| Monitoring rainfall trends to predict adverse impacts—a case study from Sri Lanka (1964–1993) S Herath, U Ratnayake Global Environmental Change 14, 71-79, 2004 | 108 | 2004 |
| Changing rainfall and its impact on landslides in Sri Lanka U Ratnayake, S Herath Journal of mountain science 2, 218-224, 2005 | 76 | 2005 |
| Event based modeling of a watershed using HEC-HMS HK Nandalal, UR Ratnayake The Institution of Engineers: Colombo, 2010 | 44 | 2010 |
| Prediction of climate change in Brunei Darussalam using statistical downscaling model DSNAPA Hasan, U Ratnayake, S Shams, ZBH Nayan, EKA Rahman Theoretical and Applied Climatology 133, 343-360, 2018 | 38 | 2018 |
| An ensemble of artificial neural networks in rainfall forecasting HRK Nagahamulla, UR Ratnayake, A Ratnaweera International Conference on Advances in ICT for Emerging Regions (ICTer2012 …, 2012 | 37 | 2012 |
| Flood risk analysis using fuzzy models HK Nandalal, UR Ratnayake Journal of Flood risk management 4 (2), 128-139, 2011 | 36 | 2011 |
| Changes in water cycle: effect on natural disasters and ecosystems U Ratnayake, G Herath Proceedings of Workshop on Sri Lanka National Water Development Report, 2005 | 26 | 2005 |
| Flood inundation mapping along the lower reach of Kelani river basin under the impact of climatic change M De Silva, SB Weerakoon, S Herath, UR Ratnayake, S Mahanama Engineer 45 (2), 23-29, 2012 | 23 | 2012 |
| Monsoon rainfall forecasting in Sri Lanka using artificial neural networks HRK Nagahamulla, UR Ratnayake, A Ratnaweera 2011 6th international conference on industrial and information systems, 305-309, 2011 | 18 | 2011 |
| Evaluation of rainfall and temperature trends in Brunei Darussalam U Ratnayake, S Shams AIP Conference Proceedings 1705 (1), 2016 | 17 | 2016 |
| Selecting most suitable members for neural network ensemble rainfall forecasting model H Nagahamulla, U Ratnayake, A Ratnaweera Recent Advances on Soft Computing and Data Mining: Proceedings of The First …, 2014 | 14 | 2014 |
| Application of WRF with different cumulus parameterization schemes for precipitation forecasting in a tropical river basin GT De Silva, S Herath, SB Weerakoon, UR Rathnayake Proceedings of the 13th Asian Congress of fluid Mechanics 514, 2010 | 14 | 2010 |
| Rainfall forecasting for flood prediction in the Nilwala basin U Ratnayake, DA Sachindra, KDW Nandalal | 14 | 2010 |
| Simulation of a reservoir with standard operating rule R Harboe, U Ratnayake IAHS PUBLICATION, 421-421, 1993 | 10 | 1993 |
| Application of WRF weather model to forecast precipitation in Nilwala river basin KDW Nandalal, DA Sachindra, UR Ratnayake Engineer: Journal of the Institution of Engineers, Sri Lanka 45 (1), 2012 | 9 | 2012 |
| Event based flood modeling in lower Kelani basin M De Silva, SB Weerakoon, S Herath, UR Ratnayake SAITM Research Symposium on Engineering Advancements, 27-28, 2012 | 9 | 2012 |
| Bed shear stress in unsteady open channel flow over rough beds KPP Pathirana, PC Ranasinghe, UR Ratnayake Engineer: Journal of the Institution of Engineers, Sri Lanka 41 (1), 2008 | 9 | 2008 |
| Urban groundwater management issues in Sri Lanka G Herath, U Ratnayake Engineer: Journal of the Institution of Engineers, Sri Lanka 40 (4), 2007 | 9 | 2007 |
| Recent changes in water cycle and its effect on natural disasters and eco systems of Sri Lanka UR Ratnayake, GBB Herath Proceedings of preparatory workshop on Sri Lanka national water development …, 2005 | 9 | 2005 |
| Deterministic and stochastic optimization of a reservoir system U Ratnayake, R Harboe Water International 32 (1), 155-162, 2007 | 8 | 2007 |
