Prof. K. D. W. Nandalal

Senior Professor


Office Address:

Department of Civil Engineering,
University of Peradeniya,
Peradeniya,20400,
Sri Lanka.

Email: kdwn@pdn.ac.lk

Telephone: +94-81-2393573


PhD : Wageningen Agricultural University, The Netherlands (1995)

MEng : Asian Institute of Technology, Thailand (1986)

BScEng : University of Peradeniya, Sri Lanka (1981)

Fellow, the Institution of Engineers, Sri Lanka

Member, the Association for the Advancement of Science

Member, the International Association of Hydrological Sciences

International Professional Engineer (SL)

Chartered Engineer

Water Resources Systems Analysis

Flood modeling

Application of Soft Computing Techniques in Water Management

System Dynamics in Water Management

Reservoir Water Quality Modeling

Senior Professor, Civil Engineering University of Peradeniya, Sri Lanka (2014 - To date)

Head, Department of Civil Engineering, University of Peradeniya, Sri Lanka (2009 - 2012)

Professor, Civil Engineering University of Peradeniya, Sri Lanka (2006 - 2014)

Senior Lecturer, Civil Engineering, University of Peradeniya, Sri Lanka (1991 – 2005)

Visiting Scientist, University of Western Ontario, Toronto, Canada (2002 – 2003)

Research Fellow, International Water Management Institute, Sri Lanka (2000)

Director, Engineering Education Unit, Faculty of Engineering, University of Peradeniya, Sri Lanka (1996 – 2000)

Consulting Engineer, Central Engineering Consultancy Bureau, Sri Lanka (1981-1985, 1987-1990)

Visiting Scientist, Institute of Catastrophic Loss Reduction, The University of Western Ontario, Canada

Fellow of the Institution of Engineers, Sri Lanka

Member of the Sri Lanka Association for the Advancement of Science

Member of the International Association of Hydrological Science

JOURNALS :

Nandalal, K.D.W (2009) “Use of a hydrodynamic model to forecast floods of Kalu River in Sri Lanka”, Journal of Flood Risk Management, Vol.2, Issue 3, pp 151-158.

Nandalal, K.D.W. and J.J. Bogardi (2007) “Dynamic Programming Based Reservoir Operation: Applicability and Limits,” Cambridge University Press, UK, pp.130, ISBN 978-0-521-87408-3.

Nandalal, K.D.W. and K.W. Hipel (2007) “Strategic Decision Support for Resolving Conflict over Water Sharing along the Syr Darya River in the Aral Sea Basin”, Journal of Water Resources Planning and Management, ASCE, Vol.133, Issue 4, pp.289-299.

Rajasekaram, V. and K.D.W. Nandalal (2005) “Decision Support System for Reservoir Water Management Conflict Resolution”, Journal of Water Resources Planning and Management, ASCE, Vol.131, Issue 6, pp.410-419.

Abeysinghe, K.G.A.M.C.S., Nandalal, K.D.W. and S. Piyasiri (2005) “Prediction of thermal stratification of the Kotmale reservoir using a hydrodynamic model”, Journal of the National Science Foundation of Sri Lanka, Vol.33, No.1, pp.25-36.

Nandalal, K.D.W. and S.P. Simonovic (2003) “Resolving conflicts in water sharing: A systemic approach,” Water Resources Research, 39(12):1362

Rajasekaram, V., Simonovic, S.P. and K.D.W. Nandalal, (2003) “Computer Support for Implementation of a Systematic Approach for Water Conflict Resolution,” Water International, Vol.28, No.4, pp.454-466.

Nandalal, K.D.W. and R.Sakthivadivel (2003) “Availability, Use and Productivity of Water in Walawe River Basin”, Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol.XXXVI, July, No.3, pp.30-38.

Nandalal, K.D.W. (2002) “Optimal Operational Rules for Reservoirs: Use of Stochastic Dynamic Programming and Genetic Algorithms", Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol.XXXV, September, No.3, pp.17-23.

Nandalal, K.D.W. and R.Sakthivadivel (2002) “Planning and management of a complex water resources system: case study of Samanalawewa and Udawalawe reservoirs in the Walawe river, Sri Lanka”, Agricultural Water Management, Vol.57, Issue.3, pp.207-221.

Nandalal, K.D.W. and S.P. Simonovic (2002), "State-of-the-Art Report on Systems Analysis Methods for Resolution of Conflicts in Water Resources Management", UNESCO-IHP-VI, PCCP Series No.4, UNESCO, Paris, France, pp.127.

Nandalal, K.D.W. and S.P. Simonovic (2002), "Conflict Resolution Support System: A Software for the Resolution of Conflicts in Water Resource Management ", e-Book containing the software and the manual, Division of Water Sciences, UNESCO, Paris, France.

Nandalal, K.D.W. and J.J. Bogardi (1995) "Optimal Operation of a Reservoir for Quality Control Using Inflows and Outflows", Water Science and Technology, Vol.31, No.8, pp.273-280.

Nandalal, K.D.W. and H.K. Ampitiya (1997) "The Assessment of Long-Term Operation of Multi-Unit Reservoir Systems", Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol XXVI, December, No.2, pp.16-24.

Nandalal, K.D.W. and R.Sakthivadivel (2002) “Planning and management of a complex water resources system: case study of Samanalawewa and Udawalawe reservoirs in the Walawe river, Sri Lanka”, Agricultural Water Management, Vol.57, Issue.3, pp.207-221.

Nandalal, K.D.W. (2002) “Optimal Operational Rules for Reservoirs: Use of Stochastic Dynamic Programming and Genetic Algorithms", Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol.XXXV, September, No.3, pp.17-23.

Nandalal, K.D.W. and S.P. Simonovic (2003) “Resolving conflicts in water sharing: A systemic approach,” Water Resources Research, 39(12):1362

Rajasekaram, V., Simonovic, S.P. and K.D.W. Nandalal, (2003) “Computer Support for Implementation of a Systematic Approach for Water Conflict Resolution,” Water International, Vol.28, No.4, pp.454-466.

Nandalal, K.D.W. and R.Sakthivadivel (2003) “Availability, Use and Productivity of Water in Walawe River Basin”, Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol.XXXVI, July, No.3, pp.30-38.

Abeysinghe, K.G.A.M.C.S., Nandalal, K.D.W. and S. Piyasiri (2005) “Prediction of thermal stratification of the Kotmale reservoir using a hydrodynamic model”, Journal of the National Science Foundation of Sri Lanka, Vol.33, No.1, pp.25-36.

Rajasekaram, V. and K.D.W. Nandalal (2005) “Decision Support System for Reservoir Water Management Conflict Resolution”, Journal of Water Resources Planning and Management, ASCE, Vol.131, Issue 6, pp.410-419.

Nandalal, K.D.W. and K.W. Hipel (2007) “Strategic Decision Support for Resolving Conflict over Water Sharing along the Syr Darya River in the Aral Sea Basin”, Journal of Water Resources Planning and Management, ASCE, Vol.133, Issue 4, pp.289-299.

Nandalal, K.D.W. (2009) “Use of a hydrodynamic model to forecast floods of Kalu River in Sri Lanka”, Journal of Flood Risk Management, Vol.2, Issue 3, pp 151-158.

Nandalal, K.D.W., Piyasiri, S. and K.G.A.M.C.S. Abeysinghe (2010) “Forecasting Thermal Stratification of the Victoria Reservoir using a Hydrodynamic Model”, Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol.XXXXIII, July, No.3, pp.26-37.

Nandalal, K.D.W., Sachindra, D.A. and U.R. Ratnayake (2012) “Application of WRF weather model to forecast precipitation in Nilwala river basin”, Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol.XXXXV, January, No.1, pp.51-64.

Abira, G and K.D.W. Nandalal (2014) “Strategic Decision Support for resolving conflict existing in Per Aru basin located in Vavuniya district”, Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol.XLVII, July, No.3, pp.61-70.

Kanchanamala, D.P.H.M.,Herath, H.M.H.K. and K.D.W. Nandalal (2016) “Impact of Catchment Scale on Rainfall Runoff Modeling: Kalu Ganga RiverCatchment uptoRatnapura”,Engineer, Journal of the Institution of Engineers, Sri Lanka, Vol.XLIX, April, No.2, pp.1-7.


Books and Reports:

Nandalal K.D.W. (1986) "Operational Policies for Two Multipurpose Reservoirs of the Mahaweli Development Scheme in Sri Lanka", Master Thesis, Division of Water Resources Engineering, Asian Institute of Technology, Thailand.

He, Q., Nandalal, K.D.W., Bogardi, J.J. and D. Milutin (1995) "Application of stochastic dynamic programming models in optimization of reservoir operations: a study of algorithmic aspects", Report 56, Internal Publication Series, Department of Water Resources, Wageningen Agricultural University, The Netherlands, pp.135.

Nandalal, K.D.W. (1995) "Reservoir Management Under Consideration of Stratification and Hydraulic Phenomena", PhD Dissertation, Department of Water Resources, Wageningen Agricultural University, The Netherlands.

Bogardi, J.J., Brorens, B.A.H.V., Kularathna, M.D.U.P., Milutin, D. and K.D.W. Nandalal (1995) "Long-term Assessment of a Multi-unit Reservoir System Operation: The ShellDP Program Package Manual", Report 59, Internal Publication Series, Department of Water Resources, Wageningen Agricultural University, The Netherlands, pp.252.

Nandalal, K.D.W. and S.P. Simonovic (2002), "State-of-the-Art Report on Systems Analysis Methods for Resolution of Conflicts in Water Resources Management", UNESCO-IHP-VI, PCCP Series No.4, UNESCO, Paris, France, pp.127.

Nandalal, K.D.W. and S.P. Simonovic (2002), "Conflict Resolution Support System: A Software for the Resolution of Conflicts in Water Resource Management ", e-Book containing the software and the manual, Division of Water Sciences, UNESCO, Paris, France.

Nandalal, K. D. W. (2001) “A study on the impact of water resources development works along Walawe River on lagoons in the basin”, Unpublished Report, funded by IWMI, and carried out at the University of Peradeniya, Department of Civil Engineering, 15p.

Nandalal, K.D.W. and J.J. Bogardi (2007) “Dynamic Programming Based Reservoir Operation: Applicability and Limits,” Cambridge University Press, UK, pp.130, ISBN 978-0-521-87408-3.

Nandalal, K.D.W. (Chief Editor) (2007) Proceedings, “Peradeniya University Research Sessions -2007, Volume 12 – Part I, Agricultural, Biological and Medical Sciences,” University of Peradeniya, Sri Lanka.

Nandalal, K.D.W. (Chief Editor) (2007) Proceedings, “Peradeniya University Research Sessions -2007, Volume 12 – Part II, Engineering, Physical Sciences, Humanities and Social Sciences,” University of Peradeniya, Sri Lanka.

Nandalal, K.D.W. (Chief Editor) (2015) Proceedings, “Peradeniya University International Research Sessions -2015, Volume 19,” University of Peradeniya, Sri Lanka, pp.485, ISBN 978-955-589-201-8.


Conferences:

Bogardi, J.J. and K.D.W. Nandalal (1988) "Dynamic Programming Based Joint Operation Policy for the Victoria and Randenigala Reservoirs in Sri Lanka", Proceedings, VIth IWRA World Congress on Water Resources, Vol.II, Ottawa, Canada, pp.703-712.

Bogardi, J.J., Budhakooncharoen S., Shrestha D.L. and K.D.W. Nandalal (1988) "Effect of State Space and Inflow Discretization on Stochastic Dynamic Programming Based Reservoir Operation Rules and System Performance", Proceedings, VIth Congress of the Asian and Pacific Regional Division of the International Association for Hydraulic Research, Kyoto, Japan, Vol.1, pp.429-436.

Bogardi, J.J., Budhakooncharoen S. and K.D.W. Nandalal (1989) "Deterministic Dynamic Programming and its Application to Reservoir Management", Proceedings, Seminar Workshop on Conflict Analysis in Reservoir Management, Water Resources Engineering Division and the Continuing Education Centre, Asian Institute of Technology, Thailand, pp.59-108.

Nandalal, K.D.W. and J.J. Bogardi (1993) "Optimal Management of Stratified Reservoirs", Proceedings, International Conference on Environmentally Sound Water Resources Utilization, Bangkok, Thailand, pp.II-266 - II-279.

Bogardi, J.J, Milutin, D. and K.D.W. Nandalal (1994) "Reliability Criteria to Assess Reservoir Operational Performance", Proceedings, International UNESCO Symposium: Water Resources Planning in a Changing World, Karlsruhe, Germany, pp.II-141 - II-150.

Nandalal, K.D.W. and J.J. Bogardi (1994) "Reservoir Management for Quality Control", Proceedings, 9th Congress of the Asian and Pacific Division of the International Association for Hydraulic Research, Singapore, pp.341-348.

Nandalal, K.D.W. and J.J. Bogardi (1994) "Optimum Reservoir Operation for Quality Control", Integrated River Basin Development, (Ed., Celia Kirby, W.R.White), Proceedings, International Conference on Integrated River Basin Development, Wallingford, England, pp.85-95.

Nandalal, K.D.W. and J.J. Bogardi (1994) "Optimal Operation of a Reservoir for Quality Control using Inflows and Outflows", Proceedings, International Conference on Integrated Water Resources Management: Living with Water, Amsterdam, The Netherlands, pp.375-385.

Nandalal, K.D.W. and J.J. Bogardi (1995) "Reservoir management for improving river water quality", Water Resources Management under Drought or Water Shortage Conditions, (Ed., N.X.Tsiourtis), Proceedings, EWRA95 Symposium, Cyprus, pp.257-264.

Nandalal, K.D.W. and J.J. Bogardi (1995) "An Iterative Technique for Optimal Management of a Stratified Reservoir", in Modeling and Management of Sustainable Basin-Scale Water Resources Systems, IAHS Publication No.231, Proceedings of the International Union of Geodesy and Geophysics - XXI General Assembly, 1995, Colorado, USA, pp.189-196.

Nandalal, K.D.W. and J.J. Bogardi (1995) "Management of a Reservoir Including Salinity Effects", AnnalesGeophysicae, Part II, XX Assembly of European Geophysical Society, Hamburg, Germany, pp.C 462.

Milutin, D., Bogardi, J.J. and K.D.W. Nandalal (1995) "An Approach to Long-term Operational Assessment of Multiple-Reservoir Systems", Proceedings, International Conference on Water Resources Management in Arid Countries, Oman, pp.707-710.

Nandalal, K.D.W. and J.J. Bogardi (1995) "Reservoirs for Salinity Control", Proceedings, International Symposium on Hydrological Research and Water Resources Management Strategies in Arid and Semi-arid Zones, Tashkent, Uzbekistan, September.

Milutin, D., Bogardi, J.J. and K.D.W. Nandalal (1996) An approach to long term operational assessment of multiple reservoir systems. Proc. Int. conf on water resources management in arid countries, Muscat, Sultanate of Oman pp.707-710.

Nandalal, K.D.W. and J.J. Bogardi (1996) "Multiobjective Considerations in Satisfying Quantity and Quality Requirements: Operation of a Reservoir with Inflow Diversion Facility", Proceedings, Fifth Water Resources Operations Management Workshop, ASCE, Washington, USA, pp.261-265.

Nandalal, K.D.W. and J.J. Bogardi (1996) "Can Reservoirs Improve Water Quality", Proceedings, International Conference on Aspects of Conflicts in Reservoir Development and Management, City University, London, UK, pp.539-548.

Ampitiya, H.K., J.J. Bogardi and K.D.W. Nandalal (1996) "Derivation of Optimal Operation Policies for the Reservoirs of the Complex Mahaweli Water Resources Scheme in Sri Lanka via a Stochastic Dynamic Programming Based Approach", Proceedings, International Conference on Aspects of Conflicts in Reservoir Development and Management, City University, London, UK, pp.539-548.

Nandalal, K.D.W. and J.J. Bogardi (1996) "Reliability Analysis of a Reservoir for Salinity Control", Proceedings, International Conference on Water Resources & Environment Research: Towards the 21st Century, Kyoto University, Japan, pp.263-269.

Nandalal, K.D.W. and J.J. Bogardi (1997) "Reservoir Operation for Quality Control: Coupling Reservoir Stratification with Optimization Techniques", Proceedings, International Conference on Water Management, Salinity and Pollution towards Sustainable Irrigation in the Mediterranean Region, Volume III, Water Resources and Irrigation Management, Bari, Italy, pp.283-297.

Nandalal, K.D.W. (1998) "Effects of Development Works on River Water Quality: The Mahaweli Development Scheme in Sri Lanka", Poster, International Symposium on "Hydrology in a Changing Environment", July, Exeter, UK.

Nandalal, K.D.W. (1998) "Use of Optimizaion Techniques in Planning and Management of Complex Water Resources Systems", Status and Future Direction of Water Research in Sri Lanka, (Ed. M.Samad, N.T.S.Wijesekera, A.Birch), Proceedings, National Conference on Status and Future Direction of Water Research in Sri Lanka, Colombo, Sri Lanka, pp.119-129.

Nandalal, K.D.W. and U.R.Rathnayake (1998) "Optimum Water Allocation in a Diversion Type Irrigation Scheme: GampolawelaRajaela Diversion Scheme", Status and Future Direction of Water Research in Sri Lanka, (Ed. M.Samad, N.T.S.Wijesekera, A.Birch), Proceedings, National Conference on Status and Future Direction of Water Research in Sri Lanka, Colombo, Sri Lanka, p.230.

Ampitiya, H.K and K.D.W.Nandalal (1998) "Assessing Operational Performances of the Reservoirs in the Mahaweli Development Scheme in Sri Lanka based on Reliability Criteria", Proceedings, Annual Sessions, 1997/98 of the Institution of Engineers, Sri Lanka, Central Province Centre, pp.29-37.

U.R.Rathnayake and K.D.W. Nandalal (1998) "An Approach for Irrigation Scheduling in an Irrigation System", Poster Paper, Proceedings, Annual Research Sessions 1998 of the University of Peradeniya, Sri Lanka, p.114.

Jayarathna, M.P.R., Jayasekera, D.N.B. and K.D.W.Nandalal (1998) "An Investigation on the Impacts of Influent Water Quality on the Kandy Lake", Proceedings, 54th Annual Sessions of the Sri Lanka Association for the Advancement of Science, Colombo, Sri Lanka, p168.

Nandalal, K.D.W. (1998) "Analysis of water quality variation along a regulated stream in Sri Lanka", Environmental Hydraulics, (Ed. J.H.W.Lee, A.W.Jayawardena, Z.Y.Wang), Proceedings, Second International Symposium on Environmental Hydraulics, Hong Kong, China, pp.603-608.

Nandalal, K.D.W. and J.J.Bogardi (1999) "Importance of Reservoir System Operation as part of Environmental Impact Assessment: A Case Study on the Lesotho Highlands Water Project in Lesotho", Proceedings, Water 99 Joint Congress, Brisbane, Australia, pp.191-196.

K.D.W. Nandalal and U.R.Rathnayake (1999) "Model for Optimum Scheduling of Water Distribution in Udawalawe Irrigation Scheme", Proceedings, Annual Research Sessions 1999 of the University of Peradeniya, Sri Lanka, p.81.

Nandalal, K.D.W. (1999) "Impact of Reservoir Operations on Water Quality Along a Regulated Stream in Sri Lanka", Proceedings, Regional Seminar on Conflict Management of International River Basins, Dhaka, Bangladesh, pp.97-104.

Nandalal, K.D.W. (2000) "Water quality improvements by reservoir operation", in New Trends in Water and Environmental Engineering for Safety and Life, (Ed., .Maione, MajoneLetho and Monti), Balkema, Rotterdam, ISBN 90 5809 138 4.

Nandalal, K.D.W. and J.J.Bogardi (2000) "Use of reservoir operational analysis in reducing impacts of water resources systems upon environment", in New Trends in Water and Environmental Engineering for Safety and Life, (Ed., Maione, MajoneLetho and Monti), Balkema, Rotterdam, ISBN 90 5809 138 4.

Fernando, W.L.S.B., Galapathage,S., Gunasena, M.A.S.S. and K.D.W. Nandalal (2000) “A comparison on rainfall averaging methods”,Proceedings, 56th Annual Sessions of the Sri Lanka Association for the Advancement of Science, Colombo, Sri Lanka.

Nandalal, K.D.W. and U.R. Ratnayake (2001) "Hydropower Potential of Nalanda Reservoir", Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.6, p.180.

Nandalal, K.D.W. (2002) “An Application of Genetic Algorithms in Optimal Reservoir Operation”, Hydroinformatics 2002: Proceedings of the Fifth International Conference on Hydroinformatics, Cardiff, UK, Volume II: Software Tools and Management Systems (Eds. I.D. Cluckie, D. Han, J.P. Davis and S. Heslop), 1453 - 1458.

Nandalal, K.D.W. (2002) “Conflicts facing the Proposed Water Resources Policy of Sri Lanka”, Proceedings of the International Conference "From Conflict to Co-operation in International Water Resources Management: Challenges and Opportunities", (Eds. J. Bogardi and S. Castelein), UNESCO, Delft, The Netherlands, pp.438-359.

Rajasekaram, V., Nandalal, K.D.W. and S.P. Simonovic (2002), "A Conflict Resolution Support System for Use in Water Resources Management", Proceedings of the International Conference "From Conflict to Co-operation in International Water Resources Management: Challenges and Opportunities", (Eds. J. Bogardi and S. Castelein), UNESCO, Delft, The Netherlands, pp.204-212.

Hunukumbura, J.M.P.B., Sendanayaka, M.S., WasanthaLal, M.A. and K.D.W.Nandalal (2002) “Impact of drainage water from Walawe irrigation area on lagoons in the basin”, Proceedings, 58th Annual Sessions of the Sri Lanka Association for the Advancement of Science, Colombo, Sri Lanka, p115.

Abeysinghe, K.G.A.M.C.S., Nandalal, K.D.W. and S. Piyasiri (2002) “A study on thermal stratification of Kotmale Reservoir in Sri Lanka”, Proceedings, 58th Annual Sessions of the Sri Lanka Association for the Advancement of Science, Colombo, Sri Lanka, p145.

Senadeera, K.P.G.W., Piyasiri, S., Nandalal, K.D.W. and S. N. De Silva (2002) “Evaluation of factors contributing to high conductivity values in TalatuOya, KiwiliyaddaOya, &KapuliyaddaOya in the catchment of Victoriya reservoir using Geograpic Information System (GIS) as a tool”, Proceedings, 58th Annual Sessions of the Sri Lanka Association for the Advancement of Science, Colombo, Sri Lanka, p155.

Nandalal, K.D.W. (2003), "Systemic approach based computer support in resolution of conflicts in water resource management ", Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.8, p.80.

Rajasekaram, V. and K.D.W. Nandalal (2003) “Distributed Watershed Modeling using Object Oriented Programming”, Proceedings of the16th Canadian Hydrotechnical Conference of the CSCE, Burlington, Ontario, Canada.

Abeysinghe, K.G.A.M.C.S., Nandalal, K.D.W. and S. Piyasiri (2003) “A study on thermal stratification of Victoria Reservoir in Sri Lanka using DYRESM model”, Proceedings, 59th Annual Sessions of the Sri Lanka Association for the Advancement of Science, Colombo, Sri Lanka, p177.

Rajasekaram, V. and K.D.W. Nandalal (2004) “System Dynamics-based decision model for water management in Walawe basin, Sri Lanka”, Proceedings of the International Conference on Sustainable Water Resources Management in the Changing Environment of the Monsoon Region, Vol.II, Colombo, Sri Lanka, pp.575-582.

Nandalal, K.D.W. and N.S.Wickramaratna (2004) “Water Management in Walawe Basin using System Dynamics Simulation Modeling”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.9, p.89.

Nandalal, K.D.W. and K.G.A.M.C.S. Abeysinghe (2004) “Water Quality Modeling in Kotmale Reservoir”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.9, p.92.

Abeysinghe, K.G.A.M.C.S., Nandalal, K.D.W. and S. Piyasiri (2004) “Simulation of water temperature and dissolved oxygen distribution of Kotmale Reservoir in Sri Lanka”, Proceedings, 60th Annual Sessions of the Sri Lanka Association for the Advancement of Science, Colombo, Sri Lanka, p164.

Nandalal, K.D.W. (2005) “Objected-Oriented Programming in Streamflow Prediction: Flow of Kaluganga River in Sri Lanka”, Proceedings of the International Conference on Monitoring, Prediction and Mitigation of Water-Related Disasters, Eds.K.Takara, Y.Tachikawa and NMNS BandaraNawarathna, Kyoto, Japan, pp.79-84

Nandalal, K.D.W. (2005) “Environmentally conscious operation of a hydropower scheme using system dynamics approach”, Proceedings of the International Conference “Hydropower’05”, Stavanger, Norway, ISBN-82-92706-00-3.

Nandalal, K.D.W., Abeysinghe, K.G.A.M.C.S. and S. Piyasiri (2005) “Improvement of Water Quality in a Reservoir: Case of Kotmale Reservoir in Sri Lanka”, Abstracts Volume, 11th World Lakes Conference, Nairobi, Kenya, p.26.

Nandalal, K.D.W. (2005) “Water Accounting for Menik Ganga Basin”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.10, p.86.

Nandalal, K.D.W. and S.B.A.D. Semasinghe (2005) “Assessment of Water Resources: A System Dynamics Approach”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.10, p.89.

Nandalal, K.D.W. and S.B.A.D. Semasinghe (2006) “A system dynamics simulation model for the assessment of water resources in Sri Lanka,” Proceedings of the 32nd WEDC Conference “Sustainable Development of Water Resources, Water Supply and Environmental Sanitation,” Colombo, Sri Lanka, pp.243-246.

Nandalal, K.D.W. (2006) “Predicting water availability in Sri Lanka,” Proceedings of the International Conference “Water in the Humid Tropics,” Kandy, Sri Lanka, pp.19-23.

Rathnayake, U., Weerakoon, S.B., Nandalal, K.D.W. and U. Rathnayake (2007) “Flood Modelling in the Mahaweli River Reach from Kotmale to Polgolla,” Proceedings and Abstracts of the International Conference on Mitigation of The Risk of Natural Hazards, Kandy, Sri Lanka, p.18.

Basnayake, B.M.L.A., Dias, D.D., Gamage, G.S.W. and K.D.W. Nandalal (2007) “Development of a Flood Forecasting System for Kalutara in Sri Lanka,” Proceedings and Abstracts of the International Conference on Mitigation of The Risk of Natural Hazards, Kandy, Sri Lanka, p.19.

Nandalal, K.D.W. (2007) “Impacts of Concern and Awareness in Disaster Preparedness: A Systemic View,” Proceedings and Abstracts of the International Conference on Mitigation of The Risk of Natural Hazards, Kandy, Sri Lanka, p.72.

Senadeera, K.P.G.W., Piyasiri, S. and K.D.W. Nandalal (2007) “The evaluation of Morphometric Characteristics of Kotmale Reservoir catchment using GIS as a tool, Sri Lanka”, 5th International Symposium “Spatial data Quality 2007”, ITC, Enschede, The Netherlands, 13-15 June. http://www.itc.nl/ISSDQ2007/proceedings/

Nandalal, K.D.W. (2007) “Planning a Hydropower Project Considering Environmental Impacts: A System Dynamics Approach,” Proceedings of the 10th International Riversymposium and Environmental Flows Conference, Brisbane, Australia, p.79.

Basnayake, B.M.L.A., Dias, D.D. and K.D.W. Nandalal (2007) “Use of a hydrodynamic model to predict Kalu Ganga Floods,” Proceedings, 63rd Annual Sessions of the Sri Lanka Association for the Advancement of Science, Part 1-Abstracts, Colombo, Sri Lanka, pp.53-54.

Weerakoon, W.M.D.G., Karunarathna, B.G.I.A., Chandraratna, D.K.A.I.K. and K.D.W. Nandalal (2007) “Impacts of reduced diversions on the Upper Kotmale Project,” Proceedings, 63rd Annual Sessions of the Sri Lanka Association for the Advancement of Science, Part 1-Abstracts, Colombo, Sri Lanka, p.55.

Nandalal, K.D.W. (2007) "Computer Support for Allocation of a Shared Water Resource ", Proceedings, 2006/2007 Annual Sessions of the Institution of Engineers, Sri Lanka, Central Province Centre, pp.22-34.

Nandalal, K.D.W. (2008) “Use of a Hydrodynamic Model to Forecast Floods of Kalu River in Sri Lanka”, Proceedings, 4th International Symposium on Flood Defence: Managing Flood Risk, Reliability and Vulnerability, Toronto, Ontario, Canada, pp. 5-1 – 5-8.

Nandalal, K.D.W. (2008) “Computer support in resolution of conflicts in water management”, Geophysical Research Abstracts, EGU General Assembly 2008, EUG 2008-A-00376, Austria,

Nandalal, K.D.W. (2008) “Assessment of Sri Lanka’s Water Resources at District Level based on System Dynamics Approach”, Proceedings of the Third South Asia Research Conference “Innovative Modeling Approaches for IWRM”, Dhaka, Bangladesh, pp.61-69.

Nandalal, K.D.W. (2008) “Impact of Gem Mining on a River in Sri Lanka,” Proceedings of the 11th International Riversymposium, Brisbane, Australia, p.21.

Nandalal, K.D.W. (2008) “Water Related Research: Present Status and Future Directions,” Proceedings of the International Exchange Symposium on “Sustainable Infrastructure Development in Asia” Peradeniya, Sri Lanka, pp.74-79.

kkao,d,a“ fla‘ã‘ví‘ ^2008& §c, .e,S陸 iajNdúlwdmod l

Sachindra, D.A., Nandalal, K.D.W. and U.R. Ratnayake (2008) “Use of spatially distributed and lumped rainfalls in rainfall-runoff modelling”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.13, Part I, pp.154-157.

Weerasekaralage, L.S.S.K. and K.D.W. Nandalal (2009) “Sustainable Flood Mitigation through a Local Approach: A Case Study at Kirindiwita in Gampaha District”, Abstracts of the National Symposium on “Promoting Knowledge Transfer to Strengthen Disaster Risk Reduction and Climate Change Adaptation”, Colombo, Sri Lanka, p.58.

Nandalal, K.D.W. (2009) “System Dynamics Simulation Model for Effective Water Resources Utilization: Walawe Basin in Sri Lanka”, Abstracts of the First National Symposium on Natural Resources Management - NRM 2009 “Sustainable Utilization of Natural Resources for National Development”, Sabaragamuwa University, Sri Lanka, p.35.

Sachindra, D.A., Nandalal, K.D.W. and U.R. Ratnayake (2009) “Impact of cumulus parameterization schemes on precipitation forecasting in WRF weather model: Application to Nilwala river basin in Sri Lanka”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.14, Part II, pp.489-491.

Sachindra, D.A., Nandalal, K.D.W. and U.R Ratnayake (2009) “Impact of land surface models on precipitation forecasting in WRF weather model: Application to Nilwala river basin in Sri Lanka”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.14, Part II, pp.492-494.

Nandalal, K.D.W. (2010) “Groundwater Resources”, Proceedings of the National Forum on Water Research: Identification of Gaps and Priorities, National Science Foundation, Sri Lanka, pp.99-117.

Nandalal, K.D.W., Weerasekaralage, L.S.S.K. and R.K. Wettasinghe (2010) “Impact of Climate Change on Socio-Economic Conditions in South Asia”, Abstracts of the Second National Symposium on “Disaster Risk Reduction and Climate Change Adaptation”, Colombo, Sri Lanka, p.51.

Hewavitharana, H.A.N.S., Perera, K. and K.D.W. Nandalal (2010) “A non-linear statistical model for Kalu river daily stream flow prediction”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.15, Part II, pp.682-684.

Jayaweera, P.S., Nandalal, K.D.W. and U.R Ratnayake (2010) “Generation of floods based on a hydrologic model”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.15, Part II, pp.730-732.

Hewavitharana, H.A.N.S., Perera, K. and K.D.W. Nandalal (2010) “Non-linear statistical model for the daily stream flow prediction in the Kalu river catchment in Sri Lanka”, Proceedings of the International Conference on Sustainable Built Environments, Kandy, Sri Lanka, pp.117-123.

Ratnayake , U.R., Sachindra, D.A. and K.D.W. Nandalal (2010) “Rainfall forecasting for flood prediction in the Nilwala basin”, Proceedings of the International Conference on Sustainable Built Environments, Kandy, Sri Lanka, pp.355-362.

Nandalal, K.D.W. and H. Aberuwan (2010) “An attempt towards wind zone demarcation for Sri Lanka”, Proceedings of the 6th Workshop on Regional Harmonization of Wind Loading and Wind Environmental Specifications in Asia-Pacific Economies, South Korea, pp.208-213.

Ratnayake, U.R., Sachindra, D.A. and K.D.W. Nandalal (2010) “Development of a Flood Prediction Method for the Nilwala Watershed in Sri Lanka”, Proceedings of the International Symposium on Coastal Zones and Climate Change: Assessing the Impacts and Developing Adaptation Strategies, Monash University, Australia, pp.43-53.

Jayaweera, P.S., Nandalal, K.D.W. and U.R Ratnayake (2011) “GIS Model for Flood Risk Mapping”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.16, p.14.

Nandalal, K.D.W. (2013) “Impact of Climate Change on Sri Lanka’s Water Resources based on System Dynamics Approach”, Proceedings of the GWSP international conference 'Water in the Anthropocene: Challenges for Science and Governance', Bonn, Germany, pp.61-62.

Nandalal, K.D.W., Jayaweera, P.S. (2013) “Impact of vulnerability on flood risk: Nilwala river basin in Sri Lanka”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.17, p.60.

Pushpakumara, P.K.P.,Weerakoon, S.B. and K.D.W. Nandalal(2013) “Development of a Hydrodynamic Model for Negombo Lagoon”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.17, p.65.

Pushpakumara, P.K.P.,Weerakoon, S.B.,Nandalal, K.D.W. and R. Ranasinghe(2013) “Analysis of Sea Level Rise Impacts onNegombo Lagoon Hydrodynamics”, Proceedings of the Asia Congress of Fluid Mechanics – 14ACFM, Hanoi and Halong, Vietnam, pp.646-650.

Pushpakumara, P.K.P.,Nandalal, K.D.W. and S.B. Weerakoon(2013) “Impacts of Climate Change on the Salinity Distribution in the Negombo Lagoon”, Symposium Proceedings of The Water Professionals Day, Peradeniya, Sri Lanka, pp.63-71.

Pushpakumara, P.K.P.,Weerakoon, S.B. and K.D.W. Nandalal(2013) “Impacts of sea level rise on the salinity level in the Negombo lagoon”, Proceedings, 69thAnnual Sessions of the Sri Lanka Association for the Advancement of Science, Part 1-Abstracts, Colombo, Sri Lanka, p.64.

Lakmal, A.G.P.N., Kumarasiri, H.K.S., Sampath, W.M.D.C. and K.D.W. Nandalal (2013) “Integrated urban water supply by using optimum divrsion of Kalu river towards southern Sri Lanka”, Proceedings of the 4th International Conference on Structural Engineering and Construction Management, Vol.1, Kandy, Sri Lanka, pp.46-49.

Dilini, W.M.N., Lyanage-Hansen, L, Attygalle, M.T.D. and K.D.W. Nandalal (2013) “Effective water management in the Mahaweli reservoir system; Analyzing the inflow of the upmost reservoir”, Proceedings, International Symposium for Next Generation Infrastructure”, Wollongong, Australia, pp.1 6.

Kumarasiri, H.K.S., Lakmal, A.G.P.N, Sampath, W.M.D.C. and K.D.W. Nandalal (2014) “Planning for Diversion of Kalu Ganga River to Southern Sri Lanka”, Proceedings of the Civil Engineering Project Symposium, CEPS 2013, Peradeniya, Sri Lanka, pp.13-14.

Pushpakumara, P.K.P.,Weerakoon, S.B.,Nandalal, K.D.W. and R. Ranasinghe(2014) “Sea Level Rise on Residence Time of Negombo Lagoon, Sri Lanka”, Proceedings of the International Symposium on Impact of Climate Change on the Coastal Zone, Moratuwa, Sri Lank, pp.20-23.

Nandalal, K.D.W. (2014) “System Dynamics based model for conjunctive management of water; Jaffna Peninsula in Sri Lanka”, Proceedings of the GWSP international conference 'Sustainability in the Water-Energy-Food Nexus', Bonn, Germany, pp.86-87.

Senadeera, K.P.G.W., Piyasiri, S. and K.D.W. Nandalal (2014) “Evaluation of morphometric characteristics of Randenigala reservoir catchment using GIS as a tool, Sri Lanka”, Proceedings of the International Conference on Multidisciplinary Approaches: Harnessing Knowledge and Harmonizing Diversities, Nugegoda, Sri Lanka, p.103.

Senanayake, I., Piyasiri, S., Nandalal, K.D.W., Chandrajith, R. and K. Ranatunga (2014) “Cadmium and Arsenic distribution in shallow anddeep groundwater resources of Medawachchiya and Huruluwewa areas in Sri Lanka”, Proceedings of the International Conference on Multidisciplinary Approaches: Harnessing Knowledge and Harmonizing Diversities, Nugegoda, Sri Lanka, p.126.

Chandrasekera, D., Karunanayake, M.M., Piyasiri, S., Ranatunga, K. and K.D.W. Nandalal (2014) “Strategic Environment Assessment (SEA) for enabling sustainable development in post-conflict settings: A case study on Killinochchi District of Sri Lanka”, Proceedings of the International Conference on Multidisciplinary Approaches: Harnessing Knowledge and Harmonizing Diversities, Nugegoda, Sri Lanka, p.137.

Senadeera, K.P.G.W., Piyasiri, S. Nandalal, K.D.W., Chandrajith, R. and K. Ranatunga (2014) “Cadmium and Arsenic contamination in groundwater at Girandurukotte and Nagadeepa in Badulla District, Sri Lanka”, Proceedings of the International Conference on Multidisciplinary Approaches: Harnessing Knowledge and Harmonizing Diversities, Nugegoda, Sri Lanka, p.138.

Nandalal, K.D.W. (2015) “Water, Energy and Food Nexus and Sustainability”, Keynote Address, Proceedings of the 5th International Research Symposium on Engineering Advancements - 2015, Colombo, Sri Lanka, p.2.

Thilakarathna, H.W.R.B., Wickramarathna, R.D.R., Wijenayaka, I.M.S.M. and K.D.W. Nandalal (2015) “The Feasibility for diverting a part of Gin Ganga river water to Hambantota area”, Proceedings of the Civil Engineering Project Symposium, CEPS 2014, Peradeniya, Sri Lanka, pp.4-5.

Jayathilaka, R.M.C.P., Rathnayake, R.M.C.E.M., Sajihan, J.A.M. and K.D.W. Nandalal (2015) “Use of 1-D Hydrodynamic Model to forecast floods of PingaOya in Akurana area”, Proceedings of the Civil Engineering Project Symposium, CEPS 2014, Peradeniya, Sri Lanka, pp.6-7.

Wijesinghe, K.L.A.S. and K.D.W. Nandalal (2015) “Flood Risk Reduction and Preparedness Plan for Batticaloa Municipal Council Area”, Proceedings of the PGIS Research Congress – 2015, Peradeniya, Sri Lanka, p.9.

Hewavidana, S.M.,Sirisena, T.A.J.G.,Dharmadasa, V.,Senarathne,D.E.N.,Subasinghe,S.M.C.K.,Nandalal, K. D. W.,Raveenthiran, K.,Saravanapavan, T.,Liyanage,R. and H.N.R. Perera (2015) “Probable Maximum Flood for Proposed Demodara Dam Site, Sri Lanka”, Annual Sessions of IESL, The Institution of Engineers, Sri Lanka,pp.367 – 372.

Pushpakumara, P.K.P., Nandalal, K.D.W. and S.B. Weerakoon (2015) “IMPACTS OF SEA LEVEL RISE AND BED LEVEL ACCRETION ON RESIDENCE TIME OF NEGOMBO LAGOON, SRI LANKA”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.19, p.11.

Sajihan, J.A.M.,Jayathilaka, R.M.C.P.S.,Rathnayake, R.M.C.E.M. and K.D.W. Nandalal (2015) “Development of flood maps for PingaOya in Akurana area”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.19, p.85.

Kanchanamala, D.P.H.M.,Herath, H.M.H.K. and K.D.W. Nandalal (2015) “Application of some methods for screening rainfall records at seven gauging stations in Kalu ganga upper catchment”,Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.19, p.88.

Priyankara, W.M.S., Weerakoon, S.B. and K.D.W. Nandalal (2015) “Runoff model development for Nilambe catchment in Sri Lanka using HEC-HMS”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.19, p.104.

Caldera, H.P.G.M., Piyathisse, V.R.P.C. and K.D.W. Nandalal (2015) “Filling gaps in a hydrological time series: a probabilistic approach”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.19, p.123

Marapana, N.M.N.C. and K.D.W. Nandalal (2015) “Development of a GUI combined database for reservoirs”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka, Vol.19, p.124.

Pushpakumara, P.K.P., Weerakoon, S.B. and K.D.W. Nandalal (2016) “Impacts of sea level rise and bed level accretion on salinity level of Negombo lagoon, Sri Lanka”, Proceedings of the 8thEWRI Conference “International Perspective on Water Resources and the Environment”, Colombo, Sri Lanka, January 2016. Paper no. 73 (in CD).

Priyankara, W.M.S., Weerakoon, S.B. and K.D.W. Nandalal (2016) “Calibration and Validation of HEC-HMS Model for estimation of catchment sediment yield – A case study Nilambe catchment in Sri Lanka”, Proceedings of the 8th EWRI Conference “International Perspective on Water Resources and the Environment”, Colombo, Sri Lanka, January 2016. Paper no. 55 (in CD).

Sirisena1, T.A.J.G.,Subasinghe, S.M.C.K., Dharmadasa, V., Senarathne, D.E.N., Ranasinghe, D.P.L.,Nandalal, K.D.W. and K. Raveenthiran (2016) “Hydrological investigations to facilitate the design of Demodara dam”, Proceedings of the IAHR APD Conference, Colombo, Sri Lanka, Paper 3D006.

Rajapaksha1, R.W.C.N.,Subasinghe, S.M.C.K., Halgahawatte, H.R.L.W.,Weerasinghe, W.L.K., Manoranjan, M., Nandalal, K.D.W, Raveenthiran, K. and M.Cassim (2016) “Eater resources modelling study to upatate water supply master plan for western province metropolitan area, Sri Lanka”, Proceedings of the IAHR APD Conference, Colombo, Sri Lanka, Paper 3E002.