Significant rainfall over the past 24 hours has caused water levels to rise in Sri Lanka's major rivers, prompting the Department of Irrigation to issue precautionary flood warnings for vulnerable downstream areas.
Heavy rainfall recorded across upper catchment areas over the past day has led to elevated water levels in several of Sri Lanka's major river systems, according to the Department of Irrigation. Engineer L.S. Sooriyabandara, Director of Hydrology and Disaster Management, confirmed that the increased precipitation has necessitated flood alerts for at-risk regions. The department emphasizes that while water levels are rising gradually rather than surging dramatically, residents in vulnerable zones should remain vigilant.
The upper Mahaweli basin experienced particularly intense rainfall, with nearly 200 millimetres recorded in some locations including Nawalapitiya, Nanu Oya and Watawala. Consequently, communities residing along the Mahaweli River between Nawalapitiya and Peradeniya have been advised to stay alert. Officials have indicated that current conditions are not expected to reach the severity of flooding witnessed during Cyclone Ditwah, with overnight rainfall in some areas exceeding 70 millimetres.
The Kelani River basin also experienced substantial rainfall, ranging between 100 and 150 millimetres in upper areas such as Laxapana and Norwood. While upstream water levels around Kitulgala have begun to recede, downstream sections between Hanwella and Avissawella remain at risk. The upper Ratnapura region recorded approximately 100 millimetres of rainfall, pushing levels near warning thresholds. Rivers in the wet zone including the Nilwala and Gin received between 50 and 75 millimetres but are not anticipated to reach flood levels. The Maha Oya and Attanagalu Oya catchments recorded comparatively minimal rainfall with no identified flood threats.
