river delta
Mouth's fertile triangle
A river delta is a landform created where a river deposits sediment as it empties into a larger body of water—an ocean, sea, or lake.
The spreading channels and accumulated soil often form a triangular shape resembling the Greek letter delta (Δ): the Nile delta, the Mississippi delta.
Deltas are typically fertile and densely populated.
- channelPassage for transmission
- tidal flatsCoastline exposed at low water
- marshGrassy waterlogged lowland
- floodplainFlood-prone riverside lowland
- flood seasonAnnual time of inundation
tributary · mudflat · Bangladesh · rice paddy · fishing village · water buffalo · silt · avulsion · brackish water · wetland · bird migration · bank · alluvial fan · rush · Nile · watershed · mangrove · Mississippi
- deltasdistributaries, distributary
- coastal featuresshore, coast, beach, bay, cliff
- habitatsforest, ocean, lake, pond, desert
- Mississippi RiverItasca, levee, riverboats, steamboat, towboats
- natural areasnature reserve, nature reserves, wilderness areas, wetland, wildlife refuge
- BangladeshBangladesh, Dhaka, Chittagong, Bangla, Sundarbans
river deltacanyon
Deep river-cut gorge
gorge · river gorge · ravine · river valley · slot canyon
river deltariver source
Origin of flowing water
headwaters · spring · mountain spring · drainage divide · upper reaches
river, rivers, delta, rivulet, riverbank, riverbed, riverboat, riverfront, deltoid