COLOMBO, September 26 — The Irrigation Department has officially extended its high-alert flood warnings for the Gin Ganga and Nilwala River Basins for an additional 24 hours as persistent heavy rainfall continues to batter the southern regions of Sri Lanka.
The extension, announced early this morning, confirms that the threat of overflowing riverbanks remains critical. The initial flood warnings were first triggered at 2:00 a.m. on September 24, 2026, as water levels surged following relentless precipitation across the catchment areas. Despite minor fluctuations in rainfall intensity over the past 48 hours, the hydrology units remain concerned that the ground is completely saturated, leaving the river systems highly vulnerable to flash flooding.
Residents living in low-lying areas adjacent to these river basins have been urged to remain on high alert and to prepare for potential evacuations should water levels rise further. Local authorities are closely monitoring the situation, particularly in areas historically prone to inundation. Disaster management teams have been placed on standby, equipped with rescue apparatus to respond swiftly to any emergencies that may arise as the saturated landscape struggles to absorb the ongoing rainfall.
The Irrigation Department has issued a stern advisory to the general public, emphasizing the need for extreme caution. Beyond the threat to residential properties, the department has highlighted the significant dangers posed to transportation networks. Motorists navigating the affected regions are being cautioned against attempting to traverse submerged roads. Officials have specifically warned that minor, secondary roads in the Southern Province are particularly susceptible to sudden flooding and structural instability, which could trap vehicles or lead to accidents.
“Drivers should exercise maximum vigilance, especially when traveling at night or through poorly lit, low-lying routes near the riverbanks,” a spokesperson for the department stated. “Even if a road appears passable, the risk of hidden washouts or rapid water level increases remains high.”
Meteorological experts suggest that the current weather pattern is being driven by an active monsoon trough, which has been stagnant over the island for the past three days. While forecasts for the coming weekend show a potential reduction in rainfall, the delay in water receding means that the danger phase is far from over.
Public safety agencies are advising citizens to stay tuned to official government broadcasts and to avoid unnecessary travel within the immediate vicinity of the Nilwala and Gin Ganga basins. As the 24-hour extension takes effect, the government continues to prioritize the safety of those in the most exposed floodplains. Emergency hotlines have been activated for residents requiring assistance, and local divisional secretariats are coordinating relief efforts to ensure that adequate supplies and support are available should the situation deteriorate further over the next day.
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