Answer - A. Specific Capacity
The performance of a well is measured by its specific capacity.
Specific capacity: It is calculated by dividing the yield discharge of a well to the drawdown. It refers to the efficiency of the well. It is an indicative parameter of the performance of a well.
Specific yield: It is the rate of water which percolates in the well under a unit head.
Storage coefficient: Storage coefficient or Storativity is the volume of water which is removed from the unit area of an aquifer per unit drop in the hydraulic head.
Permeability coefficient: Permeability coefficient given by Darcy is mostly used for the characterization of rocks and soils. It is a measure of the resistance of a pervious structure to the flow of fluid through the pervious material.
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