Plunge pool height of fall, the volume of water, the resistance of the rock below the pool and other factors. The impacting and swirling water, sometimes carrying rocks within it, abrades the riverbed into a basin, which often features rough and irregular sides. Plunge pools can remain long after the waterfall has ceased flow or the stream has been diverted. Several examples of former plunge pools exist at Dry Falls in the Channeled Scablands of eastern Washington. Plunge pools are fluvial features of erosion which occur in the youthful stage of river development, characterized by steeper gradients and faster water flows. Where
Shoot the Chute climb a 121-foot (36.8 m) lift-hill, round a curve, and descend a 115-foot (35 m) water chute at a 77.8-degree slope. Upon landing in the lagoon below, the boats create a 45-foot (13.7 m) high splash that drenches riders as well as spectators standing on an observation bridge overlooking the ride. The ride uses an adjustable electromagnetic braking system to control the volume of the splash. A similar ride, Hydro, was later constructed at Oakwood Theme Park in Wales, UK Holiday World & Splashin' Safari in Santa Claus, Indiana, built an even larger Shoot the Chute ride named "Pilgrim's Plunge."