Discussion
A ................... tributary is formed when tributaries in a flood plain may not be able to enter the main river because of raised levees on either bank of the river.
Answer: A
The answer is a deferred tributary, also called a yazoo stream.
Natural levees on the banks of a large river stand higher than the floodplain behind them. A tributary crossing the floodplain cannot break through the levee, so it runs parallel to the main river, often for long distances, before it finally joins it downstream. The Yazoo River, which runs beside the Mississippi before joining it at Vicksburg, gives the type its other name.
An anabranch is a channel that leaves a river and rejoins it downstream; anastomosing describes a pattern of several interconnected channels. Solitary is not a recognised class of tributary.
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