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A river is a natural freshwater stream that flows on land or inside caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of its course if it runs out of water, or only flow during certain seasons.
the location where a river flows into an ocean, sea, estuary, lake, or reservoir. Distributary or distributary channel: a stream that branches off and flows away from the main stream channel. Drainage basin: a region of land where water from rain or snowmelt drains downhill into another body of water, such as a river, lake, or reservoir. Draw
The basin of a river is the expanse of country bounded by a watershed (called a "divide" in North America) over which rainfall flows down towards the river traversing the lowest part of the valley, whereas the rain falling on the far slope of the watershed flows away to another river draining an adjacent basin. River basins vary in extent ...
This picture of the Nowitna River in Alaska shows two oxbow lakes – a short one at the bottom of the picture and a longer, more curved one at the middle-right. The picture also shows that a third oxbow lake is probably in the making: the isthmus or bank in the centre of the most prominent meander is very narrow – much narrower than the width of the river; eventually, the two sections of ...
This stream operating together with its environment can be thought of as forming a river ecosystem. River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts.
A bend or curve in a coastline, river, or other geographical feature typically indicating an especially large, open bay that is shallower than a sound. billabong In Australia, a branch of a river that is cut off when the main stem changes course, leaving an elongated and often ephemeral waterhole or oxbow lake. [4] biological diversity. Also ...
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The Colorado River is an approximately 862-mile-long (1,387 km) river [5] in the U.S. state of Texas. It is the 11th longest river in the United States [5] and the longest river with both its source and its mouth within Texas. [6] Its drainage basin and some of its usually dry tributaries extend into New Mexico.