GILFORD, N.H. -- A costumed skier races down a slope, hits a pond and hydroplanes halfway across. He pirouettes and then plunges into the icy water before jumping up and waving to the cheering crowd.

Small says Killens Pond State Park Waterpark is a one of a kind attraction for Delaware State Parks. A few years ago, the park had several slides that unfortunately outlived their structural integrity ...