Where does this come from and how often does it update?

River readings come from the Department of Irrigation's gauges, roughly once an hour, and this page checks for new ones every minute. This site is independent and not an official warning service: follow the Disaster Management Centre and call 117 in an emergency.

Is Wellawatta flooding?

Wellawatta, Colombo

Wellawatta flood risk right now: No estimate right now. This is an estimate from rain and official warnings, because no river gauge is close enough to use.

Flood estimate

No estimate right now

We cannot estimate Wellawatta right now: the nearest river gauge has no usable reading.

Details

How this estimate works

· Starts from the river gauge's own level and forecast, the same as the gauge page.
· Heavy rain here (50 mm in 6 hours or 100 mm in 24 hours) raises it by one step, never more.
· Your own street level, if you set one, and official warnings can raise it further.
· It never says flooding is happening: only a measurement can show that.

Why

54 mm of rain in the last 24 hours

Rain in Wellawatta

Moderate rain in the last 24 hours (54 mm). Moderate rain expected early this morning, about 17 mm in the next 24 hours.

mm per hour

Tap or hover a bar to see that hour.

Fallen
Forecast
|
Light
Moderate
Heavy

Fallen: estimated by a weather model (satellite rain is not available for this town). Forecast: Open-Meteo.

Rain map

It is around high tide now. Canals drain slowest for the next hour or so. Next high tide around 3:03 pm.

Predicted tide; times can be off by up to an hour.

How water drains here

Water here drains south through the Kirulapone and Wellawatta canals and the Dehiwala canal straight to the sea. These canals rise and fall with the tide, so heavy rain at high tide drains slowly. The Kelani gauge does not decide flooding here.

No river gauge decides flooding here (the water goes to the sea, not the Kelani), so this page reads official warnings only. Rain and tide are shown as context.

Colombo canals explained

Canal levels now · Wellawatta and Dehiwala canals

Sea at the Kelani mouth
Reading 1:15 am
Wellawatta NNot reporting
Reading 1:00 am
Nawala RoadNot reporting

Did the streets near you get water today?

Your answer helps us check our warnings. It is anonymous: we save only the town and your answer. Nobody sees single answers; we show only totals of 3 or more.

When? (optional)

Flood help and phone numbers

Common questions

Is Wellawatta flooding now?: Wellawatta flood risk right now: No estimate right now. This is an estimate from rain and official warnings, because no river gauge is close enough to use.
Where does this come from and how often does it update?: River readings come from the Department of Irrigation's gauges, roughly once an hour, and this page checks for new ones every minute. This site is independent and not an official warning service: follow the Disaster Management Centre and call 117 in an emergency.