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1. Compare - without doubt the biggest advantage that the Stream offers shoppers today is the ability to compare thousands of Stream at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.

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3. Testimonials - don't know anybody that has bought a Stream? Wrong! If the Stream is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.

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6. Returns - still worried that even after all of the above your Stream wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.

7. Feedback - happy with your Stream then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.

8. Security - check for the yellow padlock on the Stream site before you buy, and the s after http:/ /i.e. https:// = a secure site

9. Contact - got a question about Stream, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.

10. Payment - ready to pay for your Stream, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.



A stream, brook, Beck (disambiguation), Burn (stream), creek, crick, Kill (disambiguation), rill, syke, bayou, or run is a body of water with a current (water), confined within a stream bed and banks. Streams are important as conduits in the water cycle, instruments in aquifer recharge, and corridors for fish and wildlife migration. The biological habitat in the immediate vicinity of a stream is called a riparian zone. Given the status of the ongoing Holocene extinction event, streams play an important corridor role in connecting Habitat fragmentations and thus in conserving biodiversity. Stream is also an umbrella term used in the scientific community for all flowing natural waters, regardless of size. The study of streams and waterways in general is known as surface hydrology and is a core element of environmental geography.

Types of stream River: A large natural stream, which may be a waterway.Creek (North America and Australia): A small to medium sized natural stream. Sometimes navigable by motor craft and may be intermittent. In some dialects it is pronounced: "crick".Creek (tidal) (UK and India): A tidal inlet, typically in a saltmarsh or Mangrove. Alternatively, between enclosed and drained, former saltmarshes or swamps. In these cases, the stream is the tide stream, the course of the seawater through the creek channel at low and high tide.Tributary: A contributory stream, or a stream which does not reach the sea but joins another river (a parent river). Sometimes also called a branch or fork.Brook: A stream smaller than a creek, especially one that is fed by a spring (hydrosphere) or seep. It is usually small and easily ford (river). A brook is characterized by its shallowness and its stream bed being composed solely of rocks.Crick: In some regions, usually equivalent to "creek". In other regions, may be differentiated from "creek" as follows: smaller than a creek; deeper than creeks of the same width.

. Rivers of this size are often referred to as "creeks.", Nova Scotia torrent, Italy.

Other names for streams In the United Kingdom, there are several regional names for a stream:

In North America:

Parts of a stream Spring (hydrosphere): The point at which a stream emerges from an underground course through unconsolidated sediments or through caves. A stream can, especially with caves, flow aboveground for part of its course, and underground for part of its course.Source (river or stream): The Spring (hydrosphere) from which the stream originates, or other point of origin of a stream.Headwaters: The part of a stream or river proximate to its source. The word is most commonly used in the plural where there is no single point source.Confluence (geography): The point at which the two streams merge. If the two tributaries are of approximately equal size, the confluence may be called a fork.Run: A somewhat smoothly flowing segment of the stream.Stream pool: A segment where the water is deeper and slower moving.Riffle: A segment where the flow is shallower and more turbulence.Channel (geography): A depression created by constant erosion, that carries the stream's flow.Floodplain: Flatlands on either side of the stream that are subject to seasonal flooding.Stream bed: The bottom of a stream.Gauging station: A point of demarkation along the route of a stream or river, used for reference marking or water monitoring.Thalweg: The river's longitudinal section, or the line joining the deepest point in the channel at each stage from source to mouth.Wetted perimeter: The line on which the stream's surface meets the channel walls.Nickpoint: The point on a stream's profile where a sudden change in stream gradient occurs.Waterfall or cascade: The fall of water where the stream goes over a sudden drop called a nickpoint; some nickpoints are formed by erosion when water flows over an especially resistant stratum, followed by one less so. The stream expends kinetic energy in "trying" to eliminate the nickpoint.River delta: The point at which the stream discharges, possibly via an estuary or river delta, into a static body of water such as a lake or ocean.

Characteristics of streams , Sweden.

Ranking Streams in geographic terms are awarded order designations. A stream of the Strahler Stream Order is a blue-line stream which does not have any other blue-line stream feeding into it. A stream of the second order is one which is formed by the joining of two or more blue-line streams. A third-order stream is one below the confluence of two or more second-order streams; a fourth-order stream is formed by the confluence of at least two third-order streams, and so forth.Gradient The gradient of a stream is a critical factor in determining its character, and is entirely determined by its base level of erosion. The base level of erosion is the point at which the stream either enters the ocean, a lake or pond, or enters a stretch in which it has a much lower gradient, and may be specifically applied to any particular stretch of a stream.In geologic terms, the stream will erode down through its bed to achieve the base level of erosion throughout its course. If this base level is low, then the stream will rapidly cut through underlying strata and have a steep gradient, and if the base level is relatively high, then the stream will form a flood plain and meanders. Meander Meanders are looping changes of direction of a stream caused by the erosion and deposition of bank materials. These may be somewhat sine-wave in form. Typically, over time, the meanders don't disappear but gradually migrate downstream.If some resistant material slows or stops the downstream movement of a meander, a stream may erode through the neck between two legs of a meander to become temporarily straighter, leaving behind an arc-shaped body of water termed an oxbow lake or bayou. A flood may also result in a meander being cut through in this way. Profile Typically, streams are said to have a particular profile, beginning with steep gradients, no flood plain, and little shifting of channel (geography)s, eventually evolving into streams with low gradients, wide flood plains, and extensive meanders. The initial stage is sometimes termed a "young" or "immature" stream, and the later state a "mature" or "old" stream. However, a stream may meander for some distance before falling into a "young" stream condition.

== Intermittent and ephemeral streams ==



In the United States, an intermittent stream is one that only flows for part of the year and is marked on topographic maps with a line of blue dashes and dots. A wash or desert wash is normally a dry streambed in the deserts of the American Southwest which flows only after significant rainfall. Washes can fill up quickly during rains, and there may be a sudden torrent of water after a thunderstorm begins upstream, such as during monsoonal conditions. These flash floods often catch travellers by surprise. An intermittent stream can also be called an arroyo (creek) in Latin America, or a wadi in the Arabic-speaking world.

In Italy an intermittent stream is termed a torrent . In full flood the stream may or may not be "torrential" in the dramatic sense of the word, but there will be one or more seasons in which the flow is reduced to a trickle or less. Typically torrents have Apennine mountains rather than Alpines sources, and in the summer are fed by little precipitation and no melting snow. In this case the maximum discharge will be during the spring and autumn. However there are also glacial torrents with a different seasonal regime.

A blue-line stream is one which flows for most or all of the year and is marked on topographic maps with a solid blue line. In Australia, an intermittent stream is usually called a creek, and marked on topographic maps with a solid blue line.

Generally, streams that form only during and immediately after precipitation are termed ephemeral. There is no clear demarkation between surface runoff and ephemeral stream.

Drainage basins The entire basin drained by the stream is termed the drainage basin (also known in North America as a “watershed” In British English, however, a watershed is the dividing line between drainage basins, in other words a water divide and in British English as a “catchment”). A basin will typically be composed of smaller basins. For instance, the Continental Divide in North America divides the Atlantic Ocean basin from the Pacific Ocean basin, but the Atlantic Ocean basin may be first divided into the Atlantic Ocean drainage and the Gulf of Mexico drainage. This delineation within the United States is termed the Eastern Continental Divide. The Gulf of Mexico basin may be divided into Mississippi River basin and a number of smaller basins, such as the Tombigbee River basin.

The Mississippi River basin includes the Ohio River basin, which in turn includes the Kentucky River basin, and so forth.

Notes External links See also



A stream, brook, Beck (disambiguation), Burn (stream), creek, crick, Kill (disambiguation), rill, syke, bayou, or run is a body of water with a current (water), confined within a stream bed and banks. Streams are important as conduits in the water cycle, instruments in aquifer recharge, and corridors for fish and wildlife migration. The biological habitat in the immediate vicinity of a stream is called a riparian zone. Given the status of the ongoing Holocene extinction event, streams play an important corridor role in connecting Habitat fragmentations and thus in conserving biodiversity. Stream is also an umbrella term used in the scientific community for all flowing natural waters, regardless of size. The study of streams and waterways in general is known as surface hydrology and is a core element of environmental geography.

Types of stream River: A large natural stream, which may be a waterway.Creek (North America and Australia): A small to medium sized natural stream. Sometimes navigable by motor craft and may be intermittent. In some dialects it is pronounced: "crick".Creek (tidal) (UK and India): A tidal inlet, typically in a saltmarsh or Mangrove. Alternatively, between enclosed and drained, former saltmarshes or swamps. In these cases, the stream is the tide stream, the course of the seawater through the creek channel at low and high tide.Tributary: A contributory stream, or a stream which does not reach the sea but joins another river (a parent river). Sometimes also called a branch or fork.Brook: A stream smaller than a creek, especially one that is fed by a spring (hydrosphere) or seep. It is usually small and easily ford (river). A brook is characterized by its shallowness and its stream bed being composed solely of rocks.Crick: In some regions, usually equivalent to "creek". In other regions, may be differentiated from "creek" as follows: smaller than a creek; deeper than creeks of the same width.

. Rivers of this size are often referred to as "creeks.", Nova Scotia torrent, Italy.

Other names for streams In the United Kingdom, there are several regional names for a stream:

In North America:

Parts of a stream Spring (hydrosphere): The point at which a stream emerges from an underground course through unconsolidated sediments or through caves. A stream can, especially with caves, flow aboveground for part of its course, and underground for part of its course.Source (river or stream): The Spring (hydrosphere) from which the stream originates, or other point of origin of a stream.Headwaters: The part of a stream or river proximate to its source. The word is most commonly used in the plural where there is no single point source.Confluence (geography): The point at which the two streams merge. If the two tributaries are of approximately equal size, the confluence may be called a fork.Run: A somewhat smoothly flowing segment of the stream.Stream pool: A segment where the water is deeper and slower moving.Riffle: A segment where the flow is shallower and more turbulence.Channel (geography): A depression created by constant erosion, that carries the stream's flow.Floodplain: Flatlands on either side of the stream that are subject to seasonal flooding.Stream bed: The bottom of a stream.Gauging station: A point of demarkation along the route of a stream or river, used for reference marking or water monitoring.Thalweg: The river's longitudinal section, or the line joining the deepest point in the channel at each stage from source to mouth.Wetted perimeter: The line on which the stream's surface meets the channel walls.Nickpoint: The point on a stream's profile where a sudden change in stream gradient occurs.Waterfall or cascade: The fall of water where the stream goes over a sudden drop called a nickpoint; some nickpoints are formed by erosion when water flows over an especially resistant stratum, followed by one less so. The stream expends kinetic energy in "trying" to eliminate the nickpoint.River delta: The point at which the stream discharges, possibly via an estuary or river delta, into a static body of water such as a lake or ocean.

Characteristics of streams , Sweden.

Ranking Streams in geographic terms are awarded order designations. A stream of the Strahler Stream Order is a blue-line stream which does not have any other blue-line stream feeding into it. A stream of the second order is one which is formed by the joining of two or more blue-line streams. A third-order stream is one below the confluence of two or more second-order streams; a fourth-order stream is formed by the confluence of at least two third-order streams, and so forth.Gradient The gradient of a stream is a critical factor in determining its character, and is entirely determined by its base level of erosion. The base level of erosion is the point at which the stream either enters the ocean, a lake or pond, or enters a stretch in which it has a much lower gradient, and may be specifically applied to any particular stretch of a stream.In geologic terms, the stream will erode down through its bed to achieve the base level of erosion throughout its course. If this base level is low, then the stream will rapidly cut through underlying strata and have a steep gradient, and if the base level is relatively high, then the stream will form a flood plain and meanders. Meander Meanders are looping changes of direction of a stream caused by the erosion and deposition of bank materials. These may be somewhat sine-wave in form. Typically, over time, the meanders don't disappear but gradually migrate downstream.If some resistant material slows or stops the downstream movement of a meander, a stream may erode through the neck between two legs of a meander to become temporarily straighter, leaving behind an arc-shaped body of water termed an oxbow lake or bayou. A flood may also result in a meander being cut through in this way. Profile Typically, streams are said to have a particular profile, beginning with steep gradients, no flood plain, and little shifting of channel (geography)s, eventually evolving into streams with low gradients, wide flood plains, and extensive meanders. The initial stage is sometimes termed a "young" or "immature" stream, and the later state a "mature" or "old" stream. However, a stream may meander for some distance before falling into a "young" stream condition.

== Intermittent and ephemeral streams ==



In the United States, an intermittent stream is one that only flows for part of the year and is marked on topographic maps with a line of blue dashes and dots. A wash or desert wash is normally a dry streambed in the deserts of the American Southwest which flows only after significant rainfall. Washes can fill up quickly during rains, and there may be a sudden torrent of water after a thunderstorm begins upstream, such as during monsoonal conditions. These flash floods often catch travellers by surprise. An intermittent stream can also be called an arroyo (creek) in Latin America, or a wadi in the Arabic-speaking world.

In Italy an intermittent stream is termed a torrent . In full flood the stream may or may not be "torrential" in the dramatic sense of the word, but there will be one or more seasons in which the flow is reduced to a trickle or less. Typically torrents have Apennine mountains rather than Alpines sources, and in the summer are fed by little precipitation and no melting snow. In this case the maximum discharge will be during the spring and autumn. However there are also glacial torrents with a different seasonal regime.

A blue-line stream is one which flows for most or all of the year and is marked on topographic maps with a solid blue line. In Australia, an intermittent stream is usually called a creek, and marked on topographic maps with a solid blue line.

Generally, streams that form only during and immediately after precipitation are termed ephemeral. There is no clear demarkation between surface runoff and ephemeral stream.

Drainage basins The entire basin drained by the stream is termed the drainage basin (also known in North America as a “watershed” In British English, however, a watershed is the dividing line between drainage basins, in other words a water divide and in British English as a “catchment”). A basin will typically be composed of smaller basins. For instance, the Continental Divide in North America divides the Atlantic Ocean basin from the Pacific Ocean basin, but the Atlantic Ocean basin may be first divided into the Atlantic Ocean drainage and the Gulf of Mexico drainage. This delineation within the United States is termed the Eastern Continental Divide. The Gulf of Mexico basin may be divided into Mississippi River basin and a number of smaller basins, such as the Tombigbee River basin.

The Mississippi River basin includes the Ohio River basin, which in turn includes the Kentucky River basin, and so forth.

Notes External links See also



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