An earthen dam is constructed on an impermeable bedrock layer. It is 123m across (i.e., the distance from the water in the reservoir to the tailwaters below the dam is 123m). The average hydraulic conductivity of the material used in the dam construction is 1.33 m/d. The water in the reservoir behind

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Hydraulic Conductivity

Section: Chapter Questions

Problem 6.14P

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Concept explainers

Groundwater Flow

The term groundwater refers to the water which is found beneath the earth's surface. Pores present in the soil and rocks with fractures make a passage for rainwater to enter the earth's surface and deposit as groundwater. The flow nature and direction of groundwater under the earth's surface directly impacts the strength and compressibility of the soil, which reflects its ability to support structural loads.

Question

An earthen dam is constructed on an impermeable bedrock layer. It is 123m across (i.e., the distance from the water in the reservoir to the tailwaters below the dam is 123m). The average hydraulic conductivity of the material used in the dam construction is 1.33 m/d. The water in the reservoir behind the dam is 18.5 m deep and the tailwaters below the dam are 4.6 m deep. Compute the volume of water that seeps from the reservoir, through the dam, and into the tailwaters per 100-m-wide strip of the dam in cubic meters per day.

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