Senior Lecturer at the Department of Civil Engineering, Faculty of Engineering, University of Peradeniya

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Ph.D. The University of Tokyo, Tokyo, Japan (2018)
MEng. The University of Tokyo, Tokyo, Japan (2015)
B.Sc. Eng (First Class Hons) University of Peradeniya, Peradeniya, Sri Lanka (2012)

Senior Lecturer Gr II, Department of Civil Engineering, Faculty of Engineering, University of Peradeniya (September 2020 - Present)
Lecturer (Probationary), Department of Civil Engineering, Faculty of Engineering, University of Peradeniya (October 2018 - September 2022)
Visiting Lecturer, Postgraduate Institute of Agriculture (PGIA),University of Peradeniya (2024 - Present)
Visiting Lecturer, Department of Civil Engineering, Faculty of Engineering, Open University of Sri Lanka, Sri Lanka (2021 - 2023)
Associate Research Fellow, Institute of Industrial Science, The University of Tokyo
Part-time Warden, New Akbar Hall, University of Peradeniya (2024 - 2025)
Acting Director, International Relations Office (InRO), University of Peradeniya (October 2024 - January 2025)
Director, Sri Lanka Japan Study Centre, University of Peradeniya (November 2022 - November 2023)

Peramuna, P.D.P.O., Neluwala, N.G.P.B., Wijesundara, K.K., Venkatesan, S., De Silva, S. and Dissanayake, P.B.R., 2024. Novel approach to the derivation of dam breach parameters in 2D hydrodynamic modeling of earthquake induced dam failures. Science of the total environment, 927, p.171505 https://doi.org/10.1016/j.scitotenv.2024.171505
Sadushan, S. and Neluwala, N.G.P.B., 2024. Application of GIS & RS in Rainwater Harvesting for an Arid Region. ENGINEER, 57(02), pp.69-80 https://doi.org/10.4038/engineer.v57i2.7650
Koswaththa, H.M.S.A., Ranasinghe, S.K., Ekanayake, I., Herath, D. and Neluwala, N.G.P.B., 2024. Downscaling Future Precipitation over Mi Oya River Basin using Artificial Neural Networks. ENGINEER, 57(02), pp.57-67 https://doi.org/10.4038/engineer.v57i2.7649
Abeyratne, W.M.L.K., Weerakoon, S.B., Neluwala, P. and Ratnaweera, H., 2023. Suspended solid removal efficiency of plate settlers and tube settlers analysed by CFD modelling. Water Science & Technology, 87(9), pp.2116-2127 https://doi.org/10.2166/wst.2023.107
Gimhan, P.G.S., Neluwala, P., Acierto, R.A. and Raghavan, S.V., 2022. Assessment of WRF microphysics and cumulus parameterizations in simulating heavy rainfall events over Badulu Oya catchment, Sri Lanka. Journal of Water and Climate Change, 13(12), pp.4213-4233 https://doi.org/10.2166/wcc.2022.371

URC Research Award 2024 — University of Peradeniya
Awarded for Outstanding Research Contribution at the University of Peradeniya in 2024.
Furuichi Kimatake Prize — The University of Tokyo
Awarded for an Outstanding Master’s Thesis.
S. D. & C. C. Award — Institution of Engineers, Sri Lanka (IESL)
Best Paper by an Associate Member published in the Engineer Journal during the 2013/2014 session.
Paper: “Characteristics of Hydraulic Jumps over Rough Beds – An Experimental Study”
Authors: N. G. P. B. Neluwala, K. T. S. Karunanayake, K. B. G. M. Sandaruwan & K. P. P. Pathirana
Ceylon Development Engineering Prize for Best Performance in Civil Engineering — University of Peradeniya
Awarded at the Convocation held in Peradeniya.
J. B. Dissanayake Prize for Industrial Training — University of Peradeniya
Awarded at the Convocation held in Peradeniya.
Migara Ranathunga Trust Award — Institution of Engineers, Sri Lanka (IESL)
Awarded for Best Civil Engineering Undergraduate Training (2012).

National Research Council (NRC) of Sri Lanka – Grant No. IDF 24-106
Comparative Analysis of Machine Learning and Numerical Weather Prediction Models for Enhanced Local Weather Forecasting and Water Resource Management in Sri Lanka
Multidisciplinary Research Grant (GN526) — University of Peradeniya, Sri Lanka (2024) (Co-Investigator)
University Research Grant (URG/2021/18/E) — University of Peradeniya, Sri Lanka (2021)
Japanese Government (Monbukagakusho: MEXT) Scholarship – PhD Program October 2015 – October 2018
Japanese Government (Monbukagakusho: MEXT) Scholarship – MSc Program October 2013 – October 2015

Capacity Building Program for Senior Student Counsellors, Staff Development Centre, University of Peradeniya — 13th, 16th & 18th December 2024
Basic WRF Tutorial Training – Summer 2024, Organized by the National Center for Atmospheric Research (NCAR), USA
Knowledge Co-Creation Program (Country Focus), Innovative Asia: Kyushu University, Japan (Historical Environment Design) — February 2020
Postdoctoral Training, Water and Society (WaSo) Project, NORHED – Government of Norway — June–July 2019
Third Workshop on Publicizing Research to the General Public – 2018, International Affairs Office, University of Peradeniya — November 2018
Workshop on Developing Research Supervision, NORAD WaSo-Asia Project, University of Peradeniya — November 2018
Riken International School of Data Assimilation, Riken Advanced Institute for Computational Science, Kobe, Japan — January 2018

Plenary Speech: “Dam Safety and Preparedness for Critical Infrastructure under Climate Change”
Regional Climate Change Conference (RCCC 2025) — 14 October 2025

Plenary Speech at RCCC 2025

Keynote Speech: Technical Conference – Young Engineers’ Forum (YEF-SLNCOLD-2024)
Sri Lanka National Committee on Large Dams (SLNCOLD)
Workshop on HEC-RAS Model, Organized by Engineering Design Centre (EDC), Faculty of Engineering, University of Peradeniya — June 2023
Workshop on HEC-ResSim Model, Organized by Engineering Design Centre (EDC), Faculty of Engineering, University of Peradeniya — 19 October 2023
Workshop on Weather Research and Forecasting (WRF) Model, Organized by Engineering Design Centre (EDC), Faculty of Engineering, University of Peradeniya — 27 February 2020

Consulting Services for Investigation for Identifying Locations for New Hydrological Stations in Twenty-Seven (27) River Basins in Sri Lanka (Contract Number: SLMOI/CRES/ID/C/QCBS/125)
Flood Management Plan for Waggalmodara Canal- Replacement of Mihiripanna Pumping station -Galle District (2024)
Comprehensive Analysis for Slope Stability and Risk Reduction Measures in Forebay Area at Nillambe Power Station (2023)
Development of Real Time Flood Forecasting Model for Mi Oyo Basin (2021)
Technical Evaluation on Feasibility of Revised Proposals on Proposed Intake Structure and Design of a Forebay Tank for Hemmathagma Water Supply Project (May 2021)
Rehabilitation of Aniwatta Tunnel Aniwatta Tunnel Project (2020)
Development of capacity and implementation of modelling for the preparation of data for a climate Atlas and Development of capacity and implementation of modelling for the preparation of 30 years of downscaled data for a Climate Atlas for Lao PDR (January 2020 to September 2020)