• Environmental Flows (Impacts on geomorphology)
  • Fluvial Geomorphology (Sedimentology, Hydrodynamics)



  • Dr Geoff Vietz is a geomorphologist and water management specialist with 18 years experience in catchment, river and wetland management.

    Geoff is a Research Fellow at the University of Melbourne where his research is focused on the geomorphology, ecohydraulics and sustainable management of streams and wetlands. He has authored or co-authored over 100 journal papers or technical reports and lectured on fluvial geomorphology, hydrology, river rehabilitation and environmental flows. He is a former co-leader of the stream ecology program for the Cooperative Research Centre for Water Sensitive Cities and a member of the Waterway Ecosystem Research Group.

    Geoff is also the principal of Streamology (Streamology.com.au), a consulting company focused on narrowing the research-consulting divide and ensuring novel and appropriate solutions are applied to waterway, wetland and water resources management. Geoff has been in technical and managerial roles on projects throughout Australia and internationally. His specialties include geomorphic investigations and environmental flow studies as they apply to both rural and urban environments, in addition to extensive experience in river rehabilitation, monitoring and evaluation, and strategic water resources management. Geoff is immediate past-president of the River Basin Management Society and a Fellow of the Peter Cullen Water and Environment Trust.

    Selected Publications
    Vietz, G. J., Sammonds, M. J., Walsh, C. J., Fletcher, T. D., Rutherfurd, I. D., Stewardson, M. J., 2014, Ecologically relevant geomorphic attributes of streams are impaired by even low levels of watershed effective imperviousness, Geomorphology 206:67-78.

    Fletcher, T.D., Vietz, G.J., Walsh, C.J., 2014. Protection of stream ecosystems from urban stormwater runoff: the multiple benefits of an ecohydrological approch, Progress in Physical Geography. Published online May 27, doi: 10.117   


Member of

  • Peter Cullen Water and Environment Trust Pty Ltd. Peter Cullen Water and Environment Trust Pty Ltd University of Canberra, CANBERRA ACT 2601 2011 - 2015
  • Australian and New Zealand Geomorphology Group. Australian and New Zealand Geomorphology Group 2003 - 2015
  • River Basin Management Society. Member 2003 - 2015


Selected publications


Investigator on


Education and training

  • BEng,
  • Phd Fluvial Geomorphology, University of Melbourne 2008
  • PHD, 2008
  • BEnvEng/BSc, University of Melbourne 1997

Awards and honors

  • Best Peer-Reviewed Paper - 8th International Water Sensitive Urban Design Conference 2013, 2013
  • Not in List, 2011



Available for supervision

  • Y

Supervision Statement

  • My main research focus is on urbanisation and the geomorphic changes in urban streams. Activities within this field include: the geomorphic attributes of urban streams that relate to ecological health, the relationships between catchment imperviousness and geomorphic change, and the role of excess stormwater runoff that contributes to geomorphic degradation. Opportunities to investigate these linkages include the use of field survey to assess geomorphic condition relative to catchment urbanisation and timeframes of adjustment, and the use of LiDAR to remotely assess geomorphic attributes that may be sensitive to urbanisation.

    My research also extends to the impacts of river regulation on channel geomorphology (environmental flows). Activities include: the role of flow regulation in driving geomorphic change including the loss of bars and benches, and the effectiveness of environmental flows in maintaining substrates and physical conditions suitable for biota.

    Current supervision includes:

    Russell, K. (PhD, Melbourne University): Geomorphic opportunities and constraints to urban stream functional restoration, Starting March 2015

    Ahmed, I. (PhD, Charles Sturt University): Hydraulic habitat and environmental flows in an anabranching system, Started July 2014

    Houshmand, A. (Masters by research, secondary supervisor): ‘Improving urban stream condition by redirecting sediments’, Started 2013

    Virahsawmy, H. (PhD, secondary supervisor): ‘Influence of vegetation and media type on the hydrologic processes within bioretention systems’, Started 2011

    Zorriasateyn, N. (PhD, secondary supervisor): ‘‘Impacts of urbanisation on bedload sediment transport’, Started 2010