On June 28, 2006, a flood second only to the Agnes flood struck Knoebels. About 90 percent of the amusement park was under water just prior to the July 4th weekend. As the waters began to recede, Knoebels staff was able to reopen over 60 percent of its attractions within two days and 90 percent within four days. Because over 100 tons of mud had to be dug out of the Crystal Pool, it required 10 days to be operational. The last ride to return to operation was the Kiddie Panther Cars, whose repairs took almost three weeks.