The flood warnings in force for the Gin Ganga and Attanagalu Oya river basins have been extended for a further 24 hours, keeping both advisories active into Thursday.
Both warnings date from 9 November. The notice for the Attanagalu Oya basin was issued at 12.30 p.m. that day, and the notice for the Gin Ganga basin at 8.00 p.m. the same evening. Neither has been withdrawn since; Wednesday night’s announcement extends them again rather than issuing anything new.
Residents living in the affected areas, and motorists using roads that run through them, have been asked to exercise particular care while the warnings remain in place.
How the two warnings developed
The two basins reached this point separately.
The Attanagalu Oya basin in the Gampaha district has been under warning since an amber alert covering nine divisional secretariat divisions was issued on 9 November, as the Basnagoda reservoir spilled.
In the south, minor flooding along the Gin Ganga was reported in several Galle district areas as water levels rose.
Both sit within the broader spell of wet weather that has also produced flooding on Colombo roads and the opening of the Kotmale reservoir spill gates this week, with the Meteorology Department tracking a Bay of Bengal depression expected to affect the east coast from around 15 November.
Not reported
The filing does not name the issuing agency. Earlier warnings in this sequence were issued by the Irrigation Department, which is the body that normally issues river-basin flood warnings, but Wednesday’s notice as reported does not state this and we have not independently confirmed it.
The filing also gives no current river gauge readings, no warning level (minor, amber or major), no list of affected divisional secretariat divisions for this extension, and no indication of whether conditions are improving or deteriorating in either basin. No evacuation or school closure is mentioned.
This item was carried by Hiru News in Sinhala. A check of the Daily Mirror breaking rail and the NewsFirst wire at the time of writing found no corresponding English-language filing on the extension, so the report stands on a single source. Note that “flood warning extended for another 24 hours” is a routinely recurring headline for these same basins — the detail that fixes this one to the current spell is the pair of 9 November issue times above.