The Department of Irrigation has warned that flooding in the Kalu Ganga basin is expected to develop into a significant flood situation within the next few hours.

A flood warning has been issued for the low-lying areas within the river's floodplain, covering nine Divisional Secretariat divisions. 

These include Kalutara, Ingiriya, Horana, Dodangoda, Millaniya, Bulathsinhala, Palindanuwara, Madurawala, and Agalawatta.

Motorists and passengers travelling through these regions are strongly advised by the Irrigation Department to exercise great caution as water levels continue to rise.