BSc Eng ( Moratuwa ) , MSc ( Saitama ) , PhD ( Saitama )

Senior Lecturer Grade II, Department of Civil Engineering,
University of Moratuwa,Moratuwa.

e mail:   lalith@uom.lk

Tel.: 011-2650567 Ext. 2116

Fax: 011-2651216

       Academic Qualifications
       Recognised Training
       Professional Qualifications
       Professional/Academic Experience 
       Major Responsibilities Held
       Other Responsible Experience
       Consultancy Work Undertaken
       Contribution To Research

       Papers presented at International Workshops
       Proceedings of Local (in Japan) Symposia 
       Research Journal & Conference Papers (Refereed)
       Theses Submitted
       Other Academic Achievements 
              

Academic Qualifications

  Educational Qualification                                                               Place                                                                                             Period

  Primary Education                                                     Nalanda Central College, Minuwangoda, Sri Lanka                                          1976 - 1981

  Secondary Education                                                 Ananda College, Colombo 10, Sri Lanka                                                        1982 - 1989

  B.Sc. in Civil Engineering(First Class Honours)           University of Moratuwa, Sri Lanka                                                                  1992 - 1996

  M.Sc. in Civil & Environmental Engineering (Hydroscience & Geotechnology) Saitama University, Japan                                           1997 - 1999

  Ph.D. in Environmental Science & Technology (Environmental Hydraulics/Ecological Engineering) Saitama University, Japan               2002 - 2005

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Recognised Training

• International Workshop on Non-point Source Pollutant Management in Agricultural Watersheds organized by Korea Rural Community Corporation and INWEPF (International Network for Water and Ecosystem in Paddy Fields), Seoul, Korea (October, 2009).

  • Asia Pacific Water Forum (APWF) Water Knowledge-Hub Workshop on Water Quality Management in River Basins conducted by Asian Development Bank -Global Water Partnership (ADB-GWP) Program, Seoul, Korea (August, 2009).

   

  •  Workshop on Citarum Water Resources Management Investment Program, Indonesia by Asian Development Bank-Global Water Partnership (ADB-GWP) and K-Water (Korea Water Resources Corporation), Seoul, Korea (August, 2009).

   

  •  World City Water Forum (WCWF) Workshop on Basin Water Resources Management and Basin Water Quality and Ecology, Inchon, Korea (August, 2009).

   

  •  Certification course in Microsoft Access 2000/ Microsoft Advanced Access 2000 Database Management and SQL (Structured Query Language) Programming by the Infomatics International, Singapore (February/April, 2002).

   

  •  Certification course in Project Planning, Scheduling and Management using Primavera Project Planner (P3.0) by the Training Department, Primavera Systems Inc., Singapore (February, 2001).

   

  •  Technical Workshop on Mass-scale Water Desalination: Plant Operation, Maintenance and Water Quality Management by AquaGen (Nanyang Technological University, Singapore), Singapore (February, 2000).

   

  •  Training Worksop on Groundwater Modelling, Hydroscience and Geotechnology Laboratory, Saitama University, Japan (September 1,999).

   

  •  Short Course on Structural Design of High-Rise Buildings conducted by the Buildings and Structural Engineering Division, Department of Civil Engineering, University of Moratuwa, Sri Lanka (November, 1996).

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Professional Qualifications

•  Corporate Member, Institution of Engineers, Sri Lanka (CEng., MIE-SL)

•  Member, The Intl Association for Hydro-Environment Eng and Research (IAHR)

•  Associate Member, Japanese Society of Civil Engineers (JSCE)

•  Member, Japan Society on Water Environment (JSWE)

•  Member, Japan Society of Hydrology and Water Resources (JSHWR)

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• Senior Lecturer (University of Moratuwa, Sri Lanka) – Provision of effective teaching, related administration duties and the promotion and engaging in research and scholastic activities appropriate to the effective performance of my academic duties including lecturing, tutoring, examining, and laboratory supervision. Routinely give academic supervision and instruction, carry out examination work, and perform administrative tasks and other duties.

  •  Representative Member of the IESL (Institution of Engineers, Sri Lanka) Civil Engineering Sub Committee for the new course curriculum development activities of the IESL Engineering Course

  •  Specialist Researcher ( UNESCO-ICHARM ) – Major responsibilities included further improving a large scale watershed model targeting basin-wide hydrologic & material cycle modelling for Integrated Water Resources Management (IWRM), research on inundation modelling and disaster risk reduction, field experimentation, data collection and evaluation of land-use effects on river water quality, GIS applications in water management etc. In addition, I served as a resource person for various ADB, JICA and World Bank/UNESCO funded training programs hosted by ICHARM, including Flood Hazard Mapping Training, Comprehensive Tsunami Disaster Prevention Training and Local Emergency Operation Plan with Flood Hazard Map Training. It was a challenge to take part in training programs for the senior executives and trainers who have extensive field experience in their disciplines, mainly high ranking government officials with long term civil engineering and administrative backgrounds. I visited China, Korea, Australia and Singapore, representing ICHARM at various occasions and participating in research seminars as a presenter and resource person.

  •  Adjunct Lecturer ( National Graduate Institute for Policy Studies (GRIPS), Tokyo, attached to the Graduate Disaster Management Policy Program, the Masters program at the International Centre for Water Hazard and Risk Management (UNESCO-ICHARM), Japan), teaching subjects and conducting practical classes to the international postgraduates, many of whom were senior and mid-career level engineers holding reputable managerial and administrative posts at various Civil Engineering related governmental organizations, especially from East- and South-Asian, African and South American countries. The main areas of research guidance included hydrology, watershed planning and management, advanced computer programming (FORTRAN/Visual Basic), watershed, water quality and quantity modelling, disaster mitigation and planning etc. In addition, I organized numerous field visits for students and also supervised the Masters research works of three students, two from Bangladesh and another from China, focusing on issues related to ungauged river basin management, flood and inundation modelling and water quality degradation.

  •  Post-doctoral Research Fellow ( Japan Society for the Promotion of Science –JSPS, Ecological Engineering Lab, Department of Environmental Science & Technology, Saitama University, Japan ) - The research focus was on the"Use of Biological Methods for Sustainable Management and Restoration of Wetland and Lake Ecosystems". In addition, field experimentation and laboratory tests were undertaken to study the effects of spates of different magnitudes on aquatic vegetations on a sandbar of a frequently disturbed river in Japan and fine sediment retention as affected by annual shoot collapse to understand the role of plants as ecosystem engineers in a lowland streams. Main duties included management of funds and laboratory facilities, coordination of external authorities for scheduling field experiments and lab tests, guiding and tutoring undergrad/postgraduate students etc.

  •  Senior Lecturer conducting practicals, experiments, research projects for postgraduate students, Project Supervisor of Research Projects for undergraduate students

  •  Senior Lecturer performing administration duties and projects assigned by the department; participating in various committees and administrative assignments; participating in faculty development programmes etc.

  •  Co- ordinator , EXMO2010 Faculty-wide University Exhibition, Hydraulic and Water Resources Engineering Division, University of Moratuwa.

  •  Coordinator, Department of Civil Engineering, University of Moratuwa, for the Washington Accord and Institute of Civil Engineers (Engineering Council, UK) Accreditation Programs for the B.Sc. Engineering (Hons.) Degree by Institution of Engineers, Sri Lanka (IESL) and team from ICE/UK (2010).

  •  Overall coordinator from the Ecological Engineering Division, Saitama University, Japan, for the research collaboration with The University of Newcastle & University of Canberra, Australia. Overall planning for research, logistic and funding arrangements, monitoring progress, extensive field visits for data collection and field verification at sites in Australia and Japan for the Lake Ecology and Wetland Management Program (2002 – 2007; ~60.0 Mil. JPY).

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• Attached to the Hydraulic and Water Resources Engineering Division, Department of Civil Engineering, University of Moratuwa, I am currently actively involved in academic research in the following main research areas:

  •  Hydrology; Watershed & Groundwater Management/Modelling; GIS tools in Watershed/Water Resources Management; Integrated Water Resources Management (IWRM); Issues on Regulated Rivers

  Doctoral Degree

  •  Field experimentation and modelling of growth and morphological traits of aquatic sedges and their adaptations to water depth: A comparative study and implications for river restoration and ecosystem management

  •  The core research comprised of collaboration with two Australian universities to monitor eco-physiological characteristics of temperate/Mediterranean wetlands, lake and river littoral ecosystems with special reference to species adaptations, followed by modelling (FORTRAN/VBA) of responsive adaptation of wetland species to water depth. Under the sub-themes of the main research envisaged, the role of emergent macrophytes in the nutrient cycling of wetlands (focus was on two wetlands in Goulburn and Albury, NSW, Australia) and interaction between the hydrous sediment layer and submerged macrophytes in Myall Lake, NSW, Australia were also investigated. The research outcomes were found to be useful in developing management implications for wetland littoral zone management as well as for river restoration projects in Japan and elsewhere.

  •  In addition to the research component, as the Core team leader of the 3-year project, I was responsible for the overall programme development, execution and compilation of results, covering extensive research exchanges among counterparts (Saitama University, Japan and University of Newcastle & University of Canberra, Australia), organizing of seminars, acquiring necessary permits and arranging all logistics and 16 field trips to Australia over the project duration.

  Postgraduate Research

  •  After completion of my PhD studies, I joined the Ecological Engineering Lab, Department of Environmental Science & Technology, Saitama University, Japan as an Invited Researcher and also served as a Water Quality Testing Engineer at the Environmental Testing Laboratories, Japan, my first working experience in highly target-oriented Japanese working environment. My exposure included research and modelling, field water quality sampling and laboratory testing and other teaching and academic tasks.

  Masters Degree Research

  •  Groundwater Control and Mitigation of Land Subsidence during Drought Seasons by using Telemetry and Real-time Pumping Optimization in Saitama, Japan.

  •  The core research focused on the mitigation of land subsidence occurring as a result of unplanned extraction of groundwater from deep subsurface layers in Kanto (Tokyo) Basin during drought seasons. It involved extensive field data collection and monitoring procedures followed by the development of a subsurface flow model with existing pumping-well network and deployment of a telemeter network to monitor and determine water table fluctuations in real time. A parameterized land subsidence sub model was used to predict future subsidence by ground settlement. A dynamic time series modelling technique was introduced to accommodate more recent telemeter data into modelling procedures, and measured water level fluctuation, pumping and land subsidence data were fed into the main simulation-optimization model to determine optimal pumping rates at each sub-basing to adequately suppress future land subsidence. Based on the research conducted in collaboration with the Atmosphere and Water Management Bureau of Saitama Prefectural Government, a joint monitoring and management approach was proposed for the basin which had been identified as a critical subsidence prone region.

  Following is the list of peer-reviewed publications published in both international and local journals and conferences.

   

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Papers Presented at International Workshops

Rajapakse, H. , Inomata, H., & Fukami, K. (2009). Diffuse Source Particulate-matter Pollution Modeling in a Semi-Urbanized Agricultural Basin in Japan using Process-based WEP and an Erosion-transport Model. Proceedings of the 13th International Conference on Diffuse Pollution and Integrated Watershed Management (IWA-DIPCON 2009), pp. 194-195, Seoul, Korea, 12-15 October 2009.

Asaeda, T., Rajapakse, L. and Kanoh, M. (2009). Retention rate of fine sediments due to the annual shoot collapse; Sparganium erectum as an ecosystem engineer in a lowland stream. Proceedings of the 12th European Weed Research Society (EWRS) International Symposium on Aquatic Weeds, pp. , Jyväskylä, Finland, 24-28 August 2009.

Chavoshian, A., Miyake, K., Sugiura, T., Hai, P. T., & Rajapakse, H. (2009). Charting ICHARM's strategy for integrated flood risk management in the Lower Mekong River Basin. Proceedings of the 7th Annual Mekong Flood Forum (AMFF-7), Bangkok, Thailand, 13-14 May 2009.

Rajapakse, H. , Inomata, H., & Fukami, K. (2008). Effects of surplus fertilizer loading on stream and subsurface water quality in Yata River Basin, Japan: An integrated, basin-wide modeling approach. Proceedings of the 4th Annual Conference of the Asia Pacific Association of Hydrology and Water Resources (APHW), Beijing, China, 03-05 November 2008.

Lalith Rajapakse , Takashi Asaeda, & Takeshi Fujino (2007)."Adaptations of Eleocharis sphacelata to water regime: Modeling of growth, morpho-ecological traits and decomposition to identify management needs", Proceedings of TAAL 2007: The 12th World Lakes Conference, Jaipur, India, 28 October-2 November 2007.

Takashi Asaeda, Lalith Rajapakse & Takeshi Fujino (2006)." Modelling of the Resource Allocation of the Above- and Belowground Biomass of Eleocharis sphacelata ; Emergent Plants in Wetlands and Implications of their Surviving Strategies", Proceedings of ICEM 2006: International Conference on Ecological Modelling, pp. , Yamaguchi, Japan, 28 August-01 September, 2006.

Asaeda, T., Sanderson, B., Redden, A. & Rajapakse, L . (2006)."Nutrient cycles and vegetation characteristics of gyttja layer in Lake Myall, Australia ", Proceedings of SWS 2006: Annual Session of Soil and Water Society, pp. , Cairns, Australia, 09-14 July, 2006.

Takashi Asaeda, Takeshi Fujino, Lalith Rajapakse (2006)."Effects of flood patterns on the growth of Phragmites japonica - Applications for flood plain management", Proceedings of ICLEE 2006: International Conference on Ecological Restoration in East Asia 2006 , International Consortium of Landscape and Ecological Engineering, pp. , Osaka, Japan, 16-18 June 2006.

Lalith Rajapakse , Takashi Asaeda, Takeshi Fujino & Jagath Manatunge (2005)."Adaptations in growth and survival strategies of Eleocharis sphacelata in response to different water regimes", Proceedings of the JSCE 2005: 7th International Summer Symposium of the Japanese Society of Civil Engineering, pp. 323-326, Tokyo, Japan, 30 July 2005

Asaeda, T., Sanderson, B., Redden, A., Manatunge, J., Rajapakse, L . & Fujino, T. (2005)."Distribution of charophytes and other submerged macrophytes in Myall Lake, Australia, and its role in nutrient cycling". Proceedings of the ASLO 2005: Summer Meeting of the American Society of Limnology and Oceanography, pp. , Santiago de Compostela, Spain, 19-24 June 2005.

Takashi Asaeda, Brian Sanderson, Anna Redden, Jagath Manatunge, & Lalith Rajapakse , 2004."Distribution of Charophytes and other submerged macrophytes in Myall Lake and its role in the nutrient cycling". Proc. of the ASPAB 2004: 19th Annual Conference of the Australian Society for Physics and Aquatic Botany, Adelaide, Australia, 5-8th December 2004.

Lalith Rajapakse , Takashi Asaeda, Jagath Manatunge, Kian Siong, Daniel Shilla, Anna Redden and Brian Sanderson, 2004."The role of Charophytes in production and nutrient cycling in Myall Lake, NSW, Australia". Proceedings of IRGC 2004: the 4th Symposium of the International Research Group on Charophytes on Extant and Fossil Charophytes, pp. 50, Robertson, Australia., 25-27 September 2004.

Anna Redden, Takashi Asaeda, Lalith Rajapakse , Jagath Manatunge, Brian Sanderson and Joanne Wilson (2005)."Seasonal distribution and biomass of Charophytes in Myall Lake, a large and shallow near-pristine lake in NSW, Australia". Proceedings of IRGC 2004: the 4th Symposium of the International Research Group on Charophytes, pp. 53, Robertson, Australia. 25-27 September 2004.

Takashi Asaeda, Brian Sanderson, Anna Redden, Jagath Manatunge and Lalith Rajapakse , 2004."Distribution and abundance of Charophytes and other submerged macrophytes in relation to gyttja thickness and light availability". Proceedings of IRGC 2004: the 4th Symposium of the International Research Group on Charophytes on Extant and Fossil Charophytes, pp. 11, Robertson, Australia, 25-27 Sept, 2004.

Takashi Asaeda, Lalith Rajapakse , Jagath Manatunge, 2004."Growth and morphological adaptations of Eleocharis sphacelata to different water depths and climatic conditions". Proceedings of INTECOL 2004: the 7th International Wetlands Conference, pp. 19, UTRECHT, The Netherlands, 25-30 July 2004.

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Proceedings of Local (in Japan) Symposia

Rajapakse, H. , Inomata, H., & Fukami, K. (2009). Nonpoint Source Pollution Modeling in Yata River Basin, Japan; Process-based approach for assessing excess fertilizer effects and implications for basinwide management. Proceedings of the 12th Annual Conference of the Japan Society on Water Environment (JSWE), pp. 25-26, Tokyo, Japan, 14-15 September 2009.

Hemantha Rajapakse , Hironori Inomata, Kazuhiko Fukami (2009). Diffuse-source Particulate Nitrogen and Phosphorus Pollution Modeling in Yata River Basin in Japan using Process-based WEP model coupled with a Sediment Erosion-transport Model. Proceedings of the JSHWR 2009: Annual Research Session of the Japanese Society of Hydraulics and Water Resources, pp., Kanazawa, Japan, 19-21 August.

Hemantha Rajapakse , Hironori Inomata, Kazuhiko Fukami, Iizumi Yohiko & Tsuyoshi Kinouchi (2008)."The Impact of Nitrogen and Phosphorus Fertilizer Loading on River and Subsurface Water Quality in Yata River Basin, Japan: An Integrated, Basin-wide Modeling Approach". Proceedings of the JSHWR 2008: Annual Research Session of the Japanese Society of Hydraulics and Water Resources, pp. 58-59, Tokyo, Japan, 26-28 August.

Rajapakse, H. L. & Jayawardena, A. W. (2008)."The Role of Dams in Sri Lanka from Ancient Times to the Present", Proceedings of the International Seminar on Role of Dams, Annual Session of the Japan Dam Engineering Centre, pp. 55-60, Tokyo, Japan, April 23, 2008.

Lalith Rajapakse , Takashi Asaeda, Takeshi Fujino & Jagath Manatunge (2005)."Growth and survival strategies of Eleocharis sphacelata in response to different water regimes". Proceedings of the 5th Annual Research Session of Sri Lanka Students' Association in Japan, pp. 18-23, Tokyo, Japan, 04th September 2005.

Lalith Rajapakse , Takashi Asaeda, Takeshi Fujino & Jagath Manatunge (2005)."Adaptations in growth and survival strategies of Eleocharis sphacelata in response to different water regimes", Proceedings of the JSCE 2005 7th International Summer Symposium, pp. 323-326, Tokyo, Japan, 30 July 2005 (Incl. Oral presentation).

Takashi Asaeda, Takeshi Fujino, Lalith Rajapakse , Brian Sanderson & Anna Redden (2005)."The relationship between production of gyttja and Charophytes in an oligotrophic lake and the effects of depth gradient". Proceedings of the 49th Water Engineering Conference, Kokushikan University, Tokyo, Japan, 07-15 March 2005.

Takashi Asaeda, Lalith Rajapakse , Manatunge Jagath & Takeshi Fujino, 2004."Effects of environmental differences on the growth of emergent plants". Proceedings of the 51st Annual Meeting of the Ecological Society of Japan (JES51), Kushihiro, Hokkaido, Japan, 25-29 August 2004.

Lalith Rajapakse , Takashi Asaeda, Jagath Manatunge & Anna Redden, 2004."Contribution of submerged macrophytes in the formation of gyttja and nutrient cycling in Myall Lake, NSW, Australia". Proceedings of the 4th Annual Research Session of Sri Lanka Students' Association in Japan, pp. 22-28, Tokyo, Japan, 17th October 2004 (Incl. Oral presentation).

Rajapakse, L ., Sato, K. & Adachi, K. (1999). "An approach based on telemeter data to mitigate land subsidence during drought seasons in Saitama basin". Proceedings of the 54th Annual Conference of Japanese Society of Civil Engineers, pp. 341-345, 22-26 Sept. 1999, Hiroshima, Japan (Incl. Oral presentation).

Rajapakse, L ., Sato, K. & Adachi, K. (1999). "Groundwater control and mitigation of land subsidence during drought seasons by means of telemeter data transmission system in Saitama, Japan". Proc. of the International Symposium on Groundwater in Environmental Problems, pp. 47-50, 12-14 January 1999, Chiba University, Japan (Incl. Oral presentation).

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Research Journal & Conference Papers (Refreed)

Rajapakse, H., Inomata, H. and Fukami, K. (2010). Diffuse Source Particulate-matter Pollution Modeling in a Semi-Urbanized Agricultural Basin in Japan using Process-based WEP and an Erosion-transport Model. Water Practice & Technology © IWA Publishing 2010 (doi:10.2166/wpt.2010.051)

Asaeda, T., Rajapakse, L. and Kanoh, M. (2009). Fine sediment retention as affected by annual shoot collapse: Sparganium erectum as an ecosystem engineer in a lowland stream. River Research and Applications ( DOI: 10.1002/rra.1322 ).

Asaeda, T. & Rajapakse, L. (2008). Effects of spates of different magnitudes on a Phragmites japonica population on a sandbar of a frequently disturbed river. River Research and Applications 24: 1310-1324.

Asaeda, T., Rajapakse, L. & Fujino, T. (2008). Applications of organ-specific growth models; modeling of resource translocation and the role of emergent aquatic plants in element cycles. Ecological Modeling 215: 170-179.

Asaeda, T., Yamamuro, M., Siong, K., Rajapakse, H. and Sanderson, B. (2008). Nutrient sources for charophytes and Najas marina in Myall Lake, Australia, indicated by carbon and nitrogen stable isotope ratios. In: Managing large lakes of the world: health, integrity and risks (Ed.: Jones, Jack. Red., Faaborg, Janice, Proceedings of the 30th Congress of the International Association of Theoretical and Applied Limnology, 12-18 August 2007, Montreal, Canada). Verhandlungen IVL 30: 401-405.

Asaeda, T., Sharma, P. & Rajapakse, L. (2008). Seasonal patterns of carbohydrate translocation and synthesis of structural carbon components in Typha angustifolia . Hydrobiologia 607: 87-101.

Sanderson, B. G., Asaeda, T., Rajapakse, L. & Redden, A. M. (2008). Mechanisms affecting biomass and distribution of charophytes and Najas marina in Myall Lake, New South Wales, Australia. Hydrobiologia 608: 99-119.

Asaeda, T., Rajapakse, L. & Sanderson, B. (2007). Morphological and reproductive acclimations to growth of two charophyte species in shallow and deep water, Aquatic Botany 86: 393-401.

Rajapakse, L. , Asaeda T., Williams, D., Roberts, J., & Manatunge, J. (2006). Effects of water depth and litter accumulation on morpho-ecological adaptations of Eleocharis sphacelata . Chemistry and Ecology 22: 47-58.

Asaeda, T., Manatunge, J., Rajapakse, L. & Fujino, T. (2006). Growth dynamics and biomass allocation of Eleocharis sphacelata at different water depths: observations, modelling, and applications. Landscape and Ecological Engineering 2: 31-39.

Asaeda, T., Rajapakse, L. , Manatunge, J. & Sahara, N. (2006). The effect of summer harvesting of Phragmites australis on growth characteristics and rhizome resource storage. Hydrobiologia 553: 327-335.

Shilla, D. A., Asaeda, T., Siong K., Rajapakse L. , & Manatunge, J. (2006). Phosphorus concentration in sediment, water and tissues of three submerged macrophytes in Myall Lake, Australia. Wetlands Ecology and Management 14: 549-558.

Asaeda , T., Fujino, T., Rajapakse, L. , Sanderson, B. and Redden, A. (2005). Gyttja production by charophytes and its roles in the interaction with other submerged species in an oligotorphic lake. Japan Society of Civil Engineering (JSCE) Journal of Hydraulic Engineering 49: 1208-1212.

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Theses Submitted

RAJAPAKSE Hemantha Lalith ,"Growth and morphological characteristics of littoral zone sedge species and their adaptations to water depth: A comparative study and implications for river restoration and ecosystem management". A thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at the Graduate School of Science and Engineering, Saitama University, Japan (September 2005).

Rajapakse R. L. H. L. ,"Groundwater Control and Mitigation of Land Subsidence During Drought Seasons by means of Telemeter Data Transmission System in Saitama, Japan". A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering in Civil and Environmental Engineering at the Graduate School of Science and Engineering, Saitama University, Japan (September 1999).

Rajapakse R. L. H. L. , Hapuarachchi, C. L., Weerasekera, I. R. A.,"Buckling of slender piles and lateral reaction of the media". A thesis submitted in partial fulfilment of the requirements for the degree of Bachelor of Science of Engineering in Civil Engineering at University of Moratuwa, Sri Lanka (June 1996).

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Other Academic Achievements

Keynote Lectures, Invited Speeches etc.

Rajapakse, H. L. (2009). National Water Resources Management Policy for Sustainable Economic Development in Sri Lanka; Better Late Than Never. Keynote Lecture delivered at the 9th Annual Research Session of the SLSAJ (Sri Lankan Students' Association in Japan). SLSAJ RS/RJ 2009 at the premises of the Embassy of Sri Lanka in Japan, Tokyo, Japan. (08 November 2009, Tokyo, Japan).

Rajapakse, H. (2009). Modelling for NPS Management: Process based modelling of agricultural nonpoint-source pollution at watershed scale; Application to Yata River Basin in Japan and implications for management. Invited presentation at the International Workshop on Non-point Source Management in Rural Area and Saemangeum Watershed. DIPCON 2009 Special Workshop co-organized by Korea Rural Community Corporation and Korea INWEPF (International Network for Water and Ecosystem in Paddy Fields), Seoul, Korea, 13 October 2009.

Rajapakse, H. (2009). River Basin Management in Japan: Past, Present and Future Directions. Invited Lecture at the Special Session at the World City Water Forum (WCWF) 2009 co-organized by Asian Development Bank/Asia-Pacific Water Forum (APWF) KnowledgeHubs on Basin Water Resources & Water Quality Management at the Launch of Knowledge Hub on Water Quality Management in River Basins (K-water, Korea), Incheon, Korea, 18-21 August 2009.

Rajapakse, H. L. 2008."The Role of Dams in Sri Lanka from Ancient Times to the Present: Historical Development and Changing Perspectives to Serve Diverse Development Needs", Invited Lecture at the International Seminar on Role of Dams, co-organized by Japan Dam Engineering Centre, National Institute of Water Resources Engineering & Water Resources and Environmental Management Centre; held at Japan Dam Engineering Centre, Tokyo on April 23, 2008.

Others

Rajapakse, H. (2009). Session Chair: Session 16-Diffuse Pollution Modelling-1. The 13th International Conference on Diffuse Pollution and Integrated Watershed Management (IWA-DIPCON 2009), Seoul, Korea, 12-15 October 2009.

Rajapakse L. (2008). Session Chair: The 08th Annual Research Session of SLSAJ (Sri Lankan Students' Association in Japan) – RS/RJ 2008. Tokyo, Japan, 06 November 2008.

Rajapakse L. (2006). Session Co-chair: The 06th Annual Research Session of SLSAJ (Sri Lankan Students' Association in Japan) – RS/RJ 2006. Tokyo, Japan, 30 September 2006.

Journal Review and Sub-editorship

•  Assistant to the Subject Editor for international journals, Landscape and Ecological Engineering, Wetlands Ecology and Management, Limnology (2004-2007)

•  Reviewer for the international journals aforementioned and River Research and Applications, Water Science and Technology, Hydrobiologia, Aquatic Botany, Wetlands Ecology and Management, Limnology (2005-to date)

Academic Distinctions, Awards, Scholarships etc.

•  First Class Honours for B.Sc. of Engineering (Civil Engineering) by the University of Moratuwa, Sri Lanka, 1996.

•  Best Civil Engineering Final Year Project Award for the Structural and Construction Engineering by the University of Moratuwa, Sri Lanka, 1996.

•  Postgraduate Scholarship (2 years) to pursue research leading to a Masters degree at Saitama University, Japan by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan, 1997.

•  Postgraduate Scholarship (3 years) to pursue research leading to a PhD degree at Saitama University, Japan by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan, 2002.

•  Postdoctoral Fellowship (2 years) to pursue research at Saitama University, Japan by the Japan Society for the Promotion of Science (JSPS), 2006.

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