Groundwater seepage velocity calculator

Calculate mean pore-water speed and ideal advective travel time with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use mean pore-water speed and ideal advective travel time to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Darcy flux magnitude (m/day)
0.05
Effective porosity (fraction)
0.25
Travel distance (m)
100
Mean pore-water speed (m/day)
0.2
Ideal advective travel time (days)
500

Try another scenario

Darcy flux magnitude (m/day)
1.05
Effective porosity (fraction)
0.25
Travel distance (m)
100
Mean pore-water speed (m/day)
4.2
Ideal advective travel time (days)
23.809524
Calculation method

Calculation method

Mean pore-water speed (m/day)

Mean advective pore velocity=q/effective porosity; travel time=distance/velocity. No dispersion or retardation.

Ideal advective travel time (days)

Mean advective pore velocity=q/effective porosity; travel time=distance/velocity. No dispersion or retardation.

Symbols and units
a
Darcy flux magnitude (m/day)
b
Effective porosity (fraction)
c
Travel distance (m)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • User-supplied measurements and assumptions; Mean advective pore velocity=q/effective porosity; travel time=distance/velocity. No dispersion or retardation. Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
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Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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