Water flows through break in the wall of the Oroville Dam spillway during heavy rains on Thursday, Feb. 9, 2017. The threat of a major flood is an ongoing risk in the Central Valley, and especially in Sacramento, much of which is situated on a flood plain. (AP Photo/Rich Pedroncelli)
Water flows through break in the wall of the Oroville Dam spillway during heavy rains on Thursday, Feb. 9, 2017. The threat of a major flood is an ongoing risk in the Central Valley, and especially in Sacramento, much of which is situated on a flood plain. (AP Photo/Rich Pedroncelli) Rich Pedroncelli AP
Water flows through break in the wall of the Oroville Dam spillway during heavy rains on Thursday, Feb. 9, 2017. The threat of a major flood is an ongoing risk in the Central Valley, and especially in Sacramento, much of which is situated on a flood plain. (AP Photo/Rich Pedroncelli) Rich Pedroncelli AP