Darcy Seepage Flow Calculator
Groundwater flow rate through soil from k, gradient and area.
k spans TEN orders of magnitude between gravel and clay — no other engineering property ranges so wildly. Dewatering pumps, basement leaks and dam losses all start with this line.
Formula
Darcy Seepage Flow Calculator is a free darcy law for geotechnical engineers and foundation designers — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Darcy Seepage Flow Calculator
Groundwater flow rate through soil from k, gradient and area. The calculation implements Q = k·i·A (Darcy, 1856) (Darcy (1856); IS 2720-17). k spans TEN orders of magnitude between gravel and clay — no other engineering property ranges so wildly. Dewatering pumps, basement leaks and dam losses all start with this line.
How to use Darcy Seepage Flow Calculator
- 1Enter Permeability k in m/s (Gravel 10⁻² · sand 10⁻⁴ · silt 10⁻⁷ · clay 10⁻⁹).
- 2Enter Head difference in m.
- 3Enter Flow path length in m.
- 4Enter Flow area in m².
- 5Read Hydraulic gradient, Seepage flow, Per day instantly — no submit button needed.
Why use Darcy Seepage Flow Calculator?
- ✓Implements the standard formula — Q = k·i·A (Darcy, 1856)
- ✓Reference cited on-page: Darcy (1856); IS 2720-17
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Darcy Seepage Flow Calculator use?+
It computes Q = k·i·A (Darcy, 1856), per Darcy (1856); IS 2720-17. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
k spans TEN orders of magnitude between gravel and clay — no other engineering property ranges so wildly. Dewatering pumps, basement leaks and dam losses all start with this line.
Can this replace a soil investigation?+
No calculator replaces boreholes and lab tests — but with investigated parameters in hand, this gives you the standard-method result instantly, with the formula shown so reviewers can check it.
Is the Darcy Seepage Flow Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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