An earthen dam? Let’s hope it isn’t like the Johnstown Flood.
Oroville is a concrete and bedrock dam. It is not an earthen (soft earth and rock) structure and is not in danger of failing. There is concern for a 320ft long section of concrete that acts as an uncontrolled spillway when the lake level gets about 900 feet, and worst case scenario would be like a 30ft dam failing.
ONLY that portion is in danger.