Problem One (33%) – water usage calculation in a confined aquifer A confined aquifer with a storativity...

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Civil Engineering

Problem One (33%) – water usage calculation in a confinedaquifer

A confined aquifer with a storativity of 7.8 x 10-5extends over an area of 50 km2. During the wet seasonthe aquifer has been recharged and the storage in that area hasbeen increased by 8 ML.

  1.      How much has the potentiometricsurface raised?
  1.      If the aquifer was unconfined with aspecific yield of 18%, what would be the volume recharged (in ML)for the same amount of raise in the water table if we consider thatthe specific retention is effectively 0%?

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a For confined Aquifer Storativity is the volume of wate released from storage per unit surface area per unit decline in the hydraulic head volume of water increased in the    See Answer
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