Lake George water levels for the period 2013–2017, measured by researchers at the Australian National University (ANU) using a combined pressure, conductivity and temperature sensor (CTD-Diver; van Essen Instruments B.V., the Netherlands) and corrected using a separate barometric pressure transducer (Baro Diver; van Essen Instruments B.V., the Netherlands). The sensors were installed approximately 400 m NW of Rocky Point (35.089°S, 149.462°E) on the eastern shore of Lake George. The surface water sensor could only detect water above a depth of 0.38 m.The values are daily averages of data measured at an hour frequency.