+A [River Delta](/wiki/river_delta) is a landform created when a [River](/wiki/river) deposits sediment as it flows into a slower-moving body of water, like an [Ocean](/wiki/ocean) or lake. These fertile, fan-shaped areas are vital ecosystems, rich in biodiversity where freshwater meets the sea.
+## See also
+- [Estuary](/wiki/estuary)
+- [Floodplain](/wiki/floodplain)
+- [Sediment](/wiki/sediment)
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