# Leakage coefficient

From AMS Glossary

## leakage coefficient

In a leaky aquifer, leakage coefficient for a given observation well refers to the dimensionless parameter where

*r*is the distance of the observation well from the pumping well;*K*and*K*′ are the hydraulic conductivity of the aquifer and the leaky layer, respectively; and*H*and*H*′ are the thickness of the aquifer and the leaky layer, respectively.