River Delta
Gravel and mud pushed and flowing downward from upstream pile up near the inlet, making the inlet a shallow area. If the mud is allowed to accumulate over many years, that shallow area may become an island.
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River Delta
Gravel and mud pushed and flowing downward from upstream pile up near the inlet, making the inlet a shallow area. If the mud is allowed to accumulate over many years, that shallow area may become an island.
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