As a river flow slows, the sediment starts to settle out. The water at the river's edge often has the lowest flow or movement so there will be more sedimentation.
estuary
delta
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The heaviest sediment will always be deposited first. Which sediment is the heaviest in that flowage can vary widely.
The greater the speed the less sediment deposited. A delta is where a river slows way down and sediment is deposited at the mouth of the river.
the water slows down, causing the sediment to sink
Because water slows down and sediment drops to the bottom
It is called a delta
water erodes a canyon by carrying sediment from the rock walls down the river
A delta is a triangular deposit of sediment at the end of a river or stream. It happens when the strong current of the river slows down and deposits the sediments it has been transporting.