OROVILLE, CA - FEBRUARY 13: Oroville lake, the emergency spillway, and the damaged main spillway, are seen from the air on February 13, 2017 in Oroville, California. Almost 200,000 people were ordered to evacuate the northern California town after a hole in an emergency spillway in the Oroville Dam threatened to flood the surrounding area. (Photo by Elijah Nouvelage/Getty Images)