The rapid increase in water level of the Kelani River is a result of the torrential rain experienced in the catchment areas of the River. The water capacity of the Castlereigh and Maoussakelle Reservoirs is increasing following the heavy rain falls.
As such, it is reported that the Castlereigh Reservoir is overflowing while the Maoussakelle Reservoir has reached the spill level. In addition the Norton Bridge, Lakshapana and Canyon Reservoirs are also overflowing. Water from all these Reservoirs flow into the Kelani River, increasing its water level.
Therefore DNC has issued instructions to people of low lying areas around the Kelani River to be vigilant.