lake eroded sections of the concrete channel. Watch a timeline of the events as they unfolded.