riffle


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Related to riffle: rifled, riddle

riffle

US and Canadian
a. a rapid in a stream
b. a rocky shoal causing a rapid
c. a ripple on water
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Riffle has been serving as interim Chief Operating Officer since the resignation of Jeffrey S.
This is prime time to hold a bait right in a riffle area, often in less than a foot of water.
The riffle was recovered from agricultural fields near Chak No 31 Hanjarwal, Changa Manga.
The police commissioner said 233 cows were recovered from the gang and that six live ammunition were retrieved alongside the riffle recovered from their dead boss.
After the comminution in the jaw crusher, the ground material falls directly into the Riffle Sample Splitter integrated in the collecting vessel and is automatically divided into representative samples.
Riffle's network of servers, called Mixnet, shuffles data packets received from various users in random order before relaying them on to the next server, thereby making one's Internet usage nearly impossible to plot.
"I think it is a pretty stark example of the kinds of things I was concerned about and that were the reasons why I left," says Riffle of MPP's new funding campaign.
During the carriage of the commodities, two of the owners came out with pump riffles and circular blades.
Within each reach we delineated three sites: one in each of three macrohabitat types (i.e., run, riffle, and pool).
Indicator species analysis prior to the spate showed that Baetidae (IndVal = 43.9, p = 0.007) and Hydropsychidae (IndVal = 47.5, p = 0.007) were indicative of riffle habitat due to high abundance and high frequency in riffle samples (Table 3).