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Condition of some US dams kept secret in national database

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) FILE - Water starts to flow from the lower jet flow gates at Hoover Dam near Boulder City, Nev., Thursday June 11, 1998, during testing of the newly installed jet flow gates. 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 Hoover Dam, which impounds one the nation's largest reservoirs on the border of Nevada and Arizona. (AP Photo/Lennox McLendon, File)