Thunder Canyon is a river rapids ride located at three Six Flags amusement parks.

[1] The ride closes every year in late August to be transformed into Cornstalkers 2.0: Revenge of the Pumpkin Heads, an attraction for HalloWeekends.

It can be found along the back path leading to Wildwater Kingdom while the ride itself is placed on four acres of land within the track of the Cedar Creek Cannonball.

The attraction is 1,640 feet long, uses 200 horsepower pumps to generate the river using one million gallons of water at a rate of 112,000 gallons per minute, and was designed by Barr Engineering for the cost of $3.8 Million.

It is also known for its special use of its water reservoir, which instead of being hidden back stage, is used as a dramatic million gallon backdrop for the ride.