Will Ambalantota flood in the next hour?

Ambalantota flood risk right now: Normal. This is an estimate based on the Moraketiya gauge on the Walawe Ganga (28 km away), which read 7.8 ft as of Tue, 27 Oct, 3:07 am (Sri Lanka time). In the next hour the Walawe Ganga at Moraketiya should stay about the same (7.7–7.9 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 Ambalantota worked out?

From the nearest river gauge ({gauge}, 28 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 Ambalantota flooding?

Ambalantota, Hambantota

Ambalantota flood risk right now: Normal. This is an estimate based on the Moraketiya gauge on the Walawe Ganga (28 km away), which read 7.8 ft as of Tue, 27 Oct, 3:07 am (Sri Lanka time).

Reading at 3:07 am · 29 min ago

Normal

7.8 ft

Next hour

River steady

Next 24 hours

No flooding expected today

Experimental estimate. There is no river gauge in Ambalantota; this uses Moraketiya, 28 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

Walawe Ganga at Moraketiya is 7.8 ft, steady (normal)
27 mm of rain in the last 24 hours

Your river

Moraketiya

Walawe Ganga · 28 km away

Normal7.8 ft3:07 am

Is this right?

Each answer helps us improve the forecast for your area.

Based on: Moraketiya gauge on the Walawe Ganga, 28 km away

Set your street's flood level

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

Rain in Ambalantota

Moderate rain in the last 24 hours (27 mm). Moderate rain expected this afternoon, about 13 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.

Reservoirs upstream

Udawalawe87% fullSteady. CEB doesn't publish live gate releases. We show storage and the Mahaweli weekly plan. Storage: Mahaweli Authority, 26 Oct. Level -0.07 m since 23 Oct.

Flood help and phone numbers

Common questions

Is Ambalantota flooding now?: Ambalantota flood risk right now: Normal. This is an estimate based on the Moraketiya gauge on the Walawe Ganga (28 km away), which read 7.8 ft as of Tue, 27 Oct, 3:07 am (Sri Lanka time).
Will Ambalantota flood in the next hour?: Ambalantota flood risk right now: Normal. This is an estimate based on the Moraketiya gauge on the Walawe Ganga (28 km away), which read 7.8 ft as of Tue, 27 Oct, 3:07 am (Sri Lanka time). In the next hour the Walawe Ganga at Moraketiya should stay about the same (7.7–7.9 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 Ambalantota worked out?: From the nearest river gauge ({gauge}, 28 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.

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