Will Polonnaruwa flood in the next hour?

Polonnaruwa flood risk right now: Normal. This is an estimate based on the Manampitiya gauge on the Mahaweli Ganga (8.5 km away), which read 1.7 ft as of Tue, 27 Oct, 3:02 am (Sri Lanka time). In the next hour the Mahaweli Ganga at Manampitiya should stay about the same (1.5–2.0 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 Polonnaruwa worked out?

From the nearest river gauge ({gauge}, 8.5 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 Polonnaruwa flooding?

Polonnaruwa

Polonnaruwa flood risk right now: Normal. This is an estimate based on the Manampitiya gauge on the Mahaweli Ganga (8.5 km away), which read 1.7 ft as of Tue, 27 Oct, 3:02 am (Sri Lanka time).

Reading at 3:02 am · 2 h ago

Normal

1.7 ft

Next hour

River falling

Next 24 hours

No flooding expected today

Experimental estimate. There is no river gauge in Polonnaruwa; this uses Manampitiya, 8.5 km away, 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

Mahaweli Ganga at Manampitiya is 1.7 ft, falling (normal)
69 mm of rain in the last 24 hours

Your river

Manampitiya

Mahaweli Ganga · 8.5 km away

Normal1.7 ft3:02 am

Is this right?

Each answer helps us improve the forecast for your area.

Based on: Manampitiya gauge on the Mahaweli Ganga, 8.5 km away

Set your street's flood level

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

Rain in Polonnaruwa

Heavy rain in the last 24 hours (69 mm). Little or no rain expected 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)

Reservoirs upstream

Official flood map

In the Irrigation Department's maps of past floods (Mahaweli Ganga 2012), these Grama Niladhari divisions around Polonnaruwa were partly or fully under water:

Palugasdamana South2012

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 Polonnaruwa flooding now?: Polonnaruwa flood risk right now: Normal. This is an estimate based on the Manampitiya gauge on the Mahaweli Ganga (8.5 km away), which read 1.7 ft as of Tue, 27 Oct, 3:02 am (Sri Lanka time).
Will Polonnaruwa flood in the next hour?: Polonnaruwa flood risk right now: Normal. This is an estimate based on the Manampitiya gauge on the Mahaweli Ganga (8.5 km away), which read 1.7 ft as of Tue, 27 Oct, 3:02 am (Sri Lanka time). In the next hour the Mahaweli Ganga at Manampitiya should stay about the same (1.5–2.0 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 Polonnaruwa worked out?: From the nearest river gauge ({gauge}, 8.5 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.

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

Is Polonnaruwa flooding?

Normal

Why

Your river

Is this right?

Set your street's flood level

Rain in Polonnaruwa

Did the streets near you get water today?

River map

Reservoirs upstream

Official flood map

Common questions

Common questions

River map

Reservoirs upstream