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The Source of River

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River; River Channel and Tributaries; Source of River; River Gorge; Freshwater For Life; Waterfalls; Rapids In River; Torrent Ducks – Live and Find Food in Rapids; Salmons – the Anti-rapids of river; River Meander; Nutrients And Life; Sediments And The Mud; Floodplains; River Deltas; Junction of Rivers; Damage by Rivers; Dams Over Rivers; Spoiling of Rivers

Every river has a 'source', a place where the river begins its journey. The source of a river is usually found in high places such as hills or mountains. A river can have more than one source.

Springs: Some rivers begin where a natural spring releases water from underground.

 Spring

Rainfall and melting snow: Some rivers begin in mountains or hills, where rain water or snowmelt collects and forms small channels.

 

 Left - Rainfall; Right - Melting Snow

At first, the channels are small and are called rills. As more water enters the channels they grow forming gullies (larger channels). The streams in the gullies eventually become big enough to form a river. 

Lakes: The source of some rivers is a lake. The source of the River Nile is Lake Victoria, in Burundi.

Lake

Bogs: In some places, rain water can't sink into the ground as the ground is too wet already. The bogs are characterized by spongy peat deposits, acidic waters and a floor covered by a thick carpet of sphagnum moss. The water forms a bog. The water flows out of the bog to form lakes and streams.

Bog

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