+River deltas are fertile [landforms](/wiki/landform) created where a [river](/wiki/river) meets a slower body of water, like an ocean or lake. They form as the river's current slows, depositing layers of [sediment](/wiki/sediment) over time, shaping rich, new ground often vital for ecosystems and human settlements.
+## See also
+- [River](/wiki/river)
+- [Estuary](/wiki/estuary)
+- [Floodplain](/wiki/floodplain)
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