Calculators

Nonleaky Confined Aquifer

Compute well function or drawdown under transient conditions using the Theis Equation.

Compute transmissivity of a nonleaky confined aquifer under steady-state conditions using the Thiem Equation.

Unconfined Aquifer

Compute drawdown around a pumping well in an unconfined aquifer using the Theis Equation and Jacob's correction for partial dewatering.

Compute transmissivity of an unconfined aquifer under steady-state conditions using the Thiem Equation with Jacob's correction for partial dewatering.

Radius of Influence

Compute the radius of influence for a pumping well in a nonleaky confined aquifer.

Specific Capacity to Transmissivity Conversion

Estimate the transmissivity of an aquifer from the specific capacity of a well using an exact or approximate formula.

Groundwater Mounding

Compute the maximum height of the water table beneath a circular or rectangular recharge area.