In a certain alluvial basin of 120 km2, 100 Mm3 of ground water was pumped in a year and the ground water table dropped by 5 m during the year. Assuming no replenishment, estimate the specific yield of the aquifer. If the specific retention is 12%, what is the porosity of the soil? (16.7%, 28.7%)

In a certain alluvial basin of 120 km2, 100 Mm3 of ground water was pumped in a year and the ground water table dropped by 5 m during the year. Assuming no replenishment, estimate the specific yield of the aquifer. If the specific retention is 12%, what is the porosity of the soil? (16.7%, 28.7%)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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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.

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In a certain alluvial basin of 120 km2, 100 Mm3 of ground water was pumped in a year
and the ground water table dropped by 5 m during the year. Assuming no replenishment,
estimate the specific yield of the aquifer. If the specific retention is 12%, what is the porosity
of the soil? (16.7%, 28.7%)

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