Dr G B Allison, the current Chief of the CSIRO Division of Water Resources, has made a significant contribution to hydrologic research and its application.

Together with the International Atomic Energy Agency and with several other international organisations he has been a key figure in developing the use of stable isotope techniques for the solving of practical problems in hydrology. The team he heads is a leader in this field of research.

Dr Allison's achievements in applied hydrology include the development of methods for determining the source of both surface and subsurface waters and for evaluating groundwater recharge and discharge rates. The techniques he has developed are becoming widely used both nationally and internationally.

Recently he has played a key role in establishing a joint CSIRO/University Centre and is the Director of this Centre.