We drilled and installed a piezometer (mini diver (DI 505, Van Essen instruments) 1.6 m below the ground in a hillslope susceptible to debris flows in western Norway and measured pore pressure and water temperature through the years 2010–2013. Pressure is measured in cm H2O to an accuracy of ± 0.5 cm H2O with a resolution of 0.2 cm H2O. Temperature is measured in degrees Celsius to an accuracy of ± 0.1 °C, with a resolution of 0.01 °C. No data between 11 May and 17 June in 2010, no data between 26 May and 1 June in 2011.

V2 updates the dataset with the column “Depth [cm]”, the depth below the surface to the ground water table, in cm, corrected for atmopheric pressure, as published in diagrams in Bondevik & Sorteberg 2021