Will Ratnapura flood in the next hour?

Ratnapura flood risk right now: Minor flood. This is an estimate based on the Ratnapura gauge on the Kalu Ganga (under 1 km away), which read 28.5 ft as of Tue, 27 Oct, 3:04 am (Sri Lanka time). In the next hour the Kalu Ganga at Ratnapura could rise to about 28.5 ft (28.3–28.8 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 Ratnapura 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 Ratnapura flooding?

Ratnapura

Ratnapura flood risk right now: Minor flood. This is an estimate based on the Ratnapura gauge on the Kalu Ganga (under 1 km away), which read 28.5 ft as of Tue, 27 Oct, 3:04 am (Sri Lanka time).

Reading at 3:04 am · 37 min ago

Minor flood

28.5 ft

Next hour

River rising slowly

Next 24 hours

Risk stays high

Leave low areas near the river

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

Call 117 Ratnapura DMC office

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 Kalu Ganga
Kalu Ganga at Ratnapura is 28.5 ft, rising slowly (at minor flood level)
64 mm of rain in the last 24 hours

Your river

Ratnapura

Kalu Ganga · under 1 km away

Minor flood28.5 ft3:04 am

Is this right?

Each answer helps us improve the forecast for your area.

Based on: Ratnapura gauge on the Kalu Ganga, under 1 km away

Set your street's flood level

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

Rain in Ratnapura

Moderate rain in the last 24 hours (64 mm). Moderate rain expected early this morning, about 20 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 (Kalu Ganga 2017), these Grama Niladhari divisions around Ratnapura were partly or fully under water:

Ratnapura Town West2017
Ratnapura Town North2017
Ratnapura Town2017
Mudduwa East2017
Weralupe2017
Mihindugama2017
Muwagama2017
Mudduwa2017
and 3 more nearby

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

Flood help and phone numbers

Common questions

Is Ratnapura flooding now?: Ratnapura flood risk right now: Minor flood. This is an estimate based on the Ratnapura gauge on the Kalu Ganga (under 1 km away), which read 28.5 ft as of Tue, 27 Oct, 3:04 am (Sri Lanka time).
Will Ratnapura flood in the next hour?: Ratnapura flood risk right now: Minor flood. This is an estimate based on the Ratnapura gauge on the Kalu Ganga (under 1 km away), which read 28.5 ft as of Tue, 27 Oct, 3:04 am (Sri Lanka time). In the next hour the Kalu Ganga at Ratnapura could rise to about 28.5 ft (28.3–28.8 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 Ratnapura 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.

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