FILE - Water flows down the Oroville Dam's crippled spillway in Oroville, Calif., on Feb. 28, 2017. Americans wondering whether a nearby dam could be dangerous can look up the condition and hazard ratings of tens of thousands of dams nationwide using an online database run by the federal government. But they won't find the condition of Oroville Dam, which underwent a $1 billion makeover after its spillway failed. (AP Photo/Rich Pedroncelli, File)