# Hydraulic Conductivity

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Hydraulic conductivity, abbreviated as k, is the ease with which a fluid can move through porous spaces or fractures.

### Formulas that use Hydraulic Conductivity

 $$\large{ k = \frac{ Q }{ i \; A_c } }$$ $$\large{ k = \frac{v}{i} }$$ (Darcy velocity)

### Where:

$$\large{ k }$$ = hydraulic conductivity

$$\large{ A_c }$$ = area cross-section of flow

$$\large{ v }$$ = Darcy velocity or flux

$$\large{ Q }$$ = flow rate

$$\large{ i }$$ = hydraulic gradient