Parts of a Drainage Basin
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Tributary
A smaller stream that joins the main channel.
Floodplain
Land which floods when a river overflows.
Distributaries
Smaller streams that separate from the main channel to form a delta.
Watershed
The imaginary boundary that separates one drainage basin from the next.
Source
The starting point of a river, usually on high ground.
Delta
Where the river channel splits into smaller streams at its mouth.
Mouth
Where the river flows into a lake, sea or ocean.
Confluence
Where two rivers join.
Channel
Carries river water.
