Water Transfer Redistributes Sediment in Small Mountain Reservoirs

Tingyu Li () and Gregory B. Pasternack
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Tingyu Li: University of California
Gregory B. Pasternack: University of California

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2022, vol. 36, issue 13, No 10, 5033-5048

Abstract: Abstract Reservoir sedimentation management has become an important topic for large dams in the United States due to their historical design, current age, and increased environmental regulation. Less attention has been paid to small dams (hydraulic size 100% when water transfer was maximized, involving a flow 12 times higher than mean annual discharge. With reservoir stage drawdown, the increment of sediment erosion was further increased by > 50% compared with water-transfer-only scenarios. The natural upstream inflow with daily flow occurrence of 5–25% was the optimal water transfer to avoid disturbing sediment. These results indicated that water transfer and stage drawdown optimization is a promising strategy to promote or abate redistribution of deposited sediment through a smaller reservoir.

Keywords: Reservoir sedimentation; Small dams; Water transfers; Backwater effects; Sediment management (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s11269-022-03290-2

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