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The ephemeral nature of Granite Plateau Creek on the Mawson Plateau means the creek is usually a series of waterholes The travelling festival Burning Man was described by one scholar as the "very definition of ephemerality".
Ephemeral waterfalls only flow after a rain or a significant snowmelt. [3] [4] [5] Plunge. Water descends vertically, losing contact with the bedrock surface.
The Doña Ana County Flood Commission in the U.S. state of New Mexico defines an arroyo as "a watercourse that conducts an intermittent or ephemeral flow, providing primary drainage for an area of land of 40 acres (160,000 m 2) or larger; or a watercourse which would be expected to flow in excess of one hundred cubic feet per second as the result of a 100 year storm event."
There is no clear demarcation between surface runoff and an ephemeral stream, [49]: 58 and some ephemeral streams can be classed as intermittent—flow all but disappearing in the normal course of seasons but ample flow (backups) restoring stream presence — such circumstances are documented when stream beds have opened up a path into mines or ...
Intermittent rivers do not rely on, but may be supplemented, by stormwaters or other runoff from upstream sources. [10] Their channels are well-defined, [11] as compared to ephemeral streams, which may or may not have a defined channel, and rely mainly on storm runoff, as their aquatic bed is above the water table. [12]
Ephemeral lake is a short-lived lake or pond. [49] If it fills with water and dries up (disappears) seasonally it is known as an intermittent lake [50] They often fill poljes. [51] Dry lake is a popular name for an ephemeral lake that contains water only intermediately at irregular and infrequent intervals. [36] [52]
Depending on water losses, precipitation, and inflow (e.g., a spring, a tributary, or flooding), the temporal result of a lake in a sink may change. The lake could be a persistent lake, an intermittent lake, a playa lake (temporarily covered with water), or an ephemeral lake, which completely disappears (e. g. by evaporation) before reappearing in wetter seasons. [3]
A river is a natural flow of freshwater that flows on or through land towards another body of water downhill. [1] This flow can be into a lake, an ocean, or another river. [1] A stream refers to water that flows in a natural channel, a geographic feature that can contain flowing water. [2] A stream may also be referred to as a watercourse. [2]