riffles

listen to the pronunciation of riffles
English - English
A riffle is a raised area of the active channel that results in an increase in flow velocity Riffle areas are typically preceded by pools and represent the fastest current in a given river or stream
Shallow, choppy water that attracts fish
a characteristic of moving water that indicates where brown trout are likely to be found Is comprised of fast, shallow water running over gravel or small racks that is often found where the water widens
Riffles are relatively fast flowing water that has a substantial amount of turbulence For the fisheries survey three types of riffles were recorded including low gradient riffles, high gradient riffles and cascades
steeper portions of stream channels, typically where water flows quickly and shallow
Shallow disturbed part of a stream
shallow areas in a stream where water flows swiftly over gravel and rock
fast, shallow waters of a stream
Fast sections of a stream where shallow water races over stones and gravel They usually support a wider variety of bottom organisms than other stream sections
a rocky shoal or sandbar lying just below the surface of a waterway
riffle
A trough or sluice having cleats, grooves, or steps across the bottom for holding quicksilver and catching particles of gold when auriferous earth is washed. Also one of the cleats, grooves or steps in such trough
riffle
To prepare samples of material using a riffler
riffle
A fast-flowing, shallow part of a stream
riffle
To ruffle with a rippling action
riffle
To skim or flick through the pages of a book
riffle
A quick skim through the pages of a book
riffle
A trough or sluice having cleats, grooves, or steps across the bottom for holding quicksilver and catching particles of gold when auriferous earth is washed; also, one of the cleats, grooves, or steps in such a trough
riffle
Also called ripple
riffle
Applying pressure and drawing the finger or thumb across the edge of a deck, making the distinctive riffle sound
riffle
twitch or flutter; "the paper flicked"
riffle
A rapid in a stream
riffle
A shallow rapid with very small waves, often over a sand or gravelbottom Does not rate a grade on either the Western or the International scale of difficulty
riffle
If you riffle through the pages of a book or riffle them, you turn them over quickly, without reading everything that is on them. I riffled through the pages until I reached the index. = flick. to move and quickly look at pieces of paper or the pages of a book, magazine etc flip through (Perhaps from ripple + ruffle)
riffle
shuffle (playing cards) by separating the deck into two parts and riffling with the thumbs so the cards intermix
riffle
a shallow part of a stream where the water flows brokenly, or a patch of waves or ripples on water
riffle
A shallow, gravelly area of streambed with swift current Used for spawning by salmonids and other fishes
riffle
– Mail prepared so that 10 or more contiguous mailpieces are addressed to the same ZIP Code destination Also to check that mail is in ZIP Code sequence by thumbing quickly through the top of a tray of mail or along the side of a bundle of mail
riffle
n A small disturbance in the water flow of a calm stream caused by water hitting the rocks in the stream bed
riffle
A series of cleats in the bottom of a rocker or sluice designed to catch free gold passing through, frequently with the aid of quicksilver
riffle
A bar of material with a rippled surface deposited on the bed of a river or stream The smooth flow of water is disrupted when it passes over a riffle causing it to mix and allowing it to take up more oxygen Riffles can harbour rich ASSEMBLAGES of freshwater INVERTEBRATES and MOSSES
riffle
A sample splitter
riffle
a small wave on the surface of a liquid
riffle
A shallow part of the stream where water flows swiftly over completely or partially submerged obstructions to produce surface agitation
riffle
A channel feature characterized by swiftly flowing, turbulent water and exposed substrate, usually cobble and boulder dominated
riffle
a form of shuffling in which the cards from two halves of the pack are interleaved
riffle
Section of stream containing gravel or rubble, in which surface water is at least slightly turbulent and current, is swift enough that the surface of the gravel and rubble is kept fairly free from sand and silt
riffle
shuffling by splitting the pack and interweaving the two halves at their corners
riffle
A ripple in a stream or current of water; also, a place where the water ripples, as on a shallow rapid
riffle
look through a book or other written material; "He thumbed through the report"; "She leafed through the volume"
riffle
A shallow, gravelly section in a stream where water is breaking over rocks or other partially submerged organic debris with swift current Used for spawning by salmons and other fishes
riffle
{i} act of shuffling cards; part of a stream with a strong swift current, rapid
riffle
Shallow rapids with surface agitation, but no waves
riffle
{f} shuffle cards; leaf through, thumb through; turn pages quickly
riffle
A rapid or stream running over a rocky shoal
riffle
shuffling by splitting the pack and interweaving the two halves at their corners shuffle (playing cards) by separating the deck into two parts and riffling with the thumbs so the cards intermix
riffle
A rapid and shallow area in a stream where oxygenation often occurs
riffle
A reach of stream in which the water flow is rapid and usually more shallow than the reaches above and below Natural streams often consist of a succession of pools and riffles
riffle
n - A stretch of slightly choppy water caused by shallow rocks or deadfall in the stream
riffle
stir up (water) so as to form ripples
riffles
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