Prof. D.T. Udagedara

Prof. Tharanga Udagedara 

Professor in Geology

PhD (Saitama, Japan)
MSc (Leeds, UK)
BSc (Peradeniya, Sri Lanka)
Phone : +94 552226676

  • Hydrogeology: Groundwater movement and chemistry, Saltwater intrusion, Water-rock interaction experiments
  • Rock weathering: Salt weathering, Weathering of antient monuments
  • Water quality analysis and Water chemistry

Journal Articles

Garusingha, S. S., Wijewardana, Y. N. S., and Udagedara, D. T. (2023). A Review-Comparison of Different Soil Water Content Estimation Methods. Sri Lankan Journal of Applied Sciences, 2(01), 69-80.

Sandaruwan, C., Madugalla, N., Adikaram, M., Pitawala, A., and Udagedara, T. (2023). Microtexture and grain size characteristics of lagoonal and riverine coastal deposits along the southeastern coast of Sri Lanka: implication for paleoenvironment. Arabian Journal of Geosciences, 16(2), 111.

Rathnayake, R.M.M.L., Henagamage, A.P., Premetilake, M.M.S.N. and Udagedara, D.T., (2022). Impact of Hardness, Fluoride and Nephrotoxic Trace Metal Contaminants in Drinking Water Sources on CKDu Progression in Uva Province, Sri Lanka. Clin Case Rep. Int. 6: 1432.

Sandaruwan, C., Adikaram, M., Madugalla, N., Pitawala, A., Ishiga, H., and Udagedara, D.T., (2022). Mineralogy and Geochemistry of beach sediments associated with the Precambrian crystalline rocks (Vijayan Complex) of Sri Lanka, perspective for heavy minerals. Regional Studies in Marine Science.

Kanagarajah, K., Kreshaanth, S., Gunathilake, C., Udagedara, D.T., and Manipura, A., (2020) Investigation of electrochemical denitrification of prawn-farm wastewater, Separation Science and Technology. (Published online: 04 Mar 2020).

Jayawardana, D.T., Madusanka, R.M.T.D., Jayasinghe, R.M.N.P.K., Adikaram, A.M.N.M., and Udagedara, D.T., (2019) Sedimentary geochemistry of alluvial overburden in the primary gem deposit of Pelmadulla, Sri Lanka. Journal of the National Science Foundation of Sri Lanka 47(2), 221-234.

Udagedara, D.T., Oguchi, C.T., and Gunatilake, A.A.J.K., (2017) Combination of chemical indices and physical properties in the assessment of weathering grades of sillimanite-garnet gneiss in tropical environment. Bull. Eng. Geol. Environ. 76(1), 145–157.

Udagedara, D.T. and Oguchi, C.T., (2017) Evaluation of geomechanical and geochemical properties in weathered metamorphic rocks in tropical environment; a case study from Samanalawewa hydropower project, Sri Lanka. Geoscience 21(3), 441-452.

Jayawardana, D.T., Udagedara, D.T., Silva, A.A.M.P., Pitawala, H.M.T.G.A., Jayathilaka, W.K.P., and Adikaram, A.M.N.M., (2016) Mixing geochemistry of cold water around non-volcanic thermal springs in high-grade metamorphic terrain, Sri Lanka. Chemie der Erde – Geochemistry 76, 555–565.

Udagedara, D.T., Jayawardana, D.T., and Pelpitiya, S.K., (2015) Assessment of chemical variability of major bottled waters in Sri Lanka. Environ. Earth Sci. 73, 7967–7967.

Udagedara, D.T., Pitawala, H.M.T.G.A., and Dharmagunawardhane, H.A., (2014) Use of heavy metals and trace elements in groundwater as a tool for mineral exploration: a case study from Udawalawe, Sri Lanka. Asian J. Water, Environ. Pollut. 11, 59–67

Conference Proceedings

Senarath, S. A. S, Udagedara, D. T. and Abeygunawardena, A. P. (2021) Screening for microplastics in surface waters of Badulu Oya, Sri Lanka, Proceedings of the International Conference on Applied and Pure Sciences (ICAPS 2021-Kelaniya) Volume 1, Faculty of Science, University of Kelaniya, Sri Lanka. P 123.

Godage, G.I.T., Udagedara D.T., and Ritigala H. M. T. S., (2020) The potential use of reverse osmosis concentrate water as water source for irrigation, 4th International Research Conference (Online), Uva Wellassa University, Badulla, Sri Lanka. July 29-30, 2020.

Dulmini, K.K.V., Samaranayake, S.A., Udagedara D.T., and Bandara, H.M.D.A.H., (2019) Identifying the extent of leachate plumes using electrical resistivity method a case study from open municipal solid waste dumpsite in Badulla, ICSECM2019, December 14, 2019, p 117.

Watagoda R.B., Singhalage, I.D., and Udagedara, D.T., (2019) Screening of Cd, Cr and Zn tolerant bacteria in the Rhizosphere of Amaranthus viridis, Proceedings of International Forestry and Environment Symposium 2019, October 11-12, 2019, P 156.

Sinthuparkavi, S., Udagedara, D.T., and Gamachchige, N.T.S.G., (2018) Investigation of the effectiveness of salt barrage in Jaffna Peninsula (5th Phase), Proceedings of the International Research Symposium, Uva Wellassa University, Badulla, Sri Lanka, February 1-2, 2018, p 227.

Udagedara, D.T., Oguchi, C.T., and Gunatilake, A.A.J.K., (2016) Effect of dissolution of minerals on rapid rock weathering: An experimental study, Goldschmidt 2016, June 28, 2016, Yokohama, Kanagawa, Cambridge Publications, Cambridge University Press.

Jayawardana D.T., Udagedara T., and Pitawala A., (2016) Geochemistry of water around non-volcanic thermal springs in high grade metamorphic terrain, Sri Lanka, Goldschmidt 2016, June 30, 2016, Yokohama, Kanagawa, Cambridge Publications, Cambridge University Press.

Oguchi, C.T., Kodama, S., Rajib, M., and Udagedara, D.T., (2016) Salt efflorescence due to water-rock interaction on the surface of tuff cave in the Yoshimi-Hyakuana Historic Site, central Japan, EGU General Assembly 2016, April 19, 2016, Vienna, Geophysical Research Abstracts Vol. 18, European Geosciences Union.

Udagedara, D.T., Oguchi, C.T., and Gunatilake, A.A.J.K., (2015) Assessment of weathering grades for different chemical and geomechanical properties; a Sri Lankan case study, Japanese Geoscience Union Meeting-2015, May 26, 2015, Makuhari, Chiba, Japanese Geoscience Union.

Udagedara, D.T., Oguchi, C.T., (2014) Use of rock properties in classification of weathering grades: a Sri Lankan case study, Japanese Geoscience Union Meeting-2014, April 30, 2014, Yokohama, Kanagawa, Japanese Geoscience Union.

Gunatilake, J. Udagedara, T., and Iwao, Y., (2013) Study of Rapid rock Weathering: A Case Study from Samanalawewa Hydropower Project, Conference on Sri Lanka – Japan Collaborative Research 2013, March 23, 2013, Peradeniya, University of Peradeniya, p. 89.

Academic Warden – Uva Wellassa University (2020-2023)

Deputy Senior Student Councillor – Faculty of Applied Sciences (Dec. 2017 – Dec.2020)

Member – Support Advisory Board (Apr. 2017 – Apr. 2021)

Secretary – 2nd International Research Symposium of Uva Wellassa University (2020)

Cooperate Member: Institute of Geology, Sri Lanka.

Sponsored Member: International Association of Hydrogeologists

Cooperate Member: Institute of Geology, Sri Lanka.

Member: International Water Association

Member: Japanese Geoscience Union.

Member: Geological Society of Sri Lanka.


NRC Merit Awards for Scientific Publications (2015)

Monbukagakushyo scholarship for Doctoral study at Saitama University, Japan (2013)

Shell Centenary Scholarship for MSc. Hydrogeology at the University of Leeds, England(2006)

Award of Academic Excellence, University of Peradeniya, Sri Lanka (2005)

  • MRT 151-3    Earth Materials and Processes
  • MRT 253-2   Principles of Hydrogeology
  • MRT 378-2   Advanced Hydrogeology
  • MRT 478-2   Water Wells and Pumps
  • MRT 372-1   Water Chemistry Laboratory
  • MRT 382-1   Water Treatment Laboratory