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
Funnel cloud causes the rotation on a horizontal axis, which, when deflected vertically by atmospheric conditions, can become a funnel cloud. They are a common sight along the Pacific Coast of the United States, particularly in the spring or fall. On July 29, 2013, a cold-core funnel cloud touched down as an EF0 tornado in Ottawa, Canada, causing extensive damage in the form of downed trees on a golf course. No advance weather watches or warnings were issued by Environment Canada, and the tornado was spawned from one of the few non-severe storm clouds moving through the area. Funnel cloud A funnel