Will Deraniyagala flood in the next hour?

Deraniyagala flood risk right now: Normal. This is an estimate based on the Deraniyagala gauge on the Kelani Ganga (under 1 km away), which read 5.2 ft as of Tue, 27 Oct, 3:09 am (Sri Lanka time). In the next hour the Kelani Ganga at Deraniyagala could fall to about 5.1 ft (4.8–5.5 ft). This is a forecast for the river, not an official warning, and streets can flood before the river reaches a flood mark.

How is the flood risk for Deraniyagala worked out?

From the nearest river gauge ({gauge}, under 1 km away), recent and expected rain, the gauge's forecast and any official warning. It is an estimate for the town, not an official warning, and streets can flood before the river reaches a flood mark.

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 Deraniyagala flooding?

Deraniyagala, Kegalle

Deraniyagala flood risk right now: Normal. This is an estimate based on the Deraniyagala gauge on the Kelani Ganga (under 1 km away), which read 5.2 ft as of Tue, 27 Oct, 3:09 am (Sri Lanka time).

Reading at 3:09 am · 25 min ago

Normal

5.2 ft

Irrigation Department has issued a flood warning for Kelani Ganga

Next hour

River falling

Next 24 hours

Check again in a few hours

Experimental estimate from the Deraniyagala river gauge, plus rain at the town and official warnings.

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

Irrigation Department has issued a flood warning for Kelani Ganga
Kelani Ganga at Deraniyagala is 5.2 ft, falling (normal)
57 mm of rain in the last 24 hours

Your river

Deraniyagala

Kelani Ganga · under 1 km away

Normal5.2 ft3:09 am

Is this right?

Each answer helps us improve the forecast for your area.

Based on: Deraniyagala gauge on the Kelani Ganga, under 1 km away

Set your street's flood level

At what Deraniyagala reading does water reach your street? Saved on this device only, never sent anywhere.

Rain in Deraniyagala

Heavy rain in the last 24 hours (57 mm). Moderate rain expected this morning, about 22 mm in the next 24 hours.

mm per hour

Tap or hover a bar to see that hour.

Rain map

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)

River map

GaugeReservoirTap a gauge or reservoir for details.

Official flood map

In the Irrigation Department's maps of past floods (Kelani Ganga 2016 major flood), these Grama Niladhari divisions around Deraniyagala were partly or fully under water:

Deraniyagala South2016
Deraniyagala2016
Lassegama2016

This shows where a past flood reached, not a flood now. A bigger flood can go further.

Flood maps: Irrigation Department of Sri Lanka

Flood help and phone numbers

Common questions

Is Deraniyagala flooding now?: Deraniyagala flood risk right now: Normal. This is an estimate based on the Deraniyagala gauge on the Kelani Ganga (under 1 km away), which read 5.2 ft as of Tue, 27 Oct, 3:09 am (Sri Lanka time).
Will Deraniyagala flood in the next hour?: Deraniyagala flood risk right now: Normal. This is an estimate based on the Deraniyagala gauge on the Kelani Ganga (under 1 km away), which read 5.2 ft as of Tue, 27 Oct, 3:09 am (Sri Lanka time). In the next hour the Kelani Ganga at Deraniyagala could fall to about 5.1 ft (4.8–5.5 ft). This is a forecast for the river, not an official warning, and streets can flood before the river reaches a flood mark.
How is the flood risk for Deraniyagala worked out?: From the nearest river gauge ({gauge}, under 1 km away), recent and expected rain, the gauge's forecast and any official warning. It is an estimate for the town, not an official warning, and streets can flood before the river reaches a flood mark.
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.

Kelani Ganga · Sources: Department of Irrigation gauges, Open-Meteo rain, Disaster Management Centre warnings.