At some point, there will be too many (I’m not all that much of a fan). Ryan Masse dives in:

Noah’s Ark water park in Wisconsin Dells currently lies in a state of hibernation, a fact of life for any outdoor attraction residing in the upper Midwest.
When the park reopens next month, it will be greeted by new competition — although not in the Dells. Instead, the challenge will come from Six Flags Inc., which will unveil its brand new Hurricane Harbor water park on the grounds of its Great America Theme Park in Gurnee, Ill.