Deltaic lobe

As the sediment builds up from this delta, the river will break away from its single channel and the mouth will be pushed outwards, forming a deltaic lobe.

When the alluvium, the smallest sediment carried by the deltaic lobe, is deposited and new land is formed, the resulting formation is considered a delta.

As the deltaic lobe progrades, the channel bed gradient is lowered, resulting in a sedimentary push upstream.

Lobes are rarely distinguished from one another in high tide settings as tidal currents favor channel stability and suppress avulsions.

The Han River delta is shaped by its tidal changes in the summer and winter as well as its shallow and steep basins.

The cuspate deltaic lobe is defined by its abrupt rate of discharge from river to body of water, and the creation of multiple cusp systems built up into separate but active distributaries.

An abrupt southward migration of the river mouth left the first cusp abandoned and a new deltaic lobe prograded.

[10] Gilbert deltaic lobes are defined by their movement of coarse-grained materials, relatively large sizes, and steep slopes into basins.

Delta lobes in the Mississippi River Delta . Each lobe was the primary outlet for a while, but was abandoned when the flow shifted.
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The heavily-populated Nile delta , showing an arcuate margin shaped by longshore drift
The Ganges Delta has channels primarily cut by tides and storm surges .
This part of the Mississippi River Delta is a classic bird's-foot delta. Sediment is deposited along the margins of the current, extending the delta; the sea conditions in the Gulf of Mexico allow sediment to accumulate without greatly rearranging it.
Outline of the Tiber River delta