World · Sri Lanka Bureau
Deduru Oya Reservoir Approaches Spill Level as Heavy Rains Persist
The Department of Irrigation has activated spillway operations at the Deduru Oya Reservoir as water levels surge following intense rainfall across the upper and middle basin regions. Authorities have opened sluice gates to manage the rising waters and prevent overflow.
LSN Sri Lanka ·

The Deduru Oya Reservoir is operating near maximum capacity as prolonged heavy rains drench the catchment area, prompting irrigation officials to commence controlled water release operations. The Department of Irrigation confirmed that sluice gates have been opened to regulate the swelling water levels in the reservoir.
The rapid rise in water levels follows significant rainfall in the upper and middle regions of the Deduru Oya basin. This section of the river system has historically been vulnerable to flooding during periods of intense precipitation, making the spillway management critical for downstream communities and infrastructure.
The controlled release of water through the sluice gates is a standard precautionary measure designed to prevent uncontrolled overflow and manage potential flood risks along the river course. The Department of Irrigation continues to monitor water levels and weather conditions closely as the rainy period persists across the region.
Residents and authorities in downstream areas have been advised to remain alert to water flow conditions and heed any additional guidance from irrigation officials. The department has indicated it will provide updates as the situation develops.