Associate Professor Earl Bardsley

Associate Professor (Hydrology)

Qualifications: BSc(Hons) Otago MSc Otago PhD Otago

Research Interests

  • Developing hydrological models with optimal simplicity
  • Agent-based groundwater models
  • Hydro power hydrology and data-based hydroclimatic forecasting
  • Finite mixture models of solute transport in the environment


  • Meridian Energy Senior Research Fellow, 2000-2005
  • Distinguished Visiting Professor, Chinese Academy of Sciences, Beijing, 2011
  • New Zealand Hydrological Society Award For Outstanding Achievement, 2011

Research Supervised


  • Jenkins, Bevan (in progress). Developing a methodology for low flow quantification for ungauged catchments of the Coromandel and South Waikato.
  • Majeed, Mohammed (in progress). Evaluating the potential of a future large pumped storage scheme, for enhancing New Zealand hydro storage capacity against climatic variations.
  • Taylor, Malcolm (in progress). An investigation into a potential early warning system for low flows in the Clutha River.
  • Shokri, Ali (2016). Developing groundwater and surface water interaction methods for complex hydrological systems.
  • Vetrova, Varvara (2016). Selected data exploration methods in hydroclimatology.
  • Purdie, Jennifer (2007). Seasonal inflow forecasting of New Zealand's South Island hydro lakes.
  • Brown, Edmund (2002). Evaluating the potential of constructed groundwater systems to improve the water supply operations of Auckland City, New Zealand.


  • Hampton, George (2016). Evaluation of a proposed aquifer recharge system, Poverty Bay Flats.
  • Qiao, Ying (2012). Detecting signals of climatic shifts and land use change from precipitation and river discharge variations: the Whanganui and Waikato catchments.
  • Hopkirk, Carrie (2011). Forecasting Lake Waikaremoana water availability for hydro power.
  • Vavae, Hillia (2008). A simple forecasting scheme for predicting low rainfalls in Funafuti, Tuvalu.
  • Jelley, Neil (2007). Forecasting seasonal drawdowns in Whangamata town supply wells.
  • Bear, Sarah (2005). Hydrological evaluation of pumped storage in the Onslow-Manorburn basin.
  • Kerr, Justin (2004). Assessing the hydrological implications of the Wilsonville quarry expansion at Hikurangi, Northland.
  • Bigham, Aiden (2003). A feasibility study on deep well injection as a means of disposing Kawerau effluent.
  • Campbell, Amy (2002). Efficiency evaluation for the Waitaki hydropower scheme.


  • Nalder, Guinevere (2006). Submerged thin plate weirs with unequal upstream and downstream beds.

BSc (Hons)

  • Johnstone, Sarah (2009). Forecasting seasonal inflows into Lake Taupo, North Island, New Zealand.

Teaching Commitments

Recent Publications

  • Bardsley, W. E. (2017). Note on a modified return period scale for upper-truncated unbounded flood distributions. Journal of Hydrology, 544, 452-455. doi:10.1016/j.jhydrol.2016.11.050

  • Bardsley, W. E. (2017). A finite mixture approach to univariate data simulation with moment matching. Environmental Modelling & Software, 90, 27-33. doi:10.1016/j.envsoft.2016.11.019

  • Bardsley, W. E. (2016). Cautionary note on multi-component flood distributions for annual maxima. Hydrological Processes. doi:10.1002/hyp.10886 Open Access version: hdl:10289/10263

  • Bardsley, W. E. (2016). Note on the hypergeometric distribution as an invalidation test for binary forecasts. Stochastic Environmental Research and Risk Assessment, 30(3), 1059-1061. doi:10.1007/s00477-015-1071-z

View All research publications by Earl Bardsley

Contact Details

Room: EF.1.02
Phone: +64 7 858 5011