Vetted by NeuralPress's Multi-Agent Verifier for strict factual validity and event relevance. Our compliance engine cross-checks and filters search results to ensure zero false correlations or misleading content.
Water Discharge Rates (Cubic Feet per Second)
Comparative water release rates for major reservoirs currently spilling.
Primary Sources
16 major Reservoirs release water amid heavy rainfall
Sixteen major reservoirs and ten medium‑scale reservoirs under the control of the Irrigation Department are currently releasing water following heavy rainfall, according to H.M.P.S.D. Herath, Director (Water Management Engineer) of the department. Among the major reservoirs releasing water are Rajanganaya in Anuradhapura, Sorabora Wewa in Badulla, Weerawila, Lunugamvehera, and Weheragala in Hambantota, Magalla and Deduru Oya in Kurunegala, Wemedilla and Nalanda in Kandy, and Alikota Ara in Monaragala. Herath noted that due to intense rainfall in the Kalawewa river basin in recent days, the Rajanganaya, Devahuwa, and Wemedilla reservoirs are discharging water. Twelve sluice gates of the Rajanganaya reservoir have been opened, releasing about 18,500 cubic feet of water per second. Similarly, heavy rainfall in the Kirindi Oya river basin has led to the release of water from Lunugamvehera, Tissa Wewa, Weerawila, Yoda Wewa, and Alikota Ara reservoirs. Six sluice gates of Lunugamvehera have been opened, discharging around 7,100 cubic feet of water per second. At Weheragala, six sluice gates are open, releasing more than 2,400 cubic feet of water per second into the Menik Ganga. Medium‑scale reservoirs currently releasing water include Angamuwa, Boburuella, Mahasiyambalangamuwa, Saddhatissa, Malimpotha, and Marathamadu. Herath cautioned that water release volumes may change depending on rainfall, and urged residents living near reservoirs and in low‑lying areas to remain vigilant. (Newswire) 2026-05-12
16 major and 10 medium reservoirs spilling amid heavy rainfall across ...
A total of 16 major reservoirs and 10 medium-sized reservoirs managed by the Department of Irrigation are currently spilling due to the prevailing heavy rainfall across the country, according to Director of Irrigation (Water Management) Eng. H.M.P.S.D. Herath. Among the major reservoirs currently spilling are the Rajanganaya Reservoir in Anuradhapura District, Sorabora Wewa in Badulla District, and the Weerawila Reservoir, Lunugamwehera Reservoir, and Weheragala Reservoir in Hambantota District. Other affected reservoirs include the Magalla Reservoir and Deduru Oya Reservoir in Kurunegala District, the Wemadilla Reservoir and Nalanda Reservoir in Kandy District, as well as the Alikota Ara Reservoir in Monaragala District. Herath stated that intense rainfall in the Kala Wewa River Basin over the past few days had caused the Rajanganaya, Dewahuwa, and Wemadilla reservoirs to spill. He further noted that 12 spill gates of the Rajanganaya Reservoir have been opened, releasing water at a rate of 18,500 cubic feet per second. Due to persistent heavy rainfall in the Kirindi Oya River Basin, the Lunugamwehera, Tissa Wewa, Weerawila, Yodha Wewa, and Alikota Ara reservoirs within the basin are also currently spilling. Accordingly, six spill gates of the Lunugamwehera Reservoir have been opened, with water being released at a rate of 7,100 cubic feet per second. In addition, six spill gates of the Weheragala Reservoir have been opened, releasing more than 2,400 cubic feet of water per second into the Menik Ganga. The medium-sized reservoirs currently spilling include the Angamuwa Reservoir, Bomburuella Reservoir, Maha Siyambalangamuwa Reservoir, Saddhatissa Reservoir, Malimpotha Reservoir, and Marathamadu Reservoir. The Irrigation Director has urged residents living in low-lying areas and in the vicinity of reservoirs to remain vigilant, noting that water levels at spill gates may fluctuate further depending on future rainfall conditions.
Sluice Gates Opened At Several Reservoirs Due To Heavy Rains
COLOMBO (News 1st);The Department of Irrigation states that sluice gates of several reservoirs, including Lunugamvehera and Rajanganaya, have been opened due to heavy rainfall.
Spill gates opened in 9 major reservoirs amid heavy rainfall
Nine major reservoirs and five medium-scale reservoirs managed by the Department of Irrigation are currently spilling due to ongoing heavy rainfall, the department announced.
