Waterloo / Lost Island Waterpark KOA

Open All Year

Reserve: 800-562-2483

Reserve: 800-562-2483

Info: 319-233-3485

Info: 319-233-3485

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4550 Hess Rd

Waterloo, IA 50701

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All Sites

Check-in: 3:00 pm, Check-out: 11:00 am

Camper Rating 4.5 out of 5

Based on 1000 Reviews

General Campground Information

Check-in and Check-out times

RV and tent sites check-in/out times are 12:00 P.M. Cabins check-in is 3:00 P.M. and check-out is 11:00 A.M. If there are any questions please give us a call!

Deluxe Lodge Security Deposit

To encourage our guests to take good care of their accommodations at Waterloo/Lost Island KOA, we charge a $125.00 security deposit. This deposit is due at check-in and needs to be on a credit card. Provided there are no issues, this deposit is fully refundable. We do expect that there will be absolutely no damage incurred by you or your party during your stay. We expect that you will treat your Lodge as if it were your own and that you will leave your Lodge clean, neat and undamaged at check-out.

Full forfeiture of your security deposit occurs for any of the following: unauthorized pet occupancies, smoking inside any unit, exceeding the occupancy limits of your initial reservation.

Quiet Hours

Our posted quiet hours are 10:30 P.M. Please respect your neighbors by keeping noises to a minimum.

Visitor Policy

All visitors much check-in at the office to obtain a pass for each site. There is additional parking around campground and convenience store if needed.


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Do not include the length of your tow or pull vehicle.

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