The Lugeon test is widely used to estimate average hydraulic conductivity of rock
masses. Interpretation methods currently available in the literature were developed at a
time when measurements were made in an analogous fashion and data was subsequently
recorded by hand at rather large intervals of time. Current technology allows measuring
and digital recording of data in real time, thus granting us an opportunity to update the
interpretation procedures for Lugeon tests. This paper provides an interpretation method
that expands the current procedures to benefit from the recent advances in data
acquisition equipment.