Chennai: Despite widespread rainfall across Tamil Nadu following the intensification of the northeast monsoon, water levels in most reservoirs remain alarmingly low, raising concerns over water availability in the coming months, news agency IANS reported on Tuesday, citing Water Resources Department officials.

Source: IANS via Asia Post

75.7 TMCWater held by Tamil Nadu's 90 reservoirs combined
33.7%Share of their combined storage capacity
43 reservoirsHolding less than 25% storage; only 3 are full

According to Water Resources Department officials, the state's 90 reservoirs collectively hold only 75.7 thousand-million cubic feet (TMC) of water, accounting for just 33.7 per cent of their combined storage capacity. Only three reservoirs have reached full capacity, while 43 have less than 25 per cent storage. Another 24 reservoirs have water levels below 50 per cent, highlighting the continuing impact of inadequate rainfall and prolonged heat.

Although districts along the Western Ghats have received northeast monsoon showers over the past several days, rainfall has only recently become widespread across northern Tamil Nadu, and it has yet to translate into a substantial improvement in reservoir storage. Officials attribute the situation primarily to prolonged dry weather and intense heat, which have left reservoir beds severely parched.

An official associated with the Dam Protection Movement said the El Niño weather phenomenon had contributed to deficient southwest monsoon rainfall, resulting in a sharp decline in water levels across several reservoirs. As storage dropped, large stretches of reservoir beds became exposed, and persistent high temperatures dried the accumulated silt and soil, causing extensive cracks. "The rainfall currently being received is being absorbed rapidly by the dried-up reservoir beds. Consequently, there has been no significant increase in water storage," the official said, adding that sustained rainfall would be necessary to replenish soil moisture and groundwater before substantial surface water could accumulate.

Source: IANS via hi INDiA

A few reservoirs have recorded encouraging levels: Gundar in Tenkasi, Mambazhathuraiyar in Kanniyakumari, Sothuparai in Theni, Sastha Koil and Kullursandai in Virudhunagar and Varadhamanadhi in Dindigul have reportedly crossed 95 per cent of capacity, and the Peruvaripallam reservoir under the Coimbatore Water Resources Department has also recorded storage above 95 per cent. Officials said the uneven distribution underscores the need for sustained monsoon rainfall, and authorities are closely monitoring rainfall patterns and reservoir inflows to assess whether storage improves in the coming weeks.