Explain the similarities and differences between levees and deltas.Use the following words in your answers:flooding,load,deposition and energy
Answers
Answer:
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Answer:
Delta levees differ from river levees in that they continuously hold back water, more closely resembling dams. However, unlike dams, Delta levees were not built using stringent engineering standards.
Explanation:
Levees are naturally occurring banks that line the sides of a river channel as it travels through the flood plain in its lower course. They are created when a river floods, depositing coarse silt and sediment. The river deposits its heaviest, coarsest sediment closest to its usual channel during a flood. This deposition accumulates over time to form embankments. The finer material that the river deposited forms the flood plain beyond the levees.
A river's velocity abruptly decreases when it reaches the sea. Due to the decrease in velocity, the river's mouth receives the majority of the load. A delta begins to form if the river produces sediment more quickly than the sea can erode it. Deposition may result in the main river channel becoming blocked, forcing the water to create distributaries to find a different path to the sea. Deltas typically have very good soil and make excellent farming areas. Deltas come in three different shapes: arcuate, cuspate, and bird's foot.
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