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
Chute (racecourse) turn joins to the backstretch would be 5 furlongs (1,106 m) from the finish. In order to hold races at the distance of – the most common distance of American thoroughbred horse races – the backstretch is extended by an extra 1/16 of a mile (101 m). This is the most common situation where a chute is pressed into service. At some tracks, this chute is longer, so that races can be run at as well. Often a second chute will be placed at the top of the stretch, extending the length of the straightaway from the top of the