Owned by Cedar Fair, the park opened in 2005 as part of the larger Geauga Lake and Wildwater Kingdom resort.

The site was previously the location of SeaWorld Ohio (1970–2000) and later served as the marine life section of the larger Six Flags Worlds of Adventure (2001–2003).

Worlds of Adventure was purchased by Cedar Fair in 2004 and the marine life area was converted into a water park for the 2005 season.

[5][6] Six Flags sold Worlds of Adventure to Cedar Fair in 2004,[7] resulting in the removal of all Looney Tunes and DC Comics branding from the park and the Geauga Lake name being reinstituted.

[3] On November 11, 2004, Cedar Fair unveiled the new park as Wildwater Kingdom, announcing that it would open in 2005 upon the completion of the first phase of construction,[3] which would include attractions such as ProSlide Tornado, an activity pool, an action river, and a new children's area with a multistory play structure.

[9][10][11] If the second phase had been completed, Wildwater Kingdom would have encompassed 20 acres (8.1 ha) to become one of the largest water parks in the United States.

[citation needed] On September 21, 2007, Cedar Fair announced that the amusement park portion of Geauga Lake & Wildwater Kingdom would not reopen in 2008.

[2] In their press release they stated, "Cedar Fair has been working cooperatively with both Bainbridge Township and the City of Aurora to redevelop the entire property into what will best benefit the surrounding communities.

After examining its long-range plans, Cedar Fair has determined that the time is right to begin this transition and will continue to work together with community leadership in the positive future development of the property."