 Between March 23 and March 27, 1913, Indiana and more than a dozen other states experienced major flooding during the Great Flood of 1913; it was Indiana's worst flood disaster up to that time.The weather system that created the unprecedented flooding arrived in Indiana on Sunday, March 23, with a major tornado at Terre Haute.In four days, rainfall topped nine inches in southern Indiana, more than half of it falling within a twenty-four-hour period on March 25.