The processes which creationists postulate may be responsible for rapid canyon formation were vividly demonstrated during the floods which occurred in the Midwest during the summer of 1993. Erosion damage to spillways at three sites is described: Tuttle Creek Lake on the Big Blue River at Manhattan, Kansas; Coralville Lake on the Iowa River at Coralville/Iowa City, Iowa; and Milford Lake on the Republican River near Junction City, Kansas. Each location involved not only the removal of overburden, but also rapid erosion of the underlying strata. Details of duration, water volume, and water flow rates are presented and, where possible, these data are compared to those of prehistoric flood catastrophes. It is shown that extensive erosion in a short period of time is possible even in relatively well-consolidated and lithified strata, and that the pattern of erosion sometimes is remarkably similar to certain features found in the Grand Canyon. Additionally, brief descriptions of strata and fossils are provided.