Drainage basin
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Drainage Basin. Drainage Basin – all the area of land drained by one river and its tributaries. Watershed or water divide. The edge of a drainage basin. The high ground that divides one drainage basin from another. Watershed. Watershed. Source - The point where a river starts.

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Drainage Basin

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Drainage basin

Drainage Basin


Drainage basin

Drainage Basin – all the area of land drained by one river and its tributaries


Drainage basin

Watershed or water divide. The edge of a drainage basin.

The high ground that divides one drainage basin from another.


Drainage basin

Watershed


Drainage basin

Watershed


Drainage basin

Source -

The point where a river starts.

The Mississippi with its source Lake Itasca at 450 m. above sea level in northern Minnesota.


Drainage basin

Tributary – the Missouri joins the Mississippi. A small river that flows into a bigger river is a tributary.

The Mississippi is joined by the Illinois River and the Missouri River at Saint Louis, and by the Ohio at Cairo, Illinois. The Arkansas River joins the Mississippi in the state of Arkansas.


Drainage basin

Confluence –

Where two rivers join.

The Missouri flows into the Mississippi. ‘The Big Muddy’ and ‘The Mighty Mississippi’. First explored 1804 by Lewis and Clark.


Drainage basin

Channel – where a river flows. Often between two banks and on one bed.

But not always.


Drainage basin

Mississippi – flood plainwith meaders and ox-bow lakes,


Drainage basin

Mouth – the end of a river.

The Mississippi has built a delta at its mouth.


Drainage basin

The Mississippi flows into the Gulf of Mexico. Hurricanes occur here! The delta can be swamped by the sea.


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