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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.
Ria – Coastal inlet formed by the partial submergence of an unglaciated river valley; River delta – Silt deposition landform at the mouth of a river; Salt marsh – Coastal ecosystem between land and open saltwater that is regularly flooded; Sea cave – Cave formed by the wave action of the sea and located along present or former coastlines
The Lena river delta in Russia is formed from the river's sediment. While rivers may flow into lakes or man-made features such as reservoirs, the water they contain will always tend to flow down toward the ocean. [3] However, if human activity siphons too much water away from a river for other uses, the riverbed may run dry before reaching the ...
The Daugava (/ ˈ d aʊ ɡ ə v ə / DOW-gə-və), [a] also known as the Western Dvina [b] or the Väina River, [c] is a large river rising in the Valdai Hills of Russia that flows through Belarus and Latvia into the Gulf of Riga of the Baltic Sea.
In physical geography and hydrology, a channel is a landform on which a relatively narrow body of water is situated, such as a river, river delta or strait. While channel typically refers to a natural formation, the cognate term canal denotes a similar artificial structure.
The current form of the Mississippi River basin was largely shaped by the Laurentide Ice Sheet of the most recent Ice Age. The southernmost extent of this enormous glaciation extended well into the present-day United States and Mississippi basin.
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The River Severn's current form is the result of a multi-million year history and complex underlying geology but is in part the result of glaciation during the last ice age in the Pleistocene epoch of the Quaternary period. [24] Within Wales, the river runs through a landscape formed in Ordovician and Silurian rocks.