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4.7 - Oxbow Lakes, Levees, Braided Channels and Deltas

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  • ✓Explain how meanders may change position, forming an oxbow lake.
  • ✓Describe how a river’s banks may be raised above the floodplain as levees.
  • ✓Explain how deposition may create a braided channel with many islands/bars.
  • ✓Explain how deposition at the river’s mouth creates a delta.
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After a hurricane, you might see muddy water spreading across flat land and the river channel looking ‘different’ a week later. Sometimes a whole river bend gets cut off, leaving a ‘banana-shaped’ lake behind. Down near the coast, rivers can build new land by dropping their sediment.
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Before today, had you studied oxbow lakes, levees, braided channels and deltas in school?

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Predict: which statement do you think best describes oxbow lake?

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After a hurricane, you might see muddy water spreading across flat land and the river channel looking ‘different’ a week later. Sometimes a whole river bend gets cut off, leaving a ‘banana-shaped’ lake behind. Down near the coast, rivers can build new land by dropping their sediment.
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