Thousands of people in the U.S. may be at risk from dams that are rated in poor or unsatisfactory condition.  An Associated Press investigation has identified at least 1,680 dams in 44 states and the U.S. territory of Puerto Rico that are considered to be high hazard and in poor or unsatisfactory condition.  A dam is listed as high hazard if its failure is likely to result in people being killed.  The dams and their date of last inspection have been plotted on an interactive map.  Looks like there is only 1 in California.