How to use the darcy's law groundwater flow calculator
Find groundwater discharge through an aquifer. Enter hydraulic conductivity, cross-section area, hydraulic gradient in the fields above; the discharge, discharge are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- K — Hydraulic conductivity (m/day)
- A — Cross-section area (m²)
- i — Hydraulic gradient
Worked example
With hydraulic conductivity = 10 m/day, cross-section area = 50 m², hydraulic gradient = 0.01, the calculator gives discharge ≈ 5 m³/day; discharge ≈ 3.472222 L/min.
Frequently asked questions
What is the formula for the darcy's law groundwater flow calculation?
Discharge (m³/day) = K × A × i. Discharge (L/min) = [Discharge] × 1000 / 1440. Here K is hydraulic conductivity (m/day), A is cross-section area (m²), i is hydraulic gradient.
What inputs do I need for the darcy's law groundwater flow calculator?
You need hydraulic conductivity in m/day, cross-section area in m², hydraulic gradient. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.