the quantity of water flowing through the soil specimen
length of specimen
cross-sectional area of the specimen
the difference of hydraulic head over distance L
Hydraulic conductivity is a property of vascular plants, soil or rock, which describes the ease with which water can move through pore spaces or fractures. This procedure allows water to move through the soil under a steady state head condition while the quantity (volume) of water flowing through the soil specimen is measured over a period of time.