The 'coefficient of transmissivity' T of an aquifer is defined as:
Choose the correct answer
Permeability k alone
T = k × b — hydraulic conductivity × saturated thickness; governs well yield and aquifer drawdown
Only the aquifer thickness b
Porosity × thickness
Correct Answer
B. T = k × b — hydraulic conductivity × saturated thickness; governs well yield and aquifer drawdown
Why is this the answer?
Transmissivity T = k × b (m²/day or m²/s) where k = hydraulic conductivity, b = saturated thickness of aquifer. T represents the rate of groundwater flow through a full vertical section of aquifer 1 m wide under unit hydraulic gradient. High T → well yields high discharge. Used in: Thiem equation (confined steady-state), Theis equation (transient), Jacob straight-line method.
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