Swimsuit or shorts and top — avoid cotton as it is not effective at keeping you warm and actually makes you cold when it gets wet.
Sunscreen (non-water soluble)
River sandals or old tennis shoes
Small plastic water bottle (fill at motel if possible)
Wool socks for sunburn protection of ankles (if you sunburn easily)
Personal items
Safety straps for glasses
Head covering, hat with tie straps
Optional Equipment
A dry tee-shirt and shorts for the trip back in the van
Disposable waterproof cameras are encouraged to capture some memorable shots of you and your family or friends