A reservoir surface covers an area of 850 km2 and has an average depth of 18.7 m. The inflow of the reservoir is from a river with an average flow rate of 2500m3/s and an average suspended-sediment concentration of 250 mg/l. Estimate the rate at which the depth of the reservoir is decreasing due to sediment accumulation and the time it will take for the reservoir storage to decrease by 10%. Assume that the accumulated sediment has a bulk density of 1600 kg/m3.

A reservoir surface covers an area of 850 km2 and has an average depth of 18.7 m. The inflow of the reservoir is from a river with an average flow rate of 2500m3/s and an average suspended-sediment concentration of 250 mg/l. Estimate the rate at which the depth of the reservoir is decreasing due to sediment accumulation and the time it will take for the reservoir storage to decrease by 10%. Assume that the accumulated sediment has a bulk density of 1600 kg/m3.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter7: Permeability

Section: Chapter Questions

Problem 7.4P

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7.75. A reservoir covers an area of 850 km² and has an aver- age depth of 18.7 m. The inflow to the reservoir is from a river with an average flow rate of 2500 m³/s and an average suspended-sediment concentration of 250 mg/L. Estimate the rate at which the depth of the reservoir is decreasing due to sediment accumulation, and the time it will take for the reservoir storage to decrease by 10%. Assume that the accumulated sediment has a bulk den- sity of 1600 kg/m³.
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