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Home›Flood history›Kirindi Oya

When does the Kirindi Oya flood?

Flood warnings on the Kirindi Oya come mostly between November and December.

Since 23 Nov 2025, its 3 gauges have recorded flooding on 5 days and alert levels on 8 days. The most recent flood was 8 May – 11 May 2026, at Thanamalwila (major flood).

Below each line is what the river gauges recorded; above it, our estimate of how high the rivers ran, going back to 2022. Updated 27 Oct, 1:00 am (Sri Lanka time). Live Kirindi Oya levels →

Flood warnings by day, one row per year

AlertMinor floodMajor floodEstimatedRecorded
NE monsoon
Inter-monsoon
SW monsoon
Inter-monsoon
JJanFFebMMarAAprMMayJJunJJulAAugSSepOOctNNovDDec
20263d
2025~9d
2024~3d
2023~47d
2022~15d

Taller bars mean more gauges were in warning that day. Tap or hover a day for details. Earlier years are estimates.
Gauge records start 23 Nov 2025

When do flood warnings happen?

Share of days in each month with at least one gauge at alert or worse on the Kirindi Oya.

JanFebMarAprMayJunJulAugSepOctNovDec
Estimated, 2022 to now Measured at gauges, Nov 2025 to now

Biggest flood events on the Kirindi Oya

Runs of days with minor or major flooding, ranked by the worst day.

Year by year

Kirindi Oya: about 9 affected days a year in gauge records since 23 Nov 2025.

Before 23 Nov 2025 there are no gauge records here; estimates suggest about 38 affected days a year in 2022–2024.

YearAffected daysMajor floodMinor floodAlertWorst day
2026(so far)Recorded
6
3
–
3
Major flood 3Minor flood 0Alert 3
Worst day: 8 May · major flood at 1 gauge
2025Recorded from 23 Nov
31
1
10
20
Major flood 1Minor flood 10Alert 20
Worst day: 27 Nov · major flood at 1 gauge
2024Estimated
20
1
2
17
Major flood 1Minor flood 2Alert 17
Worst day: 27 Nov · major flood at 1 gauge (estimated)
2023Estimated
71
4
43
24
Major flood 4Minor flood 43Alert 24
Worst day: 5 Nov · major flood at 2 gauges (estimated)
2022Estimated
24
5
10
9
Major flood 5Minor flood 10Alert 9
Worst day: 26 Dec · major flood at 3 gauges (estimated)

Affected means at least alert level. A day counts once, at the worst level any gauge reached. Years before the gauge records start are estimates.

Flood history by gauge on the Kirindi Oya

  • Kuda Oya
  • Thanamalwila
  • Wellawaya

About this data

Measured: the highest level each gauge reached that day, compared with the Department of Irrigation’s alert, minor-flood and major-flood levels.

Estimated: for years before the gauge records here begin, we estimate how high each river ran from a global river-flow model. These are not official warnings. They show the flood seasons and the big floods well, but can miss the exact day or gauge, especially on small rivers.

Sources: Department of Irrigation river gauges; earlier gauge readings saved by lk_irrigation; river-flow estimates by Open-Meteo. Download the daily records.

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  • Ma Oya
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  • Yan Oya

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Data and credits

Readings from the Department of Irrigation and the Mahaweli Authority. Warnings from the Disaster Management Centre. Rain forecasts from Open-Meteo. Map © OpenStreetMap contributors; some river lines from the Department of Irrigation.

Not an official warning service. In an emergency, call 117.

© 2026 Sri Lanka Water Levels. Built in Sri Lanka. · Made by @shakeeb_x · Automated updates: @waterlevelslk

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