Which risk increased for ancient Mesopotamian cities utilizing the 'Shatt-el-Hai' canal?

💡 Explanation

Channel avulsion risk increased considerably via positive feedback because the 'Shatt-el-Hai'' canal’s levees confined the river, resulting in increased sediment deposition within the channel due to decreased flow efficiency; therefore, the canal was more prone to sudden abandonment via avulsion rather than controlled diversions.

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