ephemeral stream


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Related to ephemeral stream: Ephemeral creek, Ephemeral river

ephemeral stream

[ə′fem·ə·rəl ′strēm]
(hydrology)
A stream channel which carries water only during and immediately after periods of rainfall or snowmelt.
References in periodicals archive ?
Migration from the hyporheos is generally not considered to be a valid colonization source for ephemeral stream channels, since the water table is generally quite deep below the streambed; however, aestivating/ diapausing life stages within the dry streambed could establish new populations of a few taxa (e.
The study was concentrated at Doctors Park, located about 10 km north of Milwaukee, because this beach had high concentrations of black sand in 1998 that was concentrated near the ephemeral stream that flows to the lake across the beach.
25 km of ephemeral stream channel during the study period but had to treat segments repeatedly after large floods removed structures three times at the Lalio site and once at the Quandelacy site.
In the southwestern USA, monsoon thunderstorms can produce overland flow that results in spectacular flash floods in ephemeral stream channels (Lytle, 2000).
On the E side of the Jornada, five sites were on the W-facing mid-piedmont slope of the San Andres mountain range approximately 50 km NE of Las Cruces, New Mexico, and one site was on the W-facing piedmont slope of the Organ Mountain Range 5 km E of Las Cruces; (7) a loamy-sand alluvial fan ridge that was plowed in 1972 and in 1973 (C-RIDGE-RP), and (8) an adjacent ephemeral stream that was plowed at the same time (C-WASH-RP); (9) a ridge (C-RIDGE) that was not plowed (approximately 0.
He was also a leader in development, design, and construction of unique instrumentation for measuring runoff in sediment-laden ephemeral streams (Smith et al.
Land-use consultant Phil Blake, who previously worked for more than 30 years with the USDA National Resource Conservation Service, said growers should reinforce gullies and ephemeral streams with straw bale dikes, weirs and fiber rolls to slow down runoff and capture sediment and ash.
Between April 2011 and May 2014, 17 periodic targeted surveys for Giant Burrowing Frogs were conducted throughout the Mount Alfred State Forest and Mitchell River National Park, primarily after rainfall (>5 mm) and when it was expected that ephemeral streams would contain water.
Riparian areas were in tact-forested areas occurring within riparian management zones (RMZ) along perennial and ephemeral streams.
As a result, previously unprotected ephemeral streams and headwaters that are prone to destruction by mining and excavating practices could come under federal protection through permits.
The agency is now asserting that "intermittent, and ephemeral streams, are physically, chemically, and biologically connected to downstream rivers via channels and associated alluvial deposits" and are thus under EPA control.
Our studies in Walnut Gulch were critical in helping us determine that ephemeral streams, which flow for a short time after heavy rains, make significant contributions to ground-water replenishment.