1. Enter values
Use consistent units and the requested inputs.
Cooper-Jacob Transient Aquifer Drawdown Analysis — Retaining Structure: Cooper-Jacob logarithmic time factor Calculator
Calculate Cooper-Jacob logarithmic time factor for Retaining Structure using the country-neutral Cooper-Jacob Transient Aquifer Drawdown Analysis formula.
Runs in your browserInputs are processed directly in your browser.
Instant resultResults and useful breakdowns appear immediately.
Clear contextNotes explain how to interpret the estimate.
m³/s
m²/s
m
h
Estimated result
—
Guide
How to use this calculator
2. Review the result
Use the main result and breakdowns as a planning estimate.
3. Check context
For regulated topics, verify current local rules before acting.
Input
Inputs used by this calculator
Review the values and units used by this calculator before calculating.
Pompa flow ratem³/sAkifer transmisivitesim²/sStorage coefficientobservation distancemPompalama durationh