TIL that the California St. Francis Dam disaster of 1928, a midnight-hour 120' wave that killed 431 sleeping people and wiped out giant sections of land more than 50 miles west to Ventura, was caused by the dam having been built on a fault zone (in addition to the dam's retention of water).
geoforward.comSubmitted by atrailofdisasters t3_10i7j1k in todayilearned