riffle

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riffle

US and Canadian
a. a rapid in a stream
b. a rocky shoal causing a rapid
c. a ripple on water

riffle

[′rif·əl]
(hydrology)
A shallows across a stream bed over which water flows swiftly and is broken into waves by submerged obstructions.
Shallow water flowing over a riffle.
References in periodicals archive ?
com, accessed 22 January 2013), we viewed satellite imagery of Shoal Creek to locate reaches having wadeable riffles and runs suitable for sampling.
The owner with riffle at the roof also fired into air randomly.
salmoides and Lepomis) in pools, sometimes found in runs, but never found in riffles (Table 3).
Keywords: flood, flow refugia, Kokosing River, pools, riffles
If dams on small rivers are impediments to catfish movement, riffles are attractive to catfish most of the year and magnets at certain times.
Thus, riffles substrates are heterogeneous allowing a wide variety of niches for invertebrates to inhabit.
Trained as killer machines, they are to master riffle shooting to represent the country, which they tried to divide a few years ago.
While riffles are made in Germany and are mostly bought for hunting, pistols are used for self-defence.
When rivers are dammed, shoals and riffles are replaced with reservoirs, and the swiftly-moving water the limpets require is stilled.
Riffles are areas of high gradient with fast-flowing, turbulent water and rocky substrates; runs are areas with relatively slower-flowing water, generally deeper than the riffles, with a smaller gradient and no turbulence; and pools are the deepest waters of all three, with a slow current and a more-homogeneous sediment (i.
The theme of the story is very similar to that that has been revolving in different television dramas, which is the pride felt by those who fought for their freedom using their riffles and horses.
Yuba), while in others, channel and floodplain sediments were scoured away by long-duration low flows that focused on riffles (a river's higher elevation areas; pools are lower elevation) and infrequent floods that affected other channel land forms after the dam cut off the re-supply of sediment (e.