Audrey Gavitt- California Dam

summary-
At least 188,000 people have evacuated from several Northern California counties after damage to a spillway at the Oroville Dam. The dam, which is the nation's tallest, remains intact. But the emergency spillway, which guards against the overflow of the dam when water levels are high, was eroding Sunday. The damage prompted a mandatory evacuation for cities and counties near Lake Oroville. In the worst case scenario, one official said, an uncontrolled release from the dam could send a 30-foot wall of water downstream. This has triggered concerns over whether the water could overflow the dam and flood nearby communities. The Oroville Dam provides flood control for the region and is located about 75 miles north of Sacramento. The lake has returned to near its pre-drought levels.  

http://www.cnn.com/2017/02/12/us/california-oroville-dam-failure/