This infographic from — click for the much bigger original, which has details about all the plants — shows at-risk nuclear facilities in the United States. Most of the ones situated in high-population areas (the larger gray circles) don't coincide with the high seismic risk areas (yellow and red), so that's comforting … but two California stations, San Onofre and Diablo Canyon, and one Washington station sit in areas at risk of earthquakes. (San Onofre also once had its reactor vessel installed backwards. Oops.) On the plus side, all three are a decade newer than Fukushima Daiichi.