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← HistoryWhich problem commonly occurred when Euphrates river levels fluctuated in Sumer irrigation canalscirca 3000 BC?
A)Increased soil salinization from rising water
B)Aqueduct collapse from hydraulic overpressure
C)Canal siltation from decreased water velocity✓
D)Reservoir evaporation from higher temperatures
💡 Explanation
When river levels fluctuated, lower water velocity reduced sediment transport capacity because settling velocity exceeds flow velocity, increasing siltation. Therefore canal siltation results, rather than salinization, collapse, or evaporation, which depend on alternative mechanisms involving water properties and structural integrity.
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