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
Geographical renaming Geographical renaming Geographical renaming is the changing of the name of a geographical feature or area. This can range from the change of a street name to a change to the name of a country. Some names are changed locally but the new names are not recognised by other countries, especially when there is a difference in language. Other names may not be officially recognised but remain in common use. Many places have different names in different languages, and a change of language in official or general use has often resulted in what is arguably a change of name. There