Journal article

Groundwater surface mapping informs sources of catchment baseflow

JF Costelloe, T PETERSON, K Halbert, AW Western, JJ McDonnell

Hydrology and Earth System Sciences | European Geosciences Union | Published : 2015


Groundwater discharge is a major contributor to stream baseflow. Quantifying this flux is difficult, despite its considerable importance to water resource management and evaluation of the effects of groundwater extraction on streamflow. It is important to be able to differentiate between contributions to streamflow from regional groundwater discharge (more susceptible to groundwater extraction) compared to interflow processes (arguably less susceptible to groundwater extraction). Here we explore the use of groundwater surface mapping as an independent data set to constrain estimates of groundwater discharge to streamflow using traditional digital filter and tracer techniques. We developed gr..

View full abstract


Awarded by Australian Research Council

Funding Acknowledgements

This work is funded by the Australian Research Council Discovery Project scheme through project DP120100253. We greatly appreciate the provision of groundwater chemistry data and introduction to the Gellibrand catchment by Alex Atkinson and Ian Cartwright from Monash University. We thank two anonymous reviewers and Ian Cartwright for their insightful and constructive reviews that helped improve this paper.