Subtopic: Steady and unsteady flow in confined and unconfined aquifers
Question Statement:
In an unconfined aquifer of initial saturated depth $H = 20.0\text{ m}$, a fully penetrating well is pumped at steady state. At an observation well, the water table drops to $h = 16.0\text{ m}$. The equivalent drawdown in a fictitious confined aquifer of thickness $H$ according to Dupuit's transformation ($s_{eq} = s - \frac{s^2}{2 H}$) in meters is ________ (round off to 2 decimal places).