“All river valleys are suspect,” she says — Mission Valley, the Sweetwater River Valley, the Otay River Valley, the Tijuana River Valley. “If you are in the Mission Valley area, have a high potential for liquefaction.”
Rose Canyon excavations, 1991. Rockwell and others have determined that the last magnitude-7 earthquake in Rose Canyon occurred about 1500 to 1600 A.D. “We’ve dated it in La Jolla and downtown San Diego."
Posted March 2, 2000
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San Diego Earthquake Danger Zones