UMCSAWM Research

UMCSAWM actively contributes to the advancement of water science and engineering through high-impact journal publications and conference proceedings. Our research spans Hydraulics, Water Resources Management, Irrigation, Groundwater Studies, and Coastal & Port Engineering, addressing both global and local challenges in sustainable water management.

1
Kamran, M. & Rajapakse, R.L.H.L. (2018). Effect of Watershed Subdivision and Antecedent Moisture Condition on HEC-HMS Model Performance in the Maha Oya Basin, Sri Lanka. International Journal of Engineering Technology and Sciences (IJETS). ISSN: 2289-697X (Print); ISSN: 2462-1269 (Online) Vol.5 (2)
 
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Dissanayaka, K. D. C. R. &  Rajapakse, R. L. H. L. (2019). Long‑term Precipitation Trends and Climate Extremes in the Kelani River Basin, Sri Lanka, and their Impact on Streamflow Variability under Climate Change. Paddy and Water Environment,  https://doi.org/10.1007/s10333-019-00721-6
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Dissanayaka, K. D. C. R. &  Rajapakse, R. L. H. L. (2019). Long‑term Precipitation Trends and Climate Extremes in the Kelani River Basin, Sri Lanka, and their Impact on Streamflow Variability under Climate Change. Paddy and Water Environment, https://doi.org/10.1007/s10333-019-00721-6
 
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Kamran, M., et al, & Rajapakse, R. L. H. L. (2020). Innovative initiative for effective operation and monitoring using HEC-RAS modelling of Hakra Branch Canal System,The Journal of the International Commission on Irrigation and Drainage (ICID-CIID) Pakistan, 3rd World Irrigation Forum, Bali, Indonesia, Volume 70, Number 3, July 2021 ISSN: 1531-0353, pp 490-504
 
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Siriwardena, K. K. G. I. L.  & Rajapakse R. L. H. L., (2021). Evaluation of Climate Elasticity of Runoff based on Observed Rainfall, Streamflow and Simulated Future Streamflow using SWAT Model in Kelani Ganga Basin, Engineer Journal of the Institution of Engineers Sri Lanka,Volume: 54 Issue: 3, 10.4038/engineer.v54i3.7455
 
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Nab, A. W., Kumar, V. and Rajapakse, R. L. H. L. (2023). Rapid Flash Flood Inundation Mapping using Different Indices: A Case Study of Pul-Alam and Khoshi District of Afghanistan. Model. Earth Syst. Environ
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Nab, A. W., Kumar, V., & Rajapakse, R. L. H. L. (2023). Innovative methods for rapid flood inundation mapping in Pul-e-Alam and Khoshi districts of Afghanistan using Landsat 9 images: spectral indices vs. machine learning models. Modeling Earth Systems and Environment, 10(2), 2495–2513. https://doi.org/10.1007/s40808-023-01914-z
10 Nab, A. W., Farhat, F., Rashid, R.,., & Azmi, F., (2023). Evaluation of Climate Change Impacts on Water Resources of Kabul-Indus River Basin, 9th International Conference on Water and Flood Management-ICWFM 2023,14-16 October 2023, Dhaka, Bangladesh
11

Fernando, R., Ratnasooriya, H., Bamunawala, J., Sirisena, J., Odara,  G. N., Gunawardhana, L., & Rajapakse, L. (2024). Assessing Climate-Change-Driven Impacts on Water Scarcity: A Case Study of Low-Flow Dynamics in the Lower Kalu River Basin, Sri Lanka, Water 2024,16, 1317, https://doi.org/ 10.3390/w16101317
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Ponnamperuma, N. & Rajapakse, L. (2020). “Holistic Behaviour of Urban Pond Systems for Flood Risk Mitigation- A Case Study in Metro Colombo Area,” 2020 Moratuwa Engineering Research Conference (MERCon),27th-30th July 2020, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka., pp. 626-631
13

P. Sudeshika and L. Rajapakse, “Impact of Digital Elevation Model on Rainfall-Runoff-Inundation modelling – A Case Study of Lower Kelani River Basin,” 2021 Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 2021, pp. 528-533, doi: 10.1109/MERCon52712.2021.9525704. https://doi.org/10.1109/mercon52712.2021.9525704
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Ponnamperuma, N. & Rajapakse, L. (2021). “Comparison of Time Series Forecast Models for Rainfall and Drought Prediction,” 2021 Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 2021, pp. 626-631, doi: 10.1109/MERCon52712.2021.9525690.
15

Uthpala, A., & Rajapakse, L. (2022). “Study on Climate Elasticity of Runoff in Kirindi Oya and Maduru Oya Basins in Sri Lanka,” 2022 Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 27-29 July 2022, pp. 1-6, doi: 10.1109/MERCon55799.2022.9906155.
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Wijekoon, T., & Rajapakse, L. (2022). “Climate Elasticity of Runoff in Kalu and Kelani River Basins in the Wet Zone of Sri Lanka,” 2022 Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 2022, pp. 1-6, doi: 10.1109/MERCon55799.2022.9906179.
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Ranasinghe, A. U., Gunawardhana L., &  Rajapakse, R. L. H. L. (2023). Development of a Land Cover Reclassification Scheme for Malwatu Oya Basin in Sri Lanka, 2023 Moratuwa Engineering Research Conference (MERCon), 09th-11th November 2023, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.
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Nab, A. W., Ratnasooriya H., Bamunawala J., & Rajapakse, R. L. H. L. Bridging the Gap: Advancing Hydrological Modelling for the Maduru Oya River Basin, 2023 Moratuwa Engineering Research Conference (MERCon),  09th-11th November 2023, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka. 
19

Jayaminda, C., Gunawardhana L., &  Rajapakse R. L. H. L. (2023). Rating Performances of Global Climate Models in Capturing Monsoon Rainfall Patterns in Sri Lanka, 2023 Moratuwa Engineering Research Conference (MERCon), 09th-11th November 2023, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka. 
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“Nab, A. W., & Wijesekera, N. T. S., (2023). Hydrological Analysis of Streamflow Thresholds and Their Implications for Water Management in Tangi Gharoo Watershed, Kabul River Basin, Moratuwa Engineering Research Conference (MERCon) 2023 09th-11th November 2023, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka. “
21

Karunarathna S. M. S. D., & Rajapakse, R. L. H. L. (2024). Artificial Intelligence Techniques in Hydrology and Water Resources Management and Their Applicability to Sri Lankan River Basins, 2024 Moratuwa Engineering Research Conference (MERCon), 08th-10th August 2024, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka. 
22

Pieris, M. N. N. K., & Rajapakse, R. L. H. L. (2024). Assessment of Water Availability and Demand in Huruluwewa Catchment, Sri Lanka: Case Study Focusing on Trans-basin Water Management, 2024 Moratuwa Engineering Research Conference (MERCon), 08th-10th August 2024, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka. 
23

Suraweera, B., De Silva, K., Gunawardhana, L., & Rajapakse, R. L. H. L. (2024). Evaluation of Satellite Rainfall Estimates for Surface Runoff Modelling in the Maha Oya Basin, Sri Lanka, 2024 Moratuwa Engineering Research Conference (MERCon), 08th-10th August 2024, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.
24

Bajracharya, S., Gunawardhana, L., Sirisena, J., & Rajapakse, R. L. H. L. (2024).Modeling Streamflow Sensitivity to Rainfall Variability in the Budhigandaki River Basin in Nepal, 2024 Moratuwa Engineering Research Conference (MERCon), 08th-10th August 2024, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.
25

Wijekoon, T., & Rajapakse, R. L. H. L. (2024). TSpatial Distribution of Meteorological Droughts in the Kirindi Oya Basin of Sri Lanka with Implications of Climate Change, 2024 Moratuwa Engineering Research Conference (MERCon), 08th-10th August 2024, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.
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Wijayaweera, N., Gunawardhana, L. N., Kazama, S., Rajapakse, L., Patabendige, C. S., & Karunaweera, H. (2024). Exploring spatial and seasonal water quality variations in Kelani River, Sri Lanka: a latent variable approach. Environmental Monitoring and Assessment, 196(11). https://doi.org/10.1007/s10661-024-13251-4
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Wijayaweera, N., Gunawardhana, L., Bamunawala, J., Sirisena, J., Rajapakse, L., Patabendige, C. S., & Karunaweera, H. (2024). Use of Machine Learning and Indexing Techniques for Identifying Industrial Pollutant Sources: A Case Study of the Lower Kelani River Basin, Sri Lanka. Water, 16(19), 2766. https://doi.org/10.3390/w16192766
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Wijekoon, T., Rajapakse, L., & Matheswaran, K. (2024). Climate-driven water stress and hydrological drought vulnerability in the dry zone basins in Sri Lanka: insights from climate modelling and Random Forest algorithm. Modeling Earth Systems and Environment. https://doi.org/10.1007/s40808-024-02144-7
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1
Dahanayake, A. C. & Rajapakse, R. L. H. L., 2017. Sustainable Solutions for the Drying Up of Groundwater Wells – A Case Study in a Selected Watershed in Dampe, Sri Lanka. In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4)
 
2

Jayasinghe, S. N. & Rajapakse R. L. H. L., 2017. Hydrological Modelling Approach for Flood and Water Pollution Control in an Ungauged Catchment: Case Study- Erewwala Catchment in Bolgoda River Basin, Sri Lanka. In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4)

3
Alawatugoda, R. M. M. R. & Wijesekera, N.T.S., 2017. Increasing the Cropping Intensity by Changing the Cropping Pattern in a Minor Tank. In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).
 
4
Chemjong, H. & Wijesekera, N. T. S., 2017. Evaluation of Irrigation Water Issue Practice for Better Water Management at Rajangana Reservoir, Sri Lanka. In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).
 
5
Dissanayake, D.M.S.S & Rajapakse, R.L.H.L., 2017.Study of Urban Water Demand and Distribution System Reliability – A Case Study of Maharagama Water Supply Scheme, Sri Lanka In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).
 
6

Dahanayake, A. C. & Wijesekera, N. T. S., 2017. Potential of Water Balance Modelling with Surface Water Pollution Considerations to Manage Ungauged Watersheds with an Emphasis on Multi User Concepts – Demonstrating an Application at a Watershed in Dampe, Sri Lanka. In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

7

Deshapriya, W.V.K. & Wijesekera, N. T. S., Climate Scenario Identification and Evaluation of Irrigation Responses: Case Study Application of Rambakan Oya Reservoir Using Irrigation Department Guidelines. In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

8Dissanayake, D.M.S.S & Wijesekera, N. T. S., 2017. Incorporation of Water Distribution Network Costs in Water Supply System Design Highlighting the Strength of Raster GIS Modelling In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).
9

Gamage, P. R. & Wijesekera, N. T. S., 2017.Attempting to improve seasonal performance of Land and water productivity through systematic analysis: Case study of Dahanaka Minor Irrigation Tank in Anuradhapura District of Sri Lanka In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

10

Jayadeera, P. M. & Wijesekera, N. T. S., 2017. Quantitative Analysis of Surface water in the Uruboku Oya basin Demonstrating the Application Potential of IWRM Principles to Complex Irrigation Systems In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

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Jayarathna, J. P. G. & Wijesekera, N. T. S., 2017. Drainage Management in an Urban Watershed under Climate Change Scenario using IWRM Concepts In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

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Kamran, M. & Wijesekera, N. T. S., 2017.Climate Change Impacts and Adaptation Measures in Giritale Reservoir in Polonnaruwa Sri Lanka In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

13

Keerthirathne W. H. & Wijesekera, N. T. S., 2017.Determination of a Design Rainfall Pattern by Comparing with its Effect on Streamflow on Greater Colombo Watershed in Sri Lanka In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

14

Kumari, T. K. N. K. & Wijesekera, N. T. S., 2017. A Raster GIS Model for Water Supply Tower and Source Option Prioritisation in Community Based Water Supply Schemes at Attanagalla, Sri Lanka In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

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Rathnayaka R. M. L. U., & Wijesekera, N. T. S., 2017. Raster GIS Modelling when Selecting a Suitable Solid Waste Dumping Site In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

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Sharifi, M. B., & Wijesekera, N. T. S., 2017. Possibility of Increasing the Land and Water Productivity of Command Area in Labunoruwa Irrigation Tank, Anuradapura, Sri Lanka In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

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Thakuri, P. S, & Wijesekera, N. T. S., 2017. Climate Change Impacts and Adaptation Measures for Pahala Divul Wewa, Anuradhapura, Sri Lanka In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

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Thpa, G. & Wijesekera, N. T. S., 2017.Computation and Optimization of Snyder’s Synthetic Unit Hydrograph Parameters In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

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Wangmo, K.. & Wijesekera, N. T. S., 2017.Investigating the Impacts of Climate Change and Adaptation Options in Handegama Tank for Irrigation Water Management In: UMCSAWM Water Conference 2017, UNESCO Madanjeet Singh Centre for South Asia Water Management (UMCSAWM), 19th January 2017, University of Moratuwa, Sri Lanka (ISBN: 978-955-9027-61-4).

 

20

Rashid, S. & Rajapakse, R. L. H. L. (2019). Hydraulic Modelling to Optimize the Available Channel Flows in an Arid Zone of Pakistan. Proc. of the International Conference on Civil Engineering Applications – ICCEA 2019. 25th~26th July 2019, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.

 

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Pandit, B. & Rajapakse, R. L. H. L. (2019). Applicability of ABCD Model for the Identification of Suitable Locations for Run-of-the-river Hydropower Generation in Upper Kelani River Basin in Sri Lanka. Proc. of the International Conference on Civil Engineering Applications – ICCEA 2019. 25th~26th July 2019, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.

 

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“
Choden, P. & Rajapakse, R. L. H. L. (2019). Assessment and Regionalization of Hydrological Model Parameters in Neighbouring Pho Chhu and Mo Chhu Basins in Bhutan – A Study based on ABCD Model. Proc. of the International Conference on Civil Engineering Applications – ICCEA 2019. 25th~26th July 2019, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.
“

 

23

Yadav, D. K. & Rajapakse, R. L. H. L. (2019). Precipitation Trends over the Three Climatic Zones of Mahaweli Basin and Evaluation of Climate Change Impacts on Streamflow Variability. Proc. of the International Conference on Civil Engineering Applications – ICCEA 2019. 25th~26th July 2019, Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.

 

24

Sudeshika D. M. P. & RajapakseR. L. H. L. (2021). Impact of land-use change on Rainfall-Runoff-Inundation (RRI) modelling – A case study of Lower Kelani River Basin.”,Proceedings of the 8th International Symposium on Advances in Civil and Environmental Engineering Practices for Sustainable Development, ACEPS – 2021,Department of Civil and Environmental Engineering, Faculty of Engineering, University of Ruhuna, Hapugala, Galle, 80000, Sri Lanka,2021,214–222

 

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Subramaniyam C. & Rajapakse, L., (2021).”.A Study on Surface Wter Groundwater Interaction in Jaffna Pennsula.”,Proceedings of Civil Engineering Research Symposium 2021 (CERS 2021), Department of Civil Engineering, University of Moratuwa, Sri Lanka, 17th November 2021

 

26

Wijekoon, W.M.R.T.Y., & Rajapakse, R.L.H.L., (2022). “.Study on Climate Elasticity of Runoff in Kalu and Kelani River Basins in the Wet Zone of Sri Lanka.”,Civil Engineering Research Symposium 2022,University of Moratuwa, Sri Lanka,2022,17 – 18

 

27Wijayaweera, N., Gunawardhana, L., & Rajapakse, L. (2023). Investigating the Use of Hydraulic Gradient as an Indicator in Landslide Susceptibility Analysis. National Conference on Disaster Risk Reduction and Management in Sri Lanka: Science, Policy and Practice (DRRMSL – 2023), 25th July 2023, Centre for Disaster Management Research (CDMR), General Sir John Kotelawala Defence University (KDU), Sri Lanka, pp 1-2
28Jayaminda, C., Gunawardhana, L., Rajapakse, L. & Bamunawala, J. (2023). Isohyetal Maps for the Assessment of Future Extreme Precipitation: A Case Study in the Kalu River Basin . National Conference on Disaster Risk Reduction and Management in Sri Lanka: Science, Policy and Practice (DRRMSL – 2023), 25th July 2023, Centre for Disaster Management Research (CDMR), General Sir John Kotelawala Defence University (KDU), Sri Lanka, pp 3-4
29Punchihewa, N. D, Sajitthan, S., Hafsa, M. M .F., Bamunawala, J., & Rajapakse, L., (2023). Flood Hazard Assessment of Kelani, Kalu, and Maha Oya River Basins in Sri Lanka under the Impacts of Climate Change. National Conference on Disaster Risk Reduction and Management in Sri Lanka: Science, Policy and Practice (DRRMSL – 2023), 25th July 2023, Centre for Disaster Management Research (CDMR), General Sir John Kotelawala Defence University (KDU), Sri Lanka, pp 4-5
30Subramaniyam, C., & Rajapakse, L., (2023).”Variants of Recurrent Neural Network Models for Real-Time Flood Forecasting in Kelani River Basin, Sri Lanka.”,Proceedings of the 7th International Conference on Climate Change, Vol. 7, Issue 1, 2023, pp. 56-74, https://doi.org/10.17501/2513258X.2023.7105
31“Punchihewa, N. D., Bamunawala, J., & Rajapakse, L., (2023). Flood Hazard Assessment in Major River Basins in Sri Lanka Under the Impact of Climate Change, International Symposium on Tackling Climate Change as an Underlying Disaster Risk Driver, 27-28 June 2023, pp 13″
32Pieris, M. N. N. K., & Rajapakse, R. L. H. L. (2024). “Evaluating the Impact of Trans-basin Water Transfer on Water Security in Sri Lanka: A Case Study of the Huruluwewa Catchment, Sri Lanka”, Proceedings of Civil Engineering Research Symposium 2024 (CERS 2024), Department of Civil Engineering, University of Moratuwa, Sri Lanka, 26th September 2024
33Madhumal, P.V.R.P., & Gunawardhana, H.G.L.N.. (2024). “Evaluating the Impact of Drought Spatial Distribution on River Flow Dynamics using Remote Sensing Data”, Proceedings of Civil Engineering Research Symposium 2024 (CERS 2024), Department of Civil Engineering, University of Moratuwa, Sri Lanka, 26th September 2024
34Tharuka, W.M.S., & Gunawardhana, H.G.L.N.. (2024). “Assessing Future Low-Flow Variations in a Dry Zone River Basin under Changing Climate Conditions”, Proceedings of Civil Engineering Research Symposium 2024 (CERS 2024), Department of Civil Engineering, University of Moratuwa, Sri Lanka, 26th September 2024
35Wijekoon, T., & Rajapakse, L. (2024). Spatial Distribution of Meteorological Droughts in the Maduru Oya Basin in the Dry Zone of Sri Lanka: Implications of Climate Change. In Lecture notes in civil engineering (pp. 421–434). https://doi.org/10.1007/978-981-97-3737-6_31
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