The Wisconsin Dells Mountain Coaster offers the spirit of a long-lasting water slide, only participants don't get wet. Riders on the Mountain Coaster sit in vehicles that look like go-karts on rails.

The Wisconsin Dells Mountain Coaster offers the spirit of a long-lasting water slide, only participants don't get wet. Riders on the Mountain Coaster sit in vehicles that look like go-karts on rails.

The Wisconsin Dells Mountain Coaster offers the spirit of a long-lasting water slide, only participants don't get wet. Riders on the Mountain Coaster sit in vehicles that look like go-karts on rails.

The Wisconsin Dells Mountain Coaster offers the spirit of a long-lasting water slide, only participants don't get wet. Riders on the Mountain Coaster sit in vehicles that look like go-karts on rails.

The Wisconsin Dells Mountain Coaster offers the spirit of a long-lasting water slide, only participants don't get wet. Riders on the Mountain Coaster sit in vehicles that look like go-karts on rails.

The Wisconsin Dells Mountain Coaster offers the spirit of a long-lasting water slide, only participants don't get wet. Riders on the Mountain Coaster sit in vehicles that look like go-karts on rails.

The math in the Dells is similarly lopsided. There are 17,000 summer jobs, but Wisconsin Dells and Lake Delton have a combined population of roughly 6,000, Tollaksen said.