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Coefficient of storage (A) has the dimensions of...

Coefficient of storage (A) has the dimensions of _____

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asked Sep 17, 2023 in Irrigation Engineering by Carter (75.2k points)

Coefficient of storage (A) has the dimensions of _____

(a) L^3

(b) L

(c) L^2

(d) Dimensionless

The question was posed to me in an international level competition.

Enquiry is from Aquifers and Their Type-2 topic in chapter Ground Water for Irrigation through Wells and Tubewells of Irrigation Engineering

irrigation engineering
ground water for irrigation through wells and tubewells
aquifers and their type-2

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answered Sep 25, 2023 by Greg (106k points)

Right choice is (d) Dimensionless

The best I can explain: Storage coefficient can be defined as the volume of water released from an aquifer of 1 m^2 area and full depth per meter fall of the piezometric head. Its unit will be m^3/m^2/m i.e. dimensionless.

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