Walton Type Curve
Walton Leaky Aquifer Type Curve
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The Walton type curve method is useful for estimating leakage factor of the aquitard, as well as transmissivity, and storativity.
Estimating r\L for Leaky Aquifers
r = radial distance to observation well where drawdown is measured
L = leakage factor
Type curves are displayed for different values of r/L. Walton (1962) provided curves for r/L ranging from 0.0 to 6.0. As r/L increases, the leakage from the aquitard increases. A value of r/L equal to zero is the Theis solution.
After data has been matched to the best fit type curve, an estimate of r/L is required to determine the leakage factor.