Guna Hewa

Research Interests

Agri-food, water and environment systems Hydrological hazards (e.g. avalanches and floods) Surface water hydrology Urban hydrology Water recycling services (incl. sewage and greywater) Water Resources Engineering

APrf Guna Hewa

Associate Professor of Water Engineering

School of Civil Engineering and Construction

College of Engineering and Information Technology

Eligible to supervise Masters and PhD - email supervisor to discuss availability.

Available For Media Comment.

Welcome to Guna Hewa's homepage! Guna is a Civil Engineer and a Hydrologist. Dr Guna Hewa was raised and educated in Sri Lanka, completing her Civil Engineering degree there in 1994. Guna's introduction to the field of hydrology commenced when she completed her Masters in Hydrology in 1996, for which she won a prestigious Irish government Fellowship. The next step in Guna's career was moving to Melbourne to undertake a PhD at the University of Melbourne, which Guna completed in 2001.
Guna joined UniSA in 2003, and since then, she has been educating both undergraduate and postgraduate students in Hydrology & Water Resources Engineering. She has also been the Program Director for Masters of Water Resources Management, delivered through the International Centre of Excellence in Water Resources Management (ICEWaRM) at the University of South Australia until 2014. During her academic career, she has supervised nine PhD degrees for completion. Guna has also been the Research Degree Coordinator (RDC) for UniSA STEM since 2016.

Ungauged catchment predictions, Flood and Low Flow Hydrology, Water Sensitive Urban Design (WSUD), Hydrological Losses and Catchment Modelling, Reclaimed Water for Irrigation, Soil Hydrology, Efficent Irrigation, Land-use Change and Climate Change Impacts on Catchment Hydrology.

Date Position Institution name
2023 - ongoing Associate Professor (Water Engineering) University of South Australia
2016 - ongoing Research Education Portfolio Leader (REPL) and Research Degree Coordinator (RDC) University of South Australia
2014 - 2022 Senior Lecturer University of South Australia
2003 - 2013 Lecturer University of South Australia
2002 - 2002 Lecturer and Research Associate Victoria University of Technology
1994 - 1996 Graduate Civil Engineer Engineering Consultants Ltd,

Language Competency
English Can read, write, speak, understand spoken and peer review
Sinhala; Sinhalese Can read, write, speak, understand spoken and peer review

Date Institution name Country Title
2006 - 2006 Queensland University of Technology Australia Graduate Certificate
1997 - 2001 University of Melbourne Australia PhD
1995 - 1996 National University of Ireland, Galway Ireland MSc (First Class)
1990 - 1994 University of Moratuwa Sri Lanka BSc (First Class Honours)

Date Title Institution name Country
2022 Fellow Engineers Australia Australia

Year Citation
2026 Ekanayake, S., Boland, J., Myers, B., & Hewa, G. A. (2026). Trends in Rainfall and Temperature in the Murray Mallee and Upper Eyre Peninsula Region of South Australia—Connections to Climate and Land Use Change. Environmetrics, 37(1), 20 pages.
DOI
2026 Karunatilaka, P. D., Myers, B. R., Doody, T. M., Benyon, R. G., Hewa, G. A., Umali, B. P., & O'Hehir, J. F. (2026). Assessing the Impact of Subsurface Clay Layers on Water Use Dynamics in Eucalyptus globulus Plantations. Hydrological Processes, 40(2), 16 pages.
DOI
2024 Arifuzzaman., Rahman, M. M., Karim, M. R., Hewa, G. A., Rawlings, R., & Iqbal, A. (2024). Phytocapping for municipal solid waste landfills: a sustainable approach. Sustainability, 16(18, article no. 8230), 1-25.
DOI Scopus4 WoS6
2024 Andualem, T. G., Hewa, G. A., Myers, B. R., Boland, J., & Peters, S. (2024). Predicting Suspended Sediment Transport in Urbanised Streams: A Case Study of Dry Creek, South Australia. Hydrology, 11(11), 16 pages.
DOI Scopus5 WoS4
2024 Andualem, T. G., Peters, S., Hewa, G. A., Myers, B. R., Boland, J., & Pezzaniti, D. (2024). Channel morphological change monitoring using high-resolution LiDAR-derived DEM and multi-temporal imageries. Science of the Total Environment, 921(171104), 15 pages.
DOI Scopus18 WoS16 Europe PMC1
2024 Andualem, T. G., Hewa, G. A., Boland, J., Peters, S., & Myers, B. R. (2024). Multi-Method Comparative Analysis of Hydroclimatic Trends and Variability in Dry Creek Catchment, South Australia. Earth Systems and Environment, 8(4), 1751-1776.
DOI Scopus11 WoS11
2023 Andualem, T. G., Peters, S., Hewa, G. A., Boland, J., & Myers, B. R. (2023). Spatiotemporal trends of urban-induced land use and land cover change and implications on catchment surface imperviousness. Applied Water Science, 13(12), 16 pages.
DOI Scopus23 WoS17
2023 Andualem, T. G., Hewa, G. A., Myers, B. R., Peters, S., & Boland, J. (2023). Erosion and Sediment Transport Modeling: A Systematic Review. Land, 12(7), 20 pages.
DOI Scopus77 WoS67
2023 Chand, J. B., Hewa, G., Hassanli, A., & Myers, B. (2023). Basic economics on deficit irrigation and water quality dynamics for horticulture production in a greenhouse environment. Australian Journal of Crop Science, 17(1), 52-60.
DOI
2023 Kemp, D., & Alankarage, G. H. (2023). Benchmarking three event-based rainfall-runoff routing models on Australian catchments. Hydrology, 10(6, article no. 131), 1-19.
DOI Scopus10 WoS7
2022 Awad, J., Hewa, G., Myers, B. R., Walker, C., Lucke, T., Akyol, B., & Duan, X. (2022). Investigation of the potential of native wetland plants for removal of nutrients from synthetic stormwater and domestic wastewater. Ecological Engineering, 179(106642), 1-8.
DOI Scopus11 WoS10
2022 Shahzad, H., Myers, B., Boland, J., Hewa, G., & Johnson, T. (2022). Stormwater runoff reduction benefits of distributed curbside infiltration devices in an urban catchment. Water Research, 215, 13 pages.
DOI Scopus22 WoS17 Europe PMC4
2022 Shahzad, H., Myers, B., Hewa, G., Johnson, T., Boland, J., & Sadhpare, H. R. (2022). Analyzing the impact of hydrological storage and connected impervious area on the performance of distributed kerbside infiltration systems in an urban catchment. Journal of Hydrology, 608, 16 pages.
DOI Scopus6 WoS6
2022 Shahzad, H., Myers, B., Hewa, G., Johnson, T., Boland, J., & Mujtaba, H. (2022). Characterizing the stormwater runoff quality and evaluating the performance of curbside infiltration systems to improve stormwater quality of an urban catchment. Water Switzerland, 14(1), 22 pages.
DOI Scopus7 WoS6
2022 Hossain, S., Hewa, G. A., Chow, C. W. K., & Cook, D. (2022). Smooth optimisation of demand patterns in water distribution system hydraulic model. Water E-Journal, 7(2), 1-10.
DOI
2022 Hossain, S., Chow, C. W. K., Cook, D., Sawade, E., & Hewa, G. A. (2022). Review of chloramine decay models in drinking water system. Environmental Science: Water Research & Technology, 8(5), 926-948.
DOI Scopus35 WoS31
2022 Hossain, S., Chow, C. W. K., Cook, D., Sawade, E., & Hewa, G. A. (2022). Review of nitrification monitoring and control strategies in drinking water system. International Journal of Environmental Research and Public Health, 19(7, article no. 4003), 1-31.
DOI Scopus41 WoS34 Europe PMC16
2022 Hagos, Y. G., Mengie, M. A., Andualem, T. G., Yibeltal, M., Linh, N. T. T., Tenagashaw, D. Y., & Hewa, G. (2022). Land suitability assessment for surface irrigation development at Ethiopian highlands using geospatial technology. Applied Water Science, 12(5, article no, 98), 1-11.
DOI Scopus45 WoS37
2022 Hossain, S., Hewa, G. A., Chow, C. W. K., & Cook, D. (2022). Development and comparison of water quality network model and data analytics model for monochloramine decay prediction. Water, 14(13, article number 2021), 1-20.
DOI Scopus4 WoS3
2022 Semananda, N. P. K., & Hewa, G. A. (2022). Estimation of low flow statistics for sustainable water resources management in South Australia. Hydrology, 9(9, article no. 152), 1-12.
DOI Scopus5 WoS6
2022 Ratnayake, D. C., Hewa, G. A., Kemp, D. J., & Ahmed, A. A. (2022). Application of multi-criteria decision-making methods to identification of soil moisture monitoring sites in an urban catchment in South Australia. Water Science and Engineering, 15(4), 294-304.
DOI Scopus2
2022 Ahmed, A., Alrajhi, A., Alquwaizany, A., Al Maliki, A., & Hewa, G. (2022). Flood Susceptibility Mapping Using Watershed Geomorphic Data in the Onkaparinga Basin, South Australia. Sustainability, 14(23, article no. 16270), 1-23.
DOI Scopus13 WoS12
2022 Ratnayake, D. C., Hewa, G. A., & Kemp, D. J. (2022). Challenges in quantifying losses in a partly urbanised catchment: a South Australian case study. Water, 14(8), 1-21.
DOI Scopus2 WoS2
2021 Shahzad, H., Myers, B., Hewa, G., Boland, J., & Johnson, T. (2021). Evaluating the Performance of a Hydrological Model to Represent Curbside Distributed Infiltration Wells in a Residential Catchment. Journal of Hydrologic Engineering, 26(8), 15 pages.
DOI Scopus6 WoS4
2021 Chand, J. B., Hewa, G., Hassanli, A., & Myers, B. (2021). Deficit irrigation on tomato production in a greenhouse environment: a review. Journal of Irrigation and Drainage Engineering, 147(2, article no. 0001529), 1-10.
DOI Scopus41 WoS36
2021 Ahmed, A., Hewa, G., & Alrajhi, A. (2021). Flood susceptibility mapping using a geomorphometric approach in South Australian basins. Natural Hazards, 106(1), 629-653.
DOI Scopus27 WoS22
2021 Ahmed, A., Ranasinghe Arachchilage, C., Alrajhi, A., & Hewa, G. (2021). Comparison of multicriteria decision-making techniques for groundwater recharge potential zonation: case study of the willochra basin, South Australia. Water, 13(4, article no. 525), 1-26.
DOI Scopus38 WoS35
2021 Chand, J. B., Hewa, G., Hassanli, A., & Myers, B. (2021). Plant biomass and fruit quality response of greenhouse tomato under varying irrigation level and water quality. Australian Journal of Crop Science, 15(5), 716-724.
DOI Scopus3
2021 Andualem, T. G., Kassa, M., Getachew Demeke, G., Hewa, G., Dar, I. A., Pham, Q. B., & Yamada, T. J. (2021). Grand Ethiopian renaissance dam and hydrologic hegemony over Abbay Basin. Sustainable Water Resources Management, 7(6, article no. 102), 1-11.
DOI Scopus6 WoS4
2021 Hossain, S., Hewa, G. A., Chow, C. W. K., & Cook, D. (2021). Modelling and incorporating the variable demand patterns to the calibration of water distribution system hydraulic model. Water, 13(20, article no. 2890), 1-17.
DOI Scopus20 WoS17
2021 Hossain, S., Cook, D., Chow, C. W. K., & Hewa, G. A. (2021). Development of an optical method to monitor nitrification in drinking water. Sensors, 21(22, article no. 7525), 1-18.
DOI Scopus16 WoS16 Europe PMC7
2020 Akhter, F., Hewa, G. A., Ahammed, F., Myers, B., & Argue, J. R. (2020). Performance evaluation of stormwater management systems and its impact on development costing. Water, 12(2, article no. 375), 1-20.
DOI Scopus9 WoS8
2020 Hewa, G., Hassanli, A., Myers, B., & Chand, J. (2020). Evaluation of deficit irrigation and water quality on production and water productivity of tomato in greenhouse. Agriculture (Switzerland), 10(7, article no. 1-18), 1-18.
DOI Scopus36 WoS30
2020 Hossain, S., Chow, C. W. K., Hewa, G. A., Cook, D., & Harris, M. (2020). Spectrophotometric online detection of drinking water disinfectant: a machine learning approach. Sensors, 20(22, article no. 6671), 1-29.
DOI Scopus34 WoS31 Europe PMC15
2019 Hossain, S., Hewa, G. A., & Wella Hewage, S. (2019). A comparison of continuous and event-based rainfall-runoff (RR) modelling using EPA-SWMM. Water, 11(3, article no. 611), 1-34.
DOI Scopus68 WoS68
2018 Liffner, J. W., Hewa, G. A., & Peel, M. C. (2018). The sensitivity of catchment hypsometry and hypsometric properties to DEM resolution and polynomial order. Geomorphology, 309, 112-120.
DOI Scopus17 WoS17
2016 Oliver, M. M. H., Hewa, G. A., & Pezzaniti, D. (2016). Thermal variation and pressure compensated emitters. Agricultural Water Management, 176, 29-39.
DOI Scopus10 WoS7
2016 Akhter, M. S., & Hewa, G. A. (2016). The use of PCSWMM for assessing the impacts of land use changes on hydrological responses and performance of WSUD in managing the impacts at Myponga Catchment, South Australia. Water, 8(11), 1-17.
DOI Scopus72 WoS66
2016 Wella Hewage, C. S., Hewa, G. A., & Pezzaniti, D. (2016). Can water sensitive urban design systems help to preserve natural channel-forming flow regimes in an urbanised catchment?. Water Science and Technology, 73(1), 78-87.
DOI Scopus23 WoS22 Europe PMC3
2015 Gamage, S. H. P. W., Hewa, G. A., & Beecham, S. (2015). Modelling hydrological losses for varying rainfall and moisture conditions in South Australian catchments. Journal of hydrology, 4(B), 1-21.
DOI Scopus19 WoS17
2014 Ahammed, F., Hewa, G. A., & Argue, J. R. (2014). Variability of annual daily maximum rainfall of Dhaka, Bangladesh. Atmospheric research, 137, 176-182.
DOI Scopus43 WoS31
2014 Oliver, M. M. H., Pezzaniti, D., & Hewa, A. G. (2014). Emitter clogging in a reclaimed water irrigation scheme with controlled suspended. International Journal of Sustainable Development and Planning, 9(6), 847-860.
DOI Scopus5
2014 Oliver, M. M. H., Hewa, A. G., & Pezzaniti, D. (2014). Bio-fouling of subsurface type drip emitters applying reclaimed water under medium soil thermal variation. Agricultural water management, 133, 12-23.
DOI Scopus41 WoS28
2013 Gamage, S. H. P. W., Hewa, G. A., & Beecham, S. (2013). Probability distributions for explaining hydrological losses in South Australian catchments. Hydrology and Earth System Sciences, 17(11), 4541-4553.
DOI Scopus11 WoS11
2012 Argue, J. R., Pezzaniti, D., & Hewa, G. A. (2012). Design criteria for channel-forming flows in waterways of urbanising catchments. Australian journal of water resources, 15(2), 121-130.
DOI Scopus1 WoS1
2012 Ahammed, F., Hewa, G. A., & Argue, J. R. (2012). Introducing leaky-well concept for stormwater quantity control in Dhaka, Bangladesh. Applied water science, 3(1), 115-123.
DOI Scopus8 WoS5
2012 Ahammed, F., Hewa, G. A., & Argue, J. R. (2012). Applying multi-criteria decision analysis to select WSUD and LID technologies. Water science and technology: water supply, 12(6), 844-853.
DOI Scopus22 WoS20
2012 Ahammed, F., & Hewa, G. A. (2012). Development of hydrological tools using extreme rainfall events for Dhaka, Bangladesh. Water International, 37(1), 43-52.
DOI Scopus10 WoS10
2012 Liyanagamage, S. P., & Hewa, G. A. (2012). Link between flow regime and the catchment hypsometry: analysis of South Australian Basins. Journal of hydrologic engineering, 17(2), 1287-1295.
DOI Scopus8 WoS8
2010 Walpita Gamage, S. H. P., Hewa, A. G., Daniell, T., Wella Hewage, C. S., & Kemp, D. (2010). Modeling 100 year ARI floods in South Australian Catchments. Journal of Hydrologic Environment, 5(1), 13-25.
2008 Lee, A. R., Hewa, A. G., Pezzaniti, D., & Argue, J. R. (2008). Improving stream low flow regimes in urbanised catchments using water sensitive urban design techniques. Australian journal of water resources, 12(2), 121-132.
DOI WoS7
2007 Hewa Alankarage, G., Wang, Q., McMahon, T., Nathan, R., & Peel, M. (2007). Generalized extreme value dustribution fitted by LH moments for low-flow frequency analysis. Water resources research, 43(6), 10 pages.
DOI Scopus30 WoS29

Year Citation
2024 Andualem, T. G., Hewa, G. A., Boland, J., Peters, S., & Myers, B. R. (2024). Hydroclimate Variability and Sediment Dynamics in Dry Creek Catchment, South Australia. In Hydrology and Water Resources Symposium Hwrs 2024 (pp. 563-570).
2024 Wijekoon, S. D. K., Singh, J., Hewa, G. A., & Kemp, D. (2024). Towards the improved flood estimation in South Australia: Rating Curve Assessment and Multi-Criteria Approach for Gauge Station Prioritisation. In Hydrology and Water Resources Symposium Hwrs 2024 (pp. 589-592).
2024 To, H., Singh, J., Kemp, D., & Hewa, G. A. (2024). Impacts of model resolution and sub-area delineation approach on RORB model performance: A comparative study. In Hydrology and Water Resources Symposium Hwrs 2024 (pp. 326-330).
Scopus1
2021 Akhter, F., Hewa, G., Ahammed, F., Myers, B., & Argue, J. (2021). Performance evaluation of event-based designs of WSUD technologies using continuous simulation modelling. In HWRS 2021: Digital Water: Hydrology and Water Resources Symposium 2021 (pp. 56-70). Australia: Engineers Australia.
2019 Ahammed, F., Hewa Alankarage, G., Argue, J. R., & Tsai, C. W. (2019). ICSM: a new stormwater management strategy to support the urban growth of developing countries in Asia. In G. F. Scott, & W. Hamilton (Eds.), World Environmental and Water Resources Congress 2019: Water, Wastewater, and Stormwater; Urban Water Resources and Municipal Water Infrastructure (pp. 80-92). United States: American Society of Civil Engineers.
DOI
2019 Burger, H., Awad, J., Hewa, G. A., & Van Leeuwen, J. (2019). Simulation of the suppressive effect of zinc on cyanobacteria in paper mill wastewater. In S. Elsawah (Ed.), International Congress on Modelling and Simulation - Supporting Evidence-Based Decision Making: The Role of Modelling and Simulation, MODSIM 2019 (pp. 1084-1090). Australia: The Modelling and Simulation Society of Australia and New Zealand.
DOI Scopus1
2018 Kemp, D. J., & Hewa, G. (2018). An investigation into the efficacy of Australian Rainfall & Runoff 2016 procedures in the Mount Lofty ranges, South Australia. In 2018 Hydrology and Water Resources Symposium, HWRS 2018: Water and communities (pp. 407-428). Australia: Engineers Australia.
Scopus6
2018 Akhter, F., Argue, J., Hewa, G., Ahammed, F., & Myers, B. (2018). Selection of appropriate water-sensitive systems for stormwater quantity control in South Australia. In 2018 Hydrology and Water Resources Symposium Hwrs 2018 Water and Communities (pp. 1-15). Australia: Engineers Australia.
Scopus1
2016 Argue, J. R., Ahammed, F., Hewa, G., Myers, B., & Pezzaniti, D. (2016). ICSM: a strategy to manage flooding in urban catchments experiencing regrowth. In Proceedings of Novatech 2016 9th International Conference on planning and technologies for sustainable management of Water in the City (pp. 1-8). France: GRAIE.
2016 Ratnayake, D. C., Hewa, G. A., & Frizenschaf, J. (2016). Assess flooding potential in the vicinity of the myponga reservoir area (tiers ungauged catchment). In 37th Hydrology and Water Resources Symposium 2016 Water Infrastructure and the Environment Hwrs 2016 Vol. 2016-November.
Scopus1
2014 Ahammed, F., Hewa, A. G., & Argue, J. R. (2014). Flood management using 'stormwater source control' principles in Dhaka City, Bangladesh. In Hydrology and Water Resources Symposium 2014 / Engineers Australia and National Committee on Water Engineering (pp. 413-420). Barton, ACT: Engineers Australia.
Scopus1
2014 Walpita Gamage, S. H. P., Hewa, G. A., & Beecham, S. (2014). Distribution of hydrological losses for varying rainfall and antecedent wetness conditions. In Proceedings of the 11th International Conference on Hydroinformatics (HIC 2014): Informatics and the Environment: Data and Model Integration in a Heterogeneous Hydro World Vol. 2 (pp. 1057-1064). US: Curran Associates, Inc.
2013 Hidayat, S., Pezzaniti, D., & Hewa, A. G. (2013). Impact of time resolution on modeling performance in runoff volume and peak discharge estimation. In J. Piantadosi, R. Anderssen, & J. Boland (Eds.), Modsim 2013 - Proceedings of the 20th International Congress on Modelling and Simulation (pp. 2904-2909). Australia: Modelling and Simulation Society of Australia and New Zealand.
Scopus2
2013 Subhashini, W. H. C., Hewa, G. A., & Pezzaniti, D. (2013). Assessing the ability of infiltration-based WSUD systems to manage channel-forming flow regimes in greenfield catchment developments: a catchment scale investigation. In P. Piantadosi, J. J, A. Anderssen, R. S. Boland, & J. J (Eds.), Proceedings: 20th International Congress on Modelling and Simulation, MODSIM 2013 (pp. 3050-3056). Australia: Modelling and Simulation Society of Australia and New Zealand.
DOI Scopus1
2012 Ahammed, F., Hewa, A. G., & Argue, J. R. (2012). Hydraulic designs of WSUD technologies for stormwater management in Dhaka, Bangladesh. In N. Chileshe (Ed.), Proceedings of the 6th International conference and workshop on the built environment in developing countries (pp. 826-837). Adelaide, Australia: ICBEDC.
2012 Ahammed, F., Hewa, G. A., & Argue, J. R. (2012). Applying WSUD principles to manage stormwater in Dhaka, Bangladesh. In Conference proceedings : technical papers and posters for presentation at Ozwater'12, Australia's National Water Conference and Exhibition (pp. 1-8). Australia: Australian Water Association.
2012 Maheepala, S., Hewa, G. A., Myers, B., Pezzaniti, D., & Sharma, A. K. (2012). Towards the development of stormwater flow management targets in the greater Adelaide region. In The 3rd IWA-RWHM conference & exhibition (pp. 1-10). UK: International Water Association.
2011 Fallah Zadeh, R., Johnson, E. A., Woolford, E. J., & Hewa, A. G. (2011). Applications of Vandewiele's monthly water balance model for predicting climate change effects in Australian catchments. In E. Valentine (Ed.), Proceedings of the 34th IAHR World Congress and 33rd Hydrology and Water Resources Symposium - IAHR 2011 (pp. 1363-1370). Australia: Engineers Australia.
2011 Hewa, G. A., & Peel, M. C. (2011). Ungauged catchment predictions of low flow quantiles: How reliable are they?. In S. Peiris (Ed.), Proceedings of the International Statistics Conference 2011 (pp. 92-101). Sri Lanka: Institute of Mathematical Statistics.
2011 Walpita Gamage, S. H. P., & Hewa, A. G. (2011). Statistical methods for modeling floods in South Australia. In Proceedings of the International Statistics Conference 2011. Sri Lanka: Institute of Mathematical Statistics Collection.
2011 Ahammed, F., Hewa, A. G., & Argue, J. R. (2011). An overview of water sensitive urban design for sustainable stormwater management in South Australia. In Proceedings of the 3rd international conference on water and flood management (pp. 487-496). Bangladesh: Bangladesh University of Engineering and Technology.
2011 Ahammed, F., & Hewa, A. G. (2011). Adaptation to climate change on water resources in Bangladesh. In Proceedings of the 34th IAHR world congress and 33rd hydrology and water resources symposium (pp. 718-725). Australia: Engineers Australia.
Scopus1
2011 Subhashini, W. H. C., Hewa, G. A., & Pezzaniti, D. (2011). Challenges in calibrating storm water management model (SWMM) to a rural catchment. In E. M. Valentine (Ed.), Proceedings of the 34th World Congress of the International Association for Hydro-Environment Research and Engineering: 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering (pp. 1506-1513). Australia: Engineers Australia.
2010 Hewa, A. G., Chowdhury, M. N. H., & Argue, J. R. (2010). Stormwater harvesting at BIANCO site, Gepps Cross, South Australia - in the perspective of monitoring and modelling of Stormwater Quality. In EWRI of ASCE India 2010 (pp. 1-13). Chennai, India: IIT Madras.
2010 Saha, B. K., & Hewa, A. G. (2010). Developing an Improved Flood Forecasting Mechanism for the Township of Gawler, South Australia. In D. Pathak (Ed.), EWRI of ASCE India 2010. Chennai, India: IIT Madras.
2009 Walpita-Gamage, S., Hewa, G., Subhashini, W., Daniell, T., & Kemp, D. (2009). Modelling the extreme floods of South Australian catchments. In Proceedings of the 18th World IMACS and MODSIM09 International Congress (pp. 3435-3441). Australia: The Modelling & Simulation Society of Australia & NZ Inc.
Scopus2 WoS2
2009 Walpita-Gamage, S. H. P., Hewa, G. A., Subhashini, W. H. C., Daniell, T. M., & Kemp, D. (2009). Modelling the extreme floods of South Australian catchments. In 18th World Imacs Congress and Modsim 2009 International Congress on Modelling and Simulation Interfacing Modelling and Simulation with Mathematical and Computational Sciences Proceedings (pp. 3435-3441).
Scopus4
2009 Subhashini, W. H. C., Hewa, G. A., Walpita Gamage, S. H. P., Daniell, T. M., & Kemp, D. (2009). Regional flood studies in South Australia 2: at-site flood frequency analysis. In H2009 32nd Hydrology and Water Resources Symposium, Newcastle: adapting to change (pp. 568-578). Australia: Engineers Australia.
2009 Walpita Gamage, S. H. P., Hewa, G. A., Subhashini, W. H. C., Daniell, T. M., & Kemp, D. (2009). Regional flood frequency analysis in South Australia stage 1: quality of flow data and catchment attributes. In H2009: 32nd Hydrology and Water Resources Symposium, Newcastle: adapting to change (pp. 556-567). Australia: Engineers Australia.
2009 Masan, M. N., & Hewa, A. G. (2009). Developing regional flood frequency models for Victoria, Australia by using Index Flood (IF) approach. In S. R. Anderssen (Ed.), World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation: Interfacing Modelling and Simulation with Mathematical and Computational Sciences, Proceedings (pp. 3407-3413). Australia: The Modelling and Simulation Society of Australia and New Zealand.
Scopus1 WoS2
2009 Walpita Gamage, S. H. P., & Hewa, G. A. (2009). Stormwater management: water quality improvement through wetlands: a case of Warriparinga Wetlands in SA. In WSUD09: Towards water sensitive cities and citizens (pp. 979-986). Australia: Engineers Australia.
2009 Hewa, A. G., Argue, J. R., & Pezzaniti, D. (2009). Setting criteria for channel-forming, environmental and flood flows for waterways in urbanising catchments. In WSUD09: Towards water sensitive cities and citizens (pp. 148-156). Australia: Engineers Australia.
2008 Hewa, A. G. (2008). Comparing the performance of four selected models in low flow frequency analyses - a case of Scott Creek in South Australia. In Proceedings of water down under 2008 incorporating 31st hydrology and water resources symposium and 4th international conference on water resources and environment research (pp. 906-916). Australia: Engineers Australia.
2008 Lee, A. R., Hewa, A. G., & Pezzaniti, D. (2008). Sensitivity analysis and model calibration of the SWMM parameters inthe perspective of low flows. In Proceedings of water down under 2008 incorporating 31st hydrology and water resources symposium and 4th international conference on water resources and environment research (pp. 2253-2260). Australia: Engineers Australia.
2008 Hewa, A. G., & Van Leeuwen, J. A. (2008). Analyses of censored water quality data - a case of Mount Bold resevoir. In Proceedings of water down under 2008 incorporating 31st hydrology and water resources symposium and 4th international conference on water resources and environment research (pp. 2404-2413). Australia: Engineers Australia.
2008 Lee, A. R., Hewa, A. G., & Pezzaniti, D. (2008). Sensitivity analysis and model calibration of the SWMM parameters in the perspective low flows.. In L. Martin, T. Daniell, & M. Leonard (Eds.), Proceedings of Water Down Under 2008 incorporating 31st Hydrology and Water Resources Symposium and 4th International Conference on Water Resources and Environment Research. (pp. 2253-2260). Australia: Engineers Australia.
2008 Nicholson, B. H., & Hewa, A. G. (2008). Performance of four flow measuring techniques under variable tail water condition - a case study of Dry Creek, South Australia. In Proceedings of water down under 2008 (31st hydrology and water resources symposium and 4th international conference on water resources and environment research) (pp. 283-292). Australia: Engineers Australia.
2008 Lee, A., Hewa, G., Pezzaniti, D., & Argue, J. R. (2008). Improving stream low flow regimes in urbanised catchments using water sensitive urban design techniques. In Australian Journal of Water Resources Vol. 12 (pp. 121-132). Informa UK Limited.
DOI Scopus7
2007 Hewa Alankarage, G., Lee, A. R., Pezzaniti, D., & Argue, J. R. (2007). The use of water sensitive urban design (WSUD) to minimise impacts of urbanisation on natural stream low flow regimes. In C. Coombes, & P. P (Eds.), Rainwater and Urban Design conference 2007. Australia: Internnational Water Association.
2007 Hewa Alankarage, G., Wang, Q., Peel, M., McMahon, T., & Nathan, R. (2007). How significant is the bias in low flow quantiles estimated by L- and LH- moments?. In International Congress on Modelling and Simulation: Land, Water and Environmental Management: Integrated Systems for Sustainability (pp. 2500-2505). University of Canterbury, Christchurch, New Zealand: Modelling and Simulation Society of Australia and New Zealand.
2006 Hewa Alankarage, G., Pezzaniti, D., Beecham, S., & Gupta, K. (2006). Selecting an appropriate size domestic rainwater tank for Colombo. In Sustainable Development of Water Resources, Water Supply and Environmental Sanitation (pp. 445-450). Colombo, Sri Lanka: Water Engineering Development Centre (WEDC).
2005 Hewa Alankarage, G., McMahon, T., Peel, M., Wang, Q., & Nathan, R. (2005). Dealing with zero-low flow quantiles in developing regional regression models. In International Hydrology and Water resources Symposium. Canberra, Australia.
2004 Hewa Alankarage, G., & Peel, M. (2004). Application of the truncated generalized extreme value distribution to estimate extreme low flow quantiles - a case study using the Gin Ganga at Agaliya, Sri Lanka. In Proceedings of the International Conference on Sustainable Water Resources Management in the Changing Environment of the Monsoon Region. Sri Lanka: National Water Resources Secretariat.
2003 Hewa, G. A., McMahon, T. A., Peel, M. C., & Nathan, R. J. (2003). Identification of the most appropriate regression procedure to regionalize extreme low flows.. In M. J. Boyd (Ed.), Proceedings of 28th International Hydrology and Water Resources Symposium (pp. 181-188). Australia: Institution of Engineers.
2003 Hewa Alankarage, G. (2003). Low flow characteristics of Onkaparinga River at Scott Creek. In I. Engineers (Ed.), 2003 Regional Conference Proceedings. Australia: Institution of Engineers.
2003 Hewa Alankarage, G., McMahon, T., Peel, M., & Nathan, R. (2003). Identification of the most suitable regression procedure for regionalizing extreme low flows. In M. J. Boyd, J. E. Ball, M. K. Babister, & J. Green (Eds.), Proceedings of the 28th International Hydrology and Water Resources Symposium. Australia: Institution of Engineers.

  • Improved Flood Estimation for Risk Mitigation in South Australia, SA Fire & Emergency Services Commission, 15/03/2024 - 15/03/2027

  • Plantation water use and environmental asset management in plantation forests, Forest and Wood Products Australia, 05/06/2023 - 21/06/2025

  • Cwth: Optimising the management of plantation, water and environmental assets, Forest and Wood Products Australia, 01/03/2019 - 15/12/2022

  • Ind: Optimising the management of plantation, water and environmental assets, OneFortyOne Plantations, 01/03/2019 - 15/12/2022

Courses I teach

  • CIVE 3009 Hydraulics and Hydrology (2025)
  • CIVE 5065 Design of Flood and Drainage Systems (2025)
  • CIVE 3009 Hydraulics and Hydrology (2024)
  • CIVE 5065 Design of Flood and Drainage Systems (2024)

Programs I'm associated with

  • LHMI - Bachelor of Engineering (Honours)
  • LMCL - Master of Engineering

Date Role Research Topic Program Degree Type Student Load Student Name
2025 Co-Supervisor Trends in rainfall and temperature in South Australia and their connection to climate and land use change Doctor of Philosophy Doctorate Full Time Sachinda Ekanayake
2024 Principal Supervisor 383- Enhancing Hydrological Accuracy through Advanced Rating Curves and Gauged Flow Modelling in SA Catchments Doctor of Philosophy Doctorate Full Time Chamaka Karunanayake
2024 Co-Supervisor Harnessing Water-Sensitive Urban Design (WSUD) for Climate Change Resilience: An analysis of planning policies and practices in Greater Adelaide, South Australia Doctor of Philosophy Doctorate Full Time Mr Obed Ankrah
2024 Principal Supervisor 386-Comprehensive Analysis of Hydrological Losses in SA: Integrating Parametric and Non-parametric Approaches Doctor of Philosophy Doctorate Full Time Miss Tharindi Wijekoon
2023 Co-Supervisor 110321 - Estimating plantation forest water use in the south east of South Australia Doctor of Philosophy Doctorate Full Time Mr Pasindu Dharshan Karunatilaka
2022 Co-Supervisor Optimisation of phytocapping technology using engineered growth media and selected native plant species for Southern Australia  Doctor of Philosophy Doctorate Full Time Arifuzzaman Arifuzzaman

Date Role Research Topic Program Degree Type Student Load Student Name
2022 - 2024 Co-Supervisor Effectiveness of a rainwater tank rebate scheme in reducing runoff volume in a residential catchment Master of Research (Civil Engineering) Master Full Time Mr Zenghao Xu
2022 - 2025 Principal Supervisor Hydrological and geomorphological responses to urbanisation and climate variability: a case study of Dry Creek, South Australia Doctor of Philosophy Doctorate Full Time Mr Tesfa Andualem
2018 - 2022 Co-Supervisor Investigating the hydraulic efficiency of distributed curbside infiltration systems to manage stormwater runoff- a catchment scale study Doctor of Philosophy Doctorate Part Time Mr Hussain Mustafa Shahzad
2017 - 2022 Principal Supervisor Development of an integrated monochloramine residual management tool Doctor of Philosophy Doctorate Part Time Mr Md Hossain
2016 - 2021 Principal Supervisor System performance and economic feasibility assessment of conventional and hybrid stormwater drainage systems Doctor of Philosophy Doctorate Full Time Mrs Farjana Akhter
2016 - 2021 Principal Supervisor Deficit irrigation and water quality dynamics for tomato production in a greenhouse environment Doctor of Philosophy Doctorate Full Time Mr Jeet Chand
2016 - 2021 Co-Supervisor Investigation of the presence and control of cyanobacteria in paper mill wastewaters Doctor of Philosophy Doctorate Part Time Mr Hugh Alexander Burger
2016 - 2023 Principal Supervisor An exploration of the impact of initial soil moisture on initial loss and catchment response in partly urbanised flash flood catchments in a Mediterranean climate Doctor of Philosophy Doctorate Part Time Mr Dinesh Ratnayake
2015 - 2022 Co-Supervisor Comparison of potential methods for fluoride removal from groundwaters in the Anangu Pitjantjatjara Yankunytjatjara Lands with a view to developing a novel, low-cost treatment method Master of Science (Sustainable Environments) Master Part Time Mr Damian Mortimer
2011 - 2016 Principal Supervisor Dynamics of emitter clogging in relation to subsurface thermal variation Doctor of Philosophy Doctorate Full Time Mr Md. Moinul Oliver
2010 - 2014 Principal Supervisor Probabilistic nature of hydrological losses in South Australian humid catchments Doctor of Philosophy Doctorate Full Time Miss Sithara Walpita Gamage
2010 - 2014 Principal Supervisor An investigation into the feasibility of stormwater management using WSUD principles in Dhaka, Bangladesh Doctor of Philosophy Doctorate Full Time Mr Faisal Ahammed
2009 - 2014 Principal Supervisor Methodologies to assess the performance of water sensitive urban design systems in greenfield catchment developments Doctor of Philosophy Doctorate Full Time Ms Chathurika Subhashini Wella Hewage
2005 - 2009 Principal Supervisor Methodologies to maintain pre-urbanised low flow characteristics in urbanised catchments using water sensitive urban design (WSUD) measures Doctor of Philosophy Doctorate Full Time Ms Ah Lee

Date Role Board name Institution name Country
2021 - 2022 President Sri Lankan Engineers in South Australia (SLESA) Sri Lankan Engineers in South Australia (SLESA) Australia

Date Role Membership Country
2022 - ongoing Member Engineers Australia -
2018 - ongoing Co-Founder Sri Lankan Engineers in South Australia -
2003 - ongoing Member Hydrological Society of South Australia -

Date Title Engagement Type Institution Country
2018 - ongoing Community supporter Scientific Community Engagement Sri Lankan Engineers in South Australia (SLESA) Australia
2002 - ongoing Community supporter Public Community Engagement Adelaide Sri Lanka Buddhist Vihara Australia

Date Role Editorial Board Name Institution Country
2025 - ongoing Editor MDPI Hydrology Special Issue: Advances in Flood Studies: Enhancing Data Collection, Rating Curves, and Hydrological Analyses MDPI Hydrology Switzerland
2025 - ongoing Associate Editor Springer Nature; Geospatial Innovations in River and Catchment Geomorphology for Sustainable Water Management Springer Nature Germany
2021 - 2023 Associate Editor MDPI Hydrology Special Issue: Climate change impact on Hydrology and Water Resources MDPI Hydrology Switzerland

Date Event Name Event Type Institution Country
2025 - 2025 MODSIM 2025 Conference CSIRO, UniSA, University of Adelaide and Flinders University Australia
2025 - 2025 4th International Conference in Water & Environmental Engineering 2025 (iCWEE2025) Conference GCSTMR and University of Western Sydney Australia

Date Engagement Type Partner Name
2024 - ongoing Collaboration Department for Water and Environments

Date Title Type Institution Country
2007 - ongoing PhD Thesis Examiner Thesis Review Several Universities Australia and New Zealand Australia
2005 - ongoing Journal Reviewer Journal Review Varying institutions Australia

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