Mahaweli flood watch

Unofficial. This page re-presents the Department of Meteorology / Disaster Management Centre's published river level reports; it is not issued by them and is not an official warning. Do not make an evacuation decision from this page. The official reports are at dmc.gov.lk, and the DMC emergency line in Sri Lanka is 117.

Peradeniya

Normal

4.41m

▲ 0.15 m/h · Alert in ~4h at this rate · +1.51 in 24h

0.59 m below Alert · higher than 91% of its history

Alert 5Minor 7Major 9

19 Sep 00:30 → 24 Sep 12:30 SLST · shaded: usually, this time of year 1.55–3.86 m, median 2.40 (n=131)

28.9%Alert3.6%Minor2.4%Major

chance of reaching each level within 24h · from 83 past readings in this state (level only)

Nawalapitiya

Normal

3.10m

▲ 0.15 m/h · Alert in ~3h at this rate · +0.74 in 24h

0.40 m below Alert · higher than 96.5% of its history

Alert 3.5Minor 5Major 6

19 Sep 00:30 → 24 Sep 12:30 SLST · shaded: usually, this time of year 1.05–2.53 m, median 1.43 (n=131)

16.7%Alert8.3%Minor2.1%Major

chance of reaching each level within 24h · from 48 past readings in this state (level only)

Kotmale reservoir 57% full (+2.0 pts vs previous report) · 689.41 m asl · 13.6 m below FSL 703.0 · read 2026-09-23

Trend chart appears once there are 5 daily readings — 2 so far. Capture began 2026-09-22; the source publishes once a day and keeps no history.

Station	Level	Alert		Next level, 24h
Panadugama	6.69 m ▲	5	Minor flood	8.2% Major · n=122
Tawalama	5.33 m ▲	4	Alert	18.7% Minor · n=134
Baddegama	4.31 m ▲	3.5	Minor flood	16.4% Major · n=134
Magura	4.81 m ▲	4	Alert	15.6% Minor · n=109
Pitabeddara	4.61 m ▼	4	Alert	31.6% Minor · n=57
Ratnapura	5.94 m ▲	5.2	Alert	27.5% Minor · n=40
Thalgahagoda	1.55 m	1.4	Alert	62.5% Minor · n=542

Station

Level

Alert

Next level, 24h

Panadugama

6.69 m ▲

Minor flood

8.2% Major · n=122

Tawalama

5.33 m ▲

Alert

18.7% Minor · n=134

Baddegama

4.31 m ▲

3.5

Minor flood

16.4% Major · n=134

Magura

4.81 m ▲

Alert

15.6% Minor · n=109

Pitabeddara

4.61 m ▼

Alert

31.6% Minor · n=57

Ratnapura

5.94 m ▲

5.2

Alert

27.5% Minor · n=40

Thalgahagoda

1.55 m

1.4

Alert

62.5% Minor · n=542

Station	Level	Alert		Next level, 24h
Panadugama	6.69 m ▲	5	Minor flood	8.2% Major · n=122
Tawalama	5.33 m ▲	4	Alert	18.7% Minor · n=134
Baddegama	4.31 m ▲	3.5	Minor flood	16.4% Major · n=134
Magura	4.81 m ▲	4	Alert	15.6% Minor · n=109
Pitabeddara	4.61 m ▼	4	Alert	31.6% Minor · n=57
Ratnapura	5.94 m ▲	5.2	Alert	27.5% Minor · n=40
Thalgahagoda	1.55 m	1.4	Alert	62.5% Minor · n=542
Urawa	2.44 m ▼	2.5	Normal	11.1% Alert · n=45
Kithulgala	2.73 m ▲	3	Normal	25% Alert · n=32
Glencourse	13.29 m ▲	15	Normal	4.4% Alert · n=91
Norwood	1.32 m ▲	1.5	Normal	19.8% Alert · n=101
Putupaula	2.60 m	3	Normal	6.6% Alert · n=227
Dunamale	2.66 m ▲	3.3	Normal	35.1% Alert · n=208
Ellagawa	7.94 m ▲	10	Normal	2.7% Alert · n=111
Hanwella	4.90 m ▲	6.5	Normal	3.9% Alert · n=51
N' Street	2.90 ft ▲	4	Normal	4.4% Alert · n=114
Holombuwa	2.08 m ▲	3	Normal	14.5% Alert · n=152
Deraniyagala	2.97 m ▲	4.8	Normal	18.2% Alert · n=55
Badalgama	2.77 m ▲	5	Normal	2.4% Alert · n=41
Moraketiya	1.39 m ▼	3	Normal	1.1% Alert · n=90
Giriulla	1.81 m ▲	5.5	Normal	1.6% Alert · n=64
Horowpothana	1.64 m	6	Normal	<1% Alert · n=530
Thanamalwila	1.09 m	4	Normal	0.2% Alert · n=573
Wellawaya	0.91 m	4.4	Normal	<0% Alert · n=677
Kuda Oya	1.02 m	6.9	Normal	<0% Alert · n=702
Nakkala	0.54 m	5	Normal	0.2% Alert · n=656
Yaka Wewa	0.41 m	4	Normal	0.5% Alert · n=641
Thanthirimale	0.42 m	5	Normal	<1% Alert · n=272
Moragaswewa	0.39 m	4.75	Normal	2.4% Alert · n=334
Thaldena	0.14 m ▼	3	Normal	0.2% Alert · n=614
Siyambalanduwa	0.14 m	4.5	Normal	<0% Alert · n=666
Padiyathalawa	0.08 m	4	Normal	0.3% Alert · n=648
Galgamuwa	0.03 m	4.84	Normal	<1% Alert · n=223
Katharagama	-0.24 m	4	Normal	—
Manampitiya	-0.23 m	3	Normal	—
Weraganthota	-3.16 m ▼	5	Normal	—

Station

Level

Alert

Next level, 24h

Panadugama

6.69 m ▲

Minor flood

8.2% Major · n=122

Tawalama

5.33 m ▲

Alert

18.7% Minor · n=134

Baddegama

4.31 m ▲

3.5

Minor flood

16.4% Major · n=134

Magura

4.81 m ▲

Alert

15.6% Minor · n=109

Pitabeddara

4.61 m ▼

Alert

31.6% Minor · n=57

Ratnapura

5.94 m ▲

5.2

Alert

27.5% Minor · n=40

Thalgahagoda

1.55 m

1.4

Alert

62.5% Minor · n=542

Urawa

2.44 m ▼

2.5

Normal

11.1% Alert · n=45

Kithulgala

2.73 m ▲

Normal

25% Alert · n=32

Glencourse

13.29 m ▲

Normal

4.4% Alert · n=91

Norwood

1.32 m ▲

1.5

Normal

19.8% Alert · n=101

Putupaula

2.60 m

Normal

6.6% Alert · n=227

Dunamale

2.66 m ▲

3.3

Normal

35.1% Alert · n=208

Ellagawa

7.94 m ▲

Normal

2.7% Alert · n=111

Hanwella

4.90 m ▲

6.5

Normal

3.9% Alert · n=51

N' Street

2.90 ft ▲

Normal

4.4% Alert · n=114

Holombuwa

2.08 m ▲

Normal

14.5% Alert · n=152

Deraniyagala

2.97 m ▲

4.8

Normal

18.2% Alert · n=55

Badalgama

2.77 m ▲

Normal

2.4% Alert · n=41

Moraketiya

1.39 m ▼

Normal

1.1% Alert · n=90

Giriulla

1.81 m ▲

5.5

Normal

1.6% Alert · n=64

Horowpothana

1.64 m

Normal

<1% Alert · n=530

Thanamalwila

1.09 m

Normal

0.2% Alert · n=573

Wellawaya

0.91 m

4.4

Normal

<0% Alert · n=677

Kuda Oya

1.02 m

6.9

Normal

<0% Alert · n=702

Nakkala

0.54 m

Normal

0.2% Alert · n=656

Yaka Wewa

0.41 m

Normal

0.5% Alert · n=641

Thanthirimale

0.42 m

Normal

<1% Alert · n=272

Moragaswewa

0.39 m

4.75

Normal

2.4% Alert · n=334

Thaldena

0.14 m ▼

Normal

0.2% Alert · n=614

Siyambalanduwa

0.14 m

4.5

Normal

<0% Alert · n=666

Padiyathalawa

0.08 m

Normal

0.3% Alert · n=648

Galgamuwa

0.03 m

4.84

Normal

<1% Alert · n=223

Katharagama

-0.24 m

Normal

—

Manampitiya

-0.23 m

Normal

—

Weraganthota

-3.16 m ▼

Normal

—

Closest to their thresholds