Academic and Professional Qualifications
Research Interests
- Water Resource Engineering & Geoinformatics
- Water Quality
- Water Quality Analysis
- Watershed Management
- Water Resources Engineering
- Hydrological Modeling
- Irrigation
Teaching Subjects
Land and water resources engineering
Geographic Information Systems
Education
PhD Hydrology and Water Quality, - 2002, University of Newcastle upon Tyne, UK
Master of Science (M.Sc.) in Remote Sensing and Geographical Information Systems (GIS) - 1997, Asian Institute of Technology (AIT), Bangkok, Thailand.
Bachelor of Science in Agriculture (B.Sc. Agric. Hons, First Class) - 1993, Faculty of Agriculture, University of Peradeniya, Peradeniya. Sri Lanka.
Appointments
- Head - Department of Agricultural Engineering, Faculty of Agriculture, University of Peradeniya, Peradeniya, Sri Lanka
- President, Geo-Informatics Society of Sri Lanka, 2005/2006.
- Secretary, Board of Study in Agricultural Engineering, Postgraduate Institute of Agriculture, University of Peradeniya, January, 2010 – January, 2016
- Chairperson, Board of Study in Agricultural Engineering, Postgraduate Institute of Agriculture, University of Peradeniya, January, 2016 -January, 2019, February, 2022 todate.
- Programme coordinator, Geo-Informatics postgraduate programme, Postgraduate Institute of Agriculture, University of Peradeniya, 2006 & from 2013 todate
- Programme coordinator, Agricultural and Biosystems Engineering postgraduate programme, Postgraduate Institute of Agriculture, University of Peradeniya, 2004-2006.
- Coordinator, Crossing Boundaries Project, Postgraduate Institute of Agriculture, University of Peradeniya, 2009-2011.
- Coordinator, IDRC-SAWA Fellowship Project, Postgraduate Institute of Agriculture, University of Peradeniya, 2012 – to date.
- Chairperson, Publication and Public Relations Sub Committee, Faculty of Agriculture, University of Peradeniya, 2013, 2014.
ACADEMIC DISTINCTIONS & AWARDS
Awards
- Tim Kendall memorial prize for the best performance in the M.Sc. program, AIT, Thailand, August, 1997.
- Yoh Kurosowa prize for the best performance among women graduates, AIT, Thailand, August, 1997.
- Winner of the Young Engineers section of the ‘IESL/IWMI Best Technical Paper Competition’, 2002.
- Best Presentation award in ‘Soil and Water Management’ session of the PGIA Annual Congress, 2002.
- Best Technical Paper Award at the International Conference on Natural Disaster Management and Infrastructure Management, 7-8 November, 2012, Colombo, Sri Lanka.
- Presidential Award for Scientific Research published in the year 2008
- NSF Awards for Supervision of research Degrees (SUSRED) – 2017.
Publications
JOURNAL ARTICLES
Wickramasinghe, M.R.C.P., Dayawansa, N.D.K., Jayasiri, M.M.J.G.C.N. and Ranjith Premalal De Silva, A study on external pressures of an ancient irrigation cascade system in Sri Lanka, Agricultural Systems, Volume 205, https://doi.org/10.1016/j.agsy.2022.103593.
Jayasiri, M.M.J.G.C.N., Dayawansa, N.D.K. and Sudhir-Yadav (2023). Assessing the roles of farmer organizations for effective agricultural water management in Sri Lanka, Agricultural Systems, Volume 205, https://doi.org/10.1016/j.agsy.2022.103587.
Jayasiri, M.M.J.G.C.N., Sudhir-Yadav, Dayawansa, N.D.K., Propper, C.R., Kumar, V., Singleton, G.R. (2022). Spatio-temporal analysis of water quality for pesticides and other agricultural pollutants in Deduru Oya river basin of Sri Lanka. Journal of Cleaner Production, 330, 129897, https://doi.org/10.1016/j.jclepro.2021.129897.
Jayasiri, M.M.J.G.C.N., Yadav, S., Propper, C.R., Kumar, V., Dayawansa, N.D.K. and Singleton, G.R. (2022). Assessing Potential Environmental Impacts of Pesticide Usage in Paddy Ecosystems: A Case Study in the Deduru Oya River Basin, Sri Lanka. Environmental Toxicology & Chemistry, 41:343-355, https://doi.org/10.1002/etc.5261.
Jayasiri, M.M.J.G.C.N., Yadav, S., Dayawansa, N.D.K. & Ingold, K. (2022). Managing agricultural water resources: Addressing the complexity of innovation, social perspectives, and water governance in Sri Lanka. Irrigation and Drainage, 1– 15. https://doi.org/10.1002/ird.2693
Hemachandra, E.M.G.P., Dayawansa, N.D.K. and De Silva R.P. (2021). Application of Standard Precipitation Index (SPI) to assess rainfall variability in a major agricultural area in Dry Zone of Sri Lanka. Tropical Agricultural Research, 32(3): 276-286.
Wickramasinghe, M.R.C.P., De Silva, R.P. & Dayawansa, N.D.K. (2021). Climate Change Vulnerability in Agriculture Sector: An Assessment and Mapping at Divisional Secretariat Level in Sri Lanka. Earth Syst Environ, https://doi.org/10.1007/s41748-021-00206-9
Hemachandra, E.M.G.P., Dayawansa, N.D.K. and De Silva, R.P. (2020). Developing a Composite Map of Vulnerability to Rainfall Extremes in Sri Lanka. In Water, Flood Management and Water Security Under a Changing Climate Springer, Cham., (pp. 63-84).
Gunawardena, D.L.K. and Dayawansa, N.D.K. (2020). Assessment of Water Availability for Agriculture and Other Uses–Development of Indices for Deduru Oya River Basin in Sri Lanka. In Water, Flood Management and Water Security Under a Changing Climate. Springer, Cham., (pp. 187-200)
Dayawansa, N.D.K. and Ranjith Premalal De Silva (2020). Geo-Informatics: Contribution from spatial sciences for agricultueal development and food security, Agricultural research for sustainable food systems in Sri Lanka, Volume 2: Pursuit for advancements, R.P. De Silva, G. Pushpakumara, P. Prasada and J. Weerahewa (Eds), Springer Nature Singapore, (pp 239-254).
