Mahaweli flood watch

Peradeniya · Nawalapitiya · Kotmale reservoir — the upper Mahaweli

Updated
2026-09-24 00:30 SLST
1h ago

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

watch

4.02m

▲ 0.14 m/h · Alert in ~7h at this rate · +0.24 in 24h

0.98 m below Alert · higher than 88.4% of its history

Alert 5Minor 7Major 9

19 Sep 00:30 → 24 Sep 00:30 SLST

29.3%Alert3.7%Minor2.4%Major

chance of reaching each level within 24h · from 82 past readings in this state (level only)

Nawalapitiya

calm

2.53m

▲ 0.01 m/h · +0.13 in 24h

0.97 m below Alert · higher than 92.8% of its history

Alert 3.5Minor 5Major 6

19 Sep 00:30 → 24 Sep 00:30 SLST

5.6%Alert1.4%Minor<2%Major

chance of reaching each level within 24h · from 142 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		24h Alert risk
Baddegama	3.65 m ▼	3.5	alert	97.7% n=429
Tawalama	4.03 m ▲	4	alert	73.1% n=130
Magura	3.90 m ▼	4	watch	35.9% n=270
Thalgahagoda	1.36 m ▲	1.4	watch	15.3% n=124
Panadugama	4.61 m ▲	5	watch	59.5% n=37
Putupaula	2.72 m ▼	3	watch	6.7% n=225
Glencourse	12.68 m	15	watch	10% n=40
Ratnapura	4.32 m ▲	5.2	watch	17% n=300

Station

Level

Alert

24h Alert risk

Baddegama

3.65 m ▼

3.5

alert

97.7% n=429

Tawalama

4.03 m ▲

alert

73.1% n=130

Magura

3.90 m ▼

watch

35.9% n=270

Thalgahagoda

1.36 m ▲

1.4

watch

15.3% n=124

Panadugama

4.61 m ▲

watch

59.5% n=37

Putupaula

2.72 m ▼

watch

6.7% n=225

Glencourse

12.68 m

watch

10% n=40

Ratnapura

4.32 m ▲

5.2

watch

17% n=300

Station	Level	Alert		24h Alert risk
Baddegama	3.65 m ▼	3.5	alert	97.7% n=429
Tawalama	4.03 m ▲	4	alert	73.1% n=130
Magura	3.90 m ▼	4	watch	35.9% n=270
Thalgahagoda	1.36 m ▲	1.4	watch	15.3% n=124
Panadugama	4.61 m ▲	5	watch	59.5% n=37
Putupaula	2.72 m ▼	3	watch	6.7% n=225
Glencourse	12.68 m	15	watch	10% n=40
Ratnapura	4.32 m ▲	5.2	watch	17% n=300
Kithulgala	2.40 m ▲	3	calm	3% n=235
Urawa	1.99 m ▲	2.5	calm	9.6% n=135
Ellagawa	7.80 m ▼	10	calm	<3% n=91
Dunamale	2.44 m ▼	3.3	calm	8.9% n=79
Hanwella	4.57 m ▼	6.5	calm	1.1% n=190
Norwood	1.05 m ▲	1.5	calm	4.7% n=427
N' Street	2.70 ft ▼	4	calm	7.9% n=38
Holombuwa	1.76 m ▲	3	calm	10% n=60
Badalgama	2.59 m ▼	5	calm	0.9% n=345
Pitabeddara	1.98 m ▲	4	calm	1.7% n=58
Deraniyagala	1.83 m ▲	4.8	calm	0.7% n=569
Horowpothana	1.66 m	6	calm	<1% n=527
Thanamalwila	1.10 m	4	calm	0.2% n=570
Moraketiya	0.81 m	3	calm	0.2% n=512
Giriulla	1.39 m ▼	5.5	calm	0.2% n=463
Wellawaya	0.94 m	4.4	calm	<0% n=674
Kuda Oya	1.00 m	6.9	calm	<0% n=699
Nakkala	0.54 m	5	calm	0.2% n=653
Yaka Wewa	0.41 m	4	calm	0.5% n=639
Moragaswewa	0.39 m	4.75	calm	2.4% n=331
Thaldena	0.14 m	3	calm	0.2% n=611
Siyambalanduwa	0.14 m	4.5	calm	<0% n=663
Padiyathalawa	0.08 m	4	calm	0.3% n=645
Katharagama	-0.25 m	4	calm	—
Manampitiya	-0.26 m	3	calm	—

Station

Level

Alert

24h Alert risk

Baddegama

3.65 m ▼

3.5

alert

97.7% n=429

Tawalama

4.03 m ▲

alert

73.1% n=130

Magura

3.90 m ▼

watch

35.9% n=270

Thalgahagoda

1.36 m ▲

1.4

watch

15.3% n=124

Panadugama

4.61 m ▲

watch

59.5% n=37

Putupaula

2.72 m ▼

watch

6.7% n=225

Glencourse

12.68 m

watch

10% n=40

Ratnapura

4.32 m ▲

5.2

watch

17% n=300

Kithulgala

2.40 m ▲

calm

3% n=235

Urawa

1.99 m ▲

2.5

calm

9.6% n=135

Ellagawa

7.80 m ▼

calm

<3% n=91

Dunamale

2.44 m ▼

3.3

calm

8.9% n=79

Hanwella

4.57 m ▼

6.5

calm

1.1% n=190

Norwood

1.05 m ▲

1.5

calm

4.7% n=427

N' Street

2.70 ft ▼

calm

7.9% n=38

Holombuwa

1.76 m ▲

calm

10% n=60

Badalgama

2.59 m ▼

calm

0.9% n=345

Pitabeddara

1.98 m ▲

calm

1.7% n=58

Deraniyagala

1.83 m ▲

4.8

calm

0.7% n=569

Horowpothana

1.66 m

calm

<1% n=527

Thanamalwila

1.10 m

calm

0.2% n=570

Moraketiya

0.81 m

calm

0.2% n=512

Giriulla

1.39 m ▼

5.5

calm

0.2% n=463

Wellawaya

0.94 m

4.4

calm

<0% n=674

Kuda Oya

1.00 m

6.9

calm

<0% n=699

Nakkala

0.54 m

calm

0.2% n=653

Yaka Wewa

0.41 m

calm

0.5% n=639

Moragaswewa

0.39 m

4.75

calm

2.4% n=331

Thaldena

0.14 m

calm

0.2% n=611

Siyambalanduwa

0.14 m

4.5

calm

<0% n=663

Padiyathalawa

0.08 m

calm

0.3% n=645

Katharagama

-0.25 m

calm

—

Manampitiya

-0.26 m

calm

—

Mahaweli flood watch

Other stations near or above Alert