dD vs d 18 O plot of groundwaters, surface waters and

2: Formation of excess air and degassing according to the CE-model

Measured (circles) versus simulated (solid lines) resident

Aerial image of the field area located approximately 20 km SE of Phnom

Chris BALLENTINE, Professor of Geochemistry, PhD, University of Cambridge, University of Oxford, Oxford, OX, Department of Earth Sciences

3 H concentration in precipitation. Data for the period 1969-2009 taken

Major and minor cation analysis of groundwater samples collected from

Chris BALLENTINE, Professor of Geochemistry, PhD, University of Cambridge, University of Oxford, Oxford, OX, Department of Earth Sciences

Fig. S5. Mekong River and surface water body hydrographs for 2005–2006.

M. LAWSON, Senior Geologist

Fig. S5. Mekong River and surface water body hydrographs for 2005–2006.