Low river water levels have raised concerns over possible saltwater intrusion in several river basins, potentially affecting drinking water supplies,L.S. Sooriyabandara, Director of Irrigation (Hydrology and Disaster Management) said.
He said rivers across the country are currently at very low levels, with particular concern over the lower basins of the Kelani, Nilwala, Gin and Kalu rivers.
“River water levels are at a very low level at present. There is a risk of saltwater entering some river basins, especially in the lower reaches,” he said.
He noted that authorities are closely monitoring the Kelani River basin for possible saltwater intrusion, which could impact potable water sources.
“If dry conditions continue and rainfall does not materialise, the risk of saltwater intrusion could increase further,” Sooriyabandara said.
Despite the low river levels, he said the country’s irrigation system remains stable due to rainfall received in previous months.
“Out of the 73 major reservoirs, most are currently above 50% capacity, with an average of over 75% water available,” he said.
He added that the Yala cultivation season has already commenced in several areas, with sufficient water available in both major and medium-scale reservoirs.
“We have enough water to begin and sustain the cultivation season at present,” he said.
While forecasts indicate reduced rainfall due to the El Niño effect, Sooriyabandara said authorities remain cautiously optimistic.
“We expect some rainfall during April and May. If that materialises, we are confident that the Yala season can be successfully completed,” he said. (NewsWire)