Vertical Unsaturated Recovery Calculator

Estimate the vertical unsaturated recovery volume for a retention cum detention pond.
Using: \(\displaystyle V_{rec} = \frac{K_s \times A_{pond} \times H_{eff} \times t}{L_{unsat}}\)

* Enter the pond parameters along with recovery time. \(K_s\) is in ft/day, area in ft², head in ft, time in days, and unsaturated thickness in ft.

Step 1: Enter Parameters

Saturated Hydraulic Conductivity, \(K_s\) (ft/day):

Example: 2.0 ft/day

Pond Surface Area, \(A_{pond}\) (ft²):

Example: 10,000 ft²

Effective Head, \(H_{eff}\) (ft):

Example: 3 ft

Recovery Time, \(t\) (days):

Example: 1 day

Unsaturated Zone Thickness, \(L_{unsat}\) (ft):

Example: 5 ft

Step 1: Enter Parameters

Calculated Recovery Volume