1) Braided Channels: When a river separates into a number of smaller, interlocking channels ---> highly unstable. This feature tends to occur when a channel struggles to transport its load in a single channel, dropping a variety of loads containing coarse material. There a few conditions leading to braiding; a high variable discharge is needed and a channel gradient which is slightly steeper than that of a meandering stream.
2) Floodplains: Heavy precipitation leads to an increased discharge. BANKFULL STAGE occurs, The channel variables (depth, width and velocity) cannot cope with the sudden large amount of water. The river's banks burst and ALLUVIUM (fine sediments) are deposited, creating a floodplain. Floodplains may also be formed by the erosion of bluffs (steep banks or cliffs).
3) Levees: Raided ridges that are parallel to the edge of the channel and formed by repeated flooding of a river. Flooding causes velocity to drop, causing water to spill out of channel. The heaviest/coarse sediment are dropped. Time is required (centuries) to build/create the raised banks known as levees.
4) Deltas: A delta develops when the river meets it's end at the sea or lake. Any material carried is dumped and accumulated, forming a Delta. Deposition is increased if the water is salty. Salt particles group together, become heavier and deposit.
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