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In geomorphology, a pluvial refers to a geologic episode, change, process, deposit, or feature that is the result of the action or effects of rain. Sometimes, it also refers to the fluvial action of rainwater flowing in a stream channel, including a flood, known as a pluvial flood, that is the direct result of excessive precipitation. [1] [2]
There are several types of urban flooding, each with a different cause. City planners distinguish pluvial flooding (flooding caused by heavy rain), fluvial flooding (caused by a nearby river overflowing its banks), or coastal flooding (often caused by storm surges). Urban flooding is a hazard to both the population and infrastructure.
Pluvial, which is (almost) purely based on seasonal rainfall and not on snow. A peak is usually in winter, although it can occur at any point along the year. If it occurs in the time of monsoons, it is sometimes called tropical pluvial. Nivo-pluvial, with a nival peak in late spring and a pluvial peak in the fall. The main minimum is in winter.
A flash flood is a rapid and sudden flooding of low-lying areas. It typically occurs within a few hours, often even minutes, of heavy rainfall. ... Flash flood meaning, causes, safety tips: NJ ...
This word refers to a large, dark-brown animal that lives in (or around) African rivers. They are renowned for their barrel-shaped bodies, enormous heads and short legs.
One is a flash flood watch, which means that conditions are favorable for flash flooding, and the other is a flash flood warning, meaning that a flash flood is occurring or one will occur imminently and is usually issued when there are strong weather radar echoes for an area that is prone to flash flooding. [2]
Diluvium was initially argued to have been deposited by the action of extraordinary floods of vast extent, specifically the Noachian Flood. [1] [2] In 1822 and 1823, William Buckland published the term diluvium in his monograph Reliquiae Diluvianae [3] and in G. A. Mantel’s monograph about the geology and paleontology of the county of Sussex. [4]
Great Sheffield Flood, Sheffield, England: 31 May 1889: 2200 dam failure Johnstown Flood Johnstown, Pennsylvania, U.S. 11 September 1891: 359 heavy rain Consuegra, Castilla-La Mancha, Spain: 14 June 1903: 247 thunderstorm Heppner Flood of 1903, Oregon, U.S. Second-deadliest flash flood in the United States; killed almost a quarter of the town's ...