Minor flooding along Gin River as water levels rise in five areas

The Irrigation Department has reported minor flooding in low-lying areas along the Gin River after water levels rose on Monday evening.

The affected low-lying areas fall within Thawalama, Hiniduma, Baddegama, Nagoda and Divithura, Hiru News reported. The department has asked residents of those areas to remain alert to the developing situation.

The Gin River rises in the Gongala hills and runs through the Galle district to the sea at Gintota. The areas named sit along its middle and lower reaches, where the valley broadens and low-lying ground floods readily when the catchment takes sustained rain.

The rise follows several days of heavy weather across the southwest, including the flooding in Colombo that has dominated the past week and the earth slip and flooding reported at Hatton.

Not reported

The filing is brief and leaves most of the quantitative detail out. It does not give the river’s gauge height at any station, does not state which alert threshold has been crossed, if any, and does not characterise the flooding beyond “minor.” It gives no number of affected households or evacuations, does not name any road closures, and carries no rainfall figure for the catchment. It does not say how long the department expects levels to stay elevated, and quotes no named official.

A note on sourcing

This report is single-source. Ada Derana has carried the Gin Ganga advisory, but that site has returned HTTP 403 to this desk on every route tried for more than a week and cannot be fetched or date-verified, so it cannot be cited. The Daily Mirror and NewsFirst rails were checked directly and carry nothing on this particular rise.

Readers should also be aware that “minor flood warning for low-lying areas of the Gin River” is close to a standing seasonal headline. Searches return several distinct Gin Ganga advisories — including ones tied to Cyclone Arnab and a separate late-October episode — with near-identical wording and overlapping place lists. Figures circulating against that phrase, such as a 4.10-metre reading at Thawalama against a 4.00-metre alert level, belong to earlier advisories and are not stated in Monday’s filing. They are deliberately excluded here. The detail that fixes this report in time is the Monday-evening rise and the five areas named above.