Rock River Rapids is Derby’s outdoor waterpark, with a zero-entry pool, lap pool, lazy river, and numerous slides and play structures. This is a popular spot for families with kids!
They also have a concession stands, lockers (bring your own lock), lounge chairs, bathhouse, and a gift counter.
The waterpark is open during the summer months, typically after Memorial Day in May until school starts in August. The hours are 12:30 p.m. to 7 p.m. daily.
They often host events, and one of the best deals you can get on an ongoing basis throughout the summer is the “5 after 5” pass: $5 admission after 5 p.m. every day. Season passes are only $70. Regular admission is $9 for adults, $8 for kids 3-17 and folks 60+, and free for kids 2 and younger.
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