The Disaster Management Centre (DMC) says fifteen districts have been affected by the heavy monsoon rains and that a total of 38,040 persons have been affected while 8 deaths have been reported so far.
Inclement weather prompted authorities to warn against landslides and floods in low-lying areas after spill gates had to be opened.
Meanwhile the Department of Irrigation said that flood situations have been reported in several areas due to several major rivers overflowing due to the inclement weather.
Kelani River, Kalu River, Ging River, Nilawala River and Mahaweli River have started to overflow, it said.
Due to the overflow of Maha Oya and Attanagalu Oya a number of lowlands arecame under water.