Leaving
Level 1 · WatchTue 10 Nov
Watch on 94 km between Imaduwa and Hali-Ela
Around Wellawaya and Ella, km 85–102, km 108–119, km 274–344.
1.1 km of this route can't be matched to a DS division, so there is no warning data for it. Check the bulletin for that area yourself.
You reach it about Tue 10:35, 1 h 10 min after leaving, and are through it by Tue 14:55.
NBRI’s bulletin is valid until Tue 20:00, so it covers that time.
NBRI’s advice, as issued
Since the rainfall within the past 24 hours has exceeded 75mm, if the rain continues, be watchful on the possibility of landslides, slope failures, rock falls, cutting failures and ground subsidence.
NBRI, issued Mon 9 Nov, 20:00 · valid to Tue 10 Nov, 20:00lankawatch.org
Your road · 357 km~5 h 50 min
NBRI WatchNot listedOutside NBRI areaNo current dataRiver crossingRain gaugeNo report
- BIA Airport (Katunayake)
Not listedkm 0–4 - Katunayake
Not on our map: no warning datakm 4–5 - Kaduwela
Not listedkm 5–86 - Watchkm 86–101
- Not listedkm 101–108
- Watchkm 108–118
- Imaduwa to Thihagoda
Not listedkm 118–191 - Outside NBRI’s landslide area: the bulletin says nothing herekm 191–229
- Not listedkm 229–231
- Outside NBRI’s landslide area: the bulletin says nothing herekm 231–270
- Not listedkm 270–275
- Wellawaya to Ella
Watchkm 275–344 - Hali-Ela to Badulla
Not listedkm 344–357
LandslideWatch3 stretches · NBRI’s adviceRainModerate rain, up to 14.7 mm in 24 hLast 3 days, satellite: About 1–2 days a month are this wet hereWeatherNo advisory for this roadRivers43 crossingsBaddegama: Minor flood level · rising · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kalu Ganga: Rare here (1–2 days a month)
Level 2 · AlertTue 10 Nov
Alert on 17 km between Hunnasgiriya and Ududumbara
Around Hunnasgiriya and Ududumbara, km 148–165.
Also: Watch on 40 km between Galagedara and Meegahakiula
You reach it about Tue 12:40, 3 h 10 min after leaving, and are through it by Tue 13:10.
NBRI’s bulletin is valid until Tue 20:00, so it covers that time.
NBRI’s advice, as issued
Since the rainfall within the past 24 hours has exceeded 100 mm, if the rains continue, be on alert on the possibility of landslides, slope failures, rock falls, cut failures and ground subsidence, being ready to evacuate to a safe location if the need arises.
NBRI, issued Mon 9 Nov, 20:00 · valid to Tue 10 Nov, 20:00lankawatch.org
Your road · 235 km~5 h 50 min
NBRI AlertNBRI WatchNot listedRiver crossingRain gaugeNo report
- BIA Airport (Katunayake) to Mawathagama
Not listedkm 0–93 - Galagedara
Watchkm 93–100 - Hedeniya to Medamahanuwara
Not listedkm 100–148 - Hunnasgiriya to Ududumbara
Alertkm 148–165 - between Ududumbara and Mahiyanganaya
Watchkm 165–182 - Mahiyanganaya
Not listedkm 182–203 - Meegahakiula
Watchkm 203–219 - Badulla
Not listedkm 219–235
LandslideAlert5 stretches · NBRI’s adviceRainModerate rain, up to 18.4 mm in 24 hLast 3 days, satellite: About 1–2 days a month are this wet hereWeatherShowers or thundershowers after 1.00p.mKandy 30° / 24°Rivers25 crossingsGiriulla: Below Alert · falling · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Level 1 · WatchTue 10 Nov
Watch on 99 km between Pasyala and Kothmale
Around Warakapola and Kegalle, km 41–45, km 48–61, km 65–75 and 1 more.
You reach it about Tue 10:30, 1 h after leaving, and are through it by Tue 13:45.
NBRI’s bulletin is valid until Tue 20:00, so it covers that time.
NBRI’s advice, as issued
Since the rainfall within the past 24 hours has exceeded 75mm, if the rain continues, be watchful on the possibility of landslides, slope failures, rock falls, cutting failures and ground subsidence.
NBRI, issued Mon 9 Nov, 20:00 · valid to Tue 10 Nov, 20:00lankawatch.org
Your road · 219 km~6 h 10 min
NBRI WatchNot listedRiver crossingRain gaugeNo report
- BIA Airport (Katunayake) to Pasyala
Not listedkm 0–48 - Warakapola
Watchkm 48–60 - between Warakapola and Kegalle
Not listedkm 60–66 - Kegalle
Watchkm 66–75 - near Kegalle
Not listedkm 75–80 - Gampola to Kothmale
Watchkm 80–155 - Welimada to Badulla
Not listedkm 155–219
LandslideWatch4 stretches · NBRI’s adviceRainModerate rain, up to 37.4 mm in 24 hLast 3 days, satellite: About 1–2 days a month are this wet hereWeatherShowers or thundershowers after 1.00p.mNuwara Eliya 22° / 13°Rivers16 crossingsPeradeniya: Below Alert · falling · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Next update usually today by 17:45.
Before you go
We don’t know about road closures or damage. Be cautious on the way, especially in the hills in rain.
About the BIA Airport (Katunayake)–Badulla road
The fastest road we know from BIA Airport (Katunayake) to Badulla is 357 km, about 5 h 50 min, via Kaduwela, Wellawaya.
Main roads on it: Southern Expressway (201 km), Hambantota-Wellawaya Road (45 km), Wellawaya-Ella-Kumbalwela Road (30 km).
We show 3 roads between them, fastest first.
DS divisions on this road
It passes through 42 DS divisions in 9 districts, in travel order:
- Katana
- Ja-Ela
- Wattala
- Mahara
- Biyagama
- Kaduwela
- Maharagama
- Homagama
- Horana
- Bandaragama
- Millaniya
- Kalutara
- Dodangoda
- Mathugama
- Walallavita
- Benthota
- Karandeniya
- Elpitiya
- Welivitiya-Divithura
- Baddegama
- Bope-Poddala
- Akmeemana
- Imaduwa
- Welipitiya
- Malimbada
- Thihagoda
- Devinuwara
- Kirinda Puhulwella
- Beliatta
- Tangalle
- Weeraketiya
- Angunakolapelessa
- Ambalantota
- Embilipitiya
- Sooriyawewa
- Hambantota
- Lunugamvehera
- Thanamalvila
- Wellawaya
- Ella
- Hali-Ela
- Badulla
Past NBRI bulletins
Most often listed on this road, in the 41 NBRI bulletins we have passed on since Sun 20 Sept: Walallavita (19), Elpitiya (11), Karandeniya (11).
A record of past bulletins, not a forecast. Not being listed doesn’t mean safe.
Steep terrain
About 13 km of it runs through steep terrain (slopes over 30° beside the road). The longest stretch is near Ella.
Terrain beside the road, from a satellite elevation model: not the road’s gradient and not a landslide hazard rating.
How to read this
- Not an official service. NBRI’s warnings are passed on as issued.
- Rain levels compare each division with its own satellite record since 2000. Satellites can miss heavy local downpours.
- Gauge sources: Department of Meteorology and Irrigation Department gauge readings, passed on as published. Met gauge sites are approximate. Compared with each division's own satellite record since 2000. This is not a warning and does not replace NBRI's levels. Satellites can miss heavy local downpours, so it never means a road is safe. Satellite data up to 10 Nov, 03:30. Checked Tue 10 Nov, 09:30.
Was this page useful?Thanks, noted.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Mathugama | Watch | 86 |
| Walallavita | Watch | 94 |
| Karandeniya | Watch | 108 |
| Elpitiya | Watch | 109 |
| Wellawaya | Watch | 275 |
| Ella | Watch | 321 |
Rain on route
×Moderate rain, up to 14.7 mm in 24 h
Rain gauges near your route
123456789101112131415161718192021222324252627282930
0357 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Katunayake, 14.7 mm, moderate rain
- 3 Hanwella, 3 mm, light rain
- 5 Ratmalana, 14.6 mm, moderate rain
- 7 Putupaula, ≥ 1.5 mm, light rain or more (incomplete day)
- 12 Baddegama, ≥ 44.6 mm, moderate rain or more (incomplete day)
- 15 Galle, 0.7 mm, dry
- 20 Moraketiya, ≥ 12.1 mm, moderate rain or more (incomplete day)
- 21 Mattala, 12.2 mm, moderate rain
- 24 Wellawaya, ≥ 8.5 mm, light rain or more (incomplete day)
- 30 Badulla, 12.1 mm, moderate rain
20 gauges not reporting.
Gauge coverage: most of the route.
NBRI's warning stays in force after rain eases.
Satellite estimate
- Last 3 days: among the wettest 5% of 3-day periods since 2000 in Homagama, Horana, Millaniya, Dodangoda +7.
Rain outlook (computer model) · Next day: Chance of a rare wet day
- Next day: a chance of a wet day of the kind that comes about 1–2 days a month in Embilipitiya, Sooriyawewa, Hambantota, Lunugamvehera +5 (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 11 Nov, 05:30)
- Next 3 days: a chance of a wet day of the kind that comes about 1–2 days a month in Katana, Weeraketiya, Angunakolapelessa, Ambalantota +9 (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 13 Nov, 05:30)
- "Not signalled" never means dry or safe. This is a computer model, not a warning, and it never changes NBRI's levels. Like the satellite, it reads hill-country rain low and can miss heavy local downpours.
- ECMWF ensemble forecast (open data, CC BY 4.0), run 9 Nov, 17:30, compared with each division's own satellite record.
Weather forecast (Met Dept)
×No advisory for this road
- No Department of Meteorology advisory is in force for Gampaha, Colombo, Kalutara, Galle, Matara, Hambantota, Ratnapura, Moneragala and Badulla.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Ratnapura, Colombo, Gampaha, Kalutara, Badulla, Moneragala, Galle and Matara on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
- Covers Galle, Hambantota and Matara on this road: Showers may occur in the coastal areas of the Southern Province during the morning.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Covers Ratnapura, Colombo, Gampaha, Kalutara, Badulla, Moneragala, Galle and Matara on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts during the early hours of the morning.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments
×Crosses 35 named rivers · 19 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kalu Ganga: Rare here (1–2 days a month) · Minor flood level
Attanagala Oya · Kelani Ganga · Bolgoda Ganga …
BaddegamaMinor flood level · River level 4.18 mDepartment’s thresholds: Alert 3.5, minor flood 4, major flood 5 m
River basins along this road
- km 0–12 · Attanagala Oya basin
- km 12–44 · Kelani Ganga basin
- km 45–71 · Bolgoda Ganga basin
- km 71–84 · Kalu Ganga basin
- km 84–113 · Bentota Ganga basin
- km 113–115 · Madampe Lake basin
- km 115–148 · Gin Ganga basin
- km 148–152 · Koggala Lake basin
- km 152–168 · Polwatta Ganga basin
- km 168–190 · Nilwala Ganga basin
- km 190–196 · Seenimodara Oya basin
- km 196–204 · Kirama Oya basin
- km 204–210 · Rekawa Oya basin
- km 210–218 · Urubokka Ganga basin
- km 218–227 · Kachigal Aru basin
- km 227–245 · Walawe Ganga basin
- km 245–256 · Malala Oya basin
- km 256–335 · Kirindi Oya basin
- km 335–357 · Mahaweli Ganga basin
Satellite rain over these basins
- Kelani Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Kalu Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Bentota Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Madampe Lake basin · Last 3 days: Rare here (1–2 days a month)
- Gin Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Walawe Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Attanagala Oya basin · Last 3 days: Unusual here (3 days a month)
- Bolgoda Ganga basin · Last 3 days: Unusual here (3 days a month)
- Nilwala Ganga basin · Last 3 days: Unusual here (3 days a month)
- Urubokka Ganga basin · Last 3 days: Unusual here (3 days a month)
- Kachigal Aru basin · Last 3 days: Unusual here (3 days a month)
- Mahaweli Ganga basin · Last 3 days: Unusual here (3 days a month)
A whole-basin satellite average against that basin’s own record since 2000, not the area upstream of any one point. Satellites under-read hill rain. Not a warning.
Where this road crosses a river or stream
- km 8 · Dondugam Oya (Attanagala Oya basin) · flows south-west
751 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 12–13 · Old Negombo channel (Kelani Ganga basin) · 3 crossings
0.7 km² drain to this point - km 12 · Ja Ela (Attanagala Oya basin)
4.8 km² drain to this point - km 18 · Old Negombo channel (Kelani Ganga basin)
3.4 km² drain to this point - km 22 · Old Negombo channel (Kelani Ganga basin) · flows south-west
50 km² drain to this point - km 25 · Old Negombo channel (Kelani Ganga basin)
4.3 km² drain to this point - km 36 · Kelani Ganga · flows west
2,126 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Nagalagam Street, an Irrigation Department gauge 13.8 km downstream (2,256 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): no complete 24-hour total (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 09:05.
River level 2.7 ft · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4, minor flood 5, major flood 7 ft) - km 39 · Maha Ela (Kelani Ganga basin) · 2 crossings
15 km² drain to this point - km 52 · Nudun Ela (Bolgoda Ganga basin) · flows south-west
35 km² drain to this point - km 57 · Maha Oya (Bolgoda Ganga basin) · flows west
27 km² drain to this point - km 64 · Panape Ela (Bolgoda Ganga basin)
66 km² drain to this point - km 71 · Keppu Ela (Bolgoda Ganga basin)
0.4 km² drain to this point - km 72 · Kalu Ganga
2,762 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 80 · Iriyangala Ela (Kalu Ganga basin)
9.6 km² drain to this point - km 93 · Welipenne Ganga (Bentota Ganga basin)
131 km² drain to this point - km 101 · Bentota_Gnga (Bentota Ganga basin)
363 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 104 · Uragas Ela (Bentota Ganga basin)
5.2 km² drain to this point - km 127 · Gin Ganga · flows west
681 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Baddegama, an Irrigation Department gauge 2.6 km downstream (709 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 44.6 mm in the 24 hours to 10 Nov, 08:30 (2 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 09:05.
River level 4.18 m · Minor flood level · rising over about 3 hours (Department’s thresholds: Alert 3.5, minor flood 4, major flood 5 m) - km 133 · Keembiya Ela (Gin Ganga basin) · flows north-west
14 km² drain to this point - km 142 · Maha Dola (Gin Ganga basin) · flows west
19 km² drain to this point - km 161 · Polwatta Ganga
166 km² drain to this point · rain over that area, Last 24 hours: Unusual here (3 days a month) - km 176 · Nilwala Ganga · flows south
659 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
Thalgahagoda, an Irrigation Department gauge 2.6 km upstream (655 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): no complete 24-hour total (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 1.65 m · Alert level · steady over about 3 hours (Department’s thresholds: Alert 1.4, minor flood 1.7, major flood 2.8 m) - km 180 · Kanduwela Ela (Nilwala Ganga basin)
35 km² drain to this point - km 195 · Sinimodara Oya · flows east
20 km² drain to this point - km 201 · Kirama Oya · flows east
115 km² drain to this point - km 231 · Walawe Ganga · flows south-east
2,201 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Moraketiya, an Irrigation Department gauge 13.9 km upstream (1,541 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 12.1 mm in the 24 hours to 10 Nov, 08:30 (2 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 09:03.
River level 3.02 m · Alert level · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 5, major flood 7 m) - km 237 · Mahakadawala Ara (Walawe Ganga basin) · flows south-west
23 km² drain to this point - km 237 · Mahaweligada Ara (Walawe Ganga basin) · flows south-west
23 km² drain to this point - km 243 · Maha Ara (Walawe Ganga basin) · flows south-east
0.1 km² drain to this point - km 249 · Malala Oya · flows south
256 km² drain to this point - km 267 · Kirindi Oya · flows south-east
2.0 km² drain to this point
Thanamalwila, an Irrigation Department gauge 9.3 km upstream (696 km² upstream · rain over that area, Last 24 hours: Unusual here (3 days a month)): no complete 24-hour total (4 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 09:06.
River level 2 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4, minor flood 5, major flood 5.5 m) - km 282 · Kuda Oya (Kirindi Oya basin) · flows east
300 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
Kuda Oya, an Irrigation Department gauge 0.5 km upstream (299 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): no complete 24-hour total (2 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 1.85 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 6.9, minor flood 8.4, major flood 8.8 m) - km 297 · Kirindi Oya · flows south
233 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
Wellawaya, an Irrigation Department gauge 6.6 km upstream (179 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): at least 8.5 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 09:03.
River level 1.66 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4.4, minor flood 5.4, major flood 5.9 m) - km 298 · Dambakola Ara (Kirindi Oya basin) · flows south-east
3.1 km² drain to this point - km 300–302 · Kirindi Oya · 3 crossings · flows south
0.1 km² drain to this point
Wellawaya, an Irrigation Department gauge 1.1 km upstream (179 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): at least 8.5 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 09:03.
River level 1.66 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4.4, minor flood 5.4, major flood 5.9 m) - km 305 · Galamola Ara (Kirindi Oya basin) · flows south-east
6.2 km² drain to this point - km 307 · Radapola Oya (Kirindi Oya basin) · flows south-east
16 km² drain to this point - km 310–315 · Kirindi Oya · 4 crossings · flows south-west
89 km² drain to this point
Wellawaya, an Irrigation Department gauge 15.6 km downstream (179 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): at least 8.5 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 09:03.
River level 1.66 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4.4, minor flood 5.4, major flood 5.9 m) - km 313 · Kunapad Ara (Kirindi Oya basin) · flows south
98 km² drain to this point - km 330–333 · Kirindi Oya · 4 crossings · flows east
18 km² drain to this point - km 340–342 · Badulu Oya (Mahaweli Ganga basin) · 3 crossings · flows north
36 km² drain to this point - km 343 · Nawela Oya (Mahaweli Ganga basin) · flows south-west
59 km² drain to this point - km 347–355 · Badulu Oya (Mahaweli Ganga basin) · 6 crossings · flows east
126 km² drain to this point
Thaldena, an Irrigation Department gauge 18.6 km downstream (279 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): 10.2 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 0.87 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 5 m)
And 7 more unnamed streams on our map
Where this road runs beside a river
- km 296–297 · beside the Kirindi Oya
- km 300–301 · beside the Kirindi Oya
- km 330–333 · beside the Kirindi Oya
- km 341–342 · beside the Badulu Oya
Rivers and basins come from our own map of Sri Lanka’s river network. Flow direction, where shown, is worked out from the height of the land. This is orientation only, not a flood warning.
The area draining to a crossing is worked out from a terrain model (about 90 m cells) and is approximate. The rain over it is the satellite average for that same area, against its own record since 2000. Areas under about 150 km² are smaller than the satellite can see, so they show no rain.
River levels are the Irrigation Department’s own readings at its gauge, against its own thresholds. This is not a flood warning: flood warnings come from the Irrigation Department and DMC.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Udadumbara | Alert | 148 |
| Thumpane | Watch | 93 |
| Minipe | Watch | 165 |
| Meegahakivula | Watch | 198 |
Rain on route
×Moderate rain, up to 18.4 mm in 24 h
Rain gauges near your route
123456789101112131415161718192021222324252627282930
0235 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Katunayake, 14.7 mm, moderate rain
- 2 Badalgama, 6 mm, light rain
- 5 Giriulla, ≥ 39.7 mm, moderate rain or more (incomplete day)
- 9 Kurunegala, 18.4 mm, moderate rain
- 15 Katugastota, 1.2 mm, light rain
- 26 Rantambe, 7.8 mm, light rain
- 28 Thaldena, 10.2 mm, moderate rain
- 30 Badulla, 12.1 mm, moderate rain
22 gauges not reporting.
Gauge coverage: most of the route.
NBRI's warning stays in force after rain eases.
Satellite estimate
- Last 3 days: among the wettest 5% of 3-day periods since 2000 in Polgahawela, Weerambugedara, Kurunegala, Mallawapitiya +8.
Rain outlook (computer model) · Next day: Chance of a rare wet day
- Next day: a chance of a wet day of the kind that comes about 1–2 days a month in Mirigama, Alawwa, Narammala, Polgahawela +19 (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 11 Nov, 05:30)
- Next 3 days: a chance of a wet day of the kind that comes about 1–2 days a month in Katana, Minuwangoda, Divulapitiya, Mirigama +22 (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 13 Nov, 05:30)
- "Not signalled" never means dry or safe. This is a computer model, not a warning, and it never changes NBRI's levels. Like the satellite, it reads hill-country rain low and can miss heavy local downpours.
- ECMWF ensemble forecast (open data, CC BY 4.0), run 9 Nov, 17:30, compared with each division's own satellite record.
Weather forecast (Met Dept)
×No advisory for this road
- No Department of Meteorology advisory is in force for Gampaha, Kurunegala, Kandy and Badulla.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Kandy, Gampaha and Badulla on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
- Showers may occur in the coastal areas of the Southern Province during the morning.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Covers Kandy, Gampaha, Badulla and Kurunegala on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts during the early hours of the morning.
- Forecast for the main cities, Tuesday, 10 November 2026 (issued 9 Nov, 16:00)
- Kandy: Showers or thundershowers after 1.00p.m. Max 30°C, min 24°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments
×Crosses 23 named rivers · 4 basins · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Attanagala Oya · Maha Oya · Deduru Oya …
GiriullaBelow Alert · River level 2.74 mDepartment’s thresholds: Alert 5.5, minor flood 6.5, major flood 7.5 m
River basins along this road
- km 0–14 · Attanagala Oya basin
- km 15–30 · Maha Oya basin
- km 30–36 · Attanagala Oya basin
- km 36–61 · Maha Oya basin
- km 61–78 · Deduru Oya basin
- km 78–83 · Maha Oya basin
- km 83–99 · Deduru Oya basin
- km 99–235 · Mahaweli Ganga basin
Satellite rain over these basins
- Attanagala Oya basin · Last 3 days: Unusual here (3 days a month)
- Maha Oya basin · Last 3 days: Unusual here (3 days a month)
- Deduru Oya basin · Last 3 days: Unusual here (3 days a month)
- Mahaweli Ganga basin · Last 3 days: Unusual here (3 days a month)
A whole-basin satellite average against that basin’s own record since 2000, not the area upstream of any one point. Satellites under-read hill rain. Not a warning.
Where this road crosses a river or stream
- km 3 · Krmbulapitiya Oya (Attanagala Oya basin)
101 km² drain to this point - km 23 · Kuda Oya (Maha Oya basin) · flows north
8.1 km² drain to this point - km 39 · Maha Oya · flows north-west
912 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Giriulla, an Irrigation Department gauge 5.8 km downstream (1,145 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 39.7 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 09:03.
River level 2.74 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5.5, minor flood 6.5, major flood 7.5 m) - km 43–44 · Kuda Oya (Maha Oya basin) · 2 crossings · flows south-east
199 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 46 · Midella Ela (Maha Oya basin)
132 km² drain to this point - km 51–52 · Meda Ela (Maha Oya basin) · 2 crossings · flows north
58 km² drain to this point - km 58–59 · Gondara Ela (Maha Oya basin) · 2 crossings · flows south
4.2 km² drain to this point - km 64 · Rekawa Ela (Deduru Oya basin) · flows west
15 km² drain to this point - km 72 · Magur Oya (Deduru Oya basin) · flows north-west
1.3 km² drain to this point - km 74 · Getuwana Ela (Deduru Oya basin) · flows north
0.3 km² drain to this point - km 85 · Kaspatu Oya (Deduru Oya basin) · flows north-west
41 km² drain to this point - km 92–97 · Dik Oya (Deduru Oya basin) · 4 crossings · flows north-west
2.2 km² drain to this point - km 93 · Narankaha Ela (Deduru Oya basin) · flows south-west
16 km² drain to this point - km 110 · Mahaweli Ganga · flows east
1,304 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 10.1 km upstream (1,143 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 16 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 09:01.
River level 3.55 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 7, major flood 9 m) - km 128 · Huliu Ganga (Mahaweli Ganga basin) · 2 crossings · flows south
131 km² drain to this point - km 150 · Ma Oya (Mahaweli Ganga basin) · flows south
1.9 km² drain to this point - km 153 · Kahatagolla Ela (Mahaweli Ganga basin) · flows south-east
1.8 km² drain to this point - km 162 · Kandekumbra Oya (Mahaweli Ganga basin) · flows north-east
1.0 km² drain to this point - km 176 · Nicatlyadda Oya (Mahaweli Ganga basin) · flows north-west
87 km² drain to this point - km 182 · Mahaweli Ganga · flows north
4,071 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Weraganthota, an Irrigation Department gauge 2.5 km upstream (4,059 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): no complete 24-hour total (11 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 09:01.
River level -2.44 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 6, major flood 8 m) - km 184 · Ridikotaliya Kandura (Mahaweli Ganga basin)
5.8 km² drain to this point - km 187 · Galaweln Kandura (Mahaweli Ganga basin) · flows north-west
22 km² drain to this point - km 187 · Dambarawa Oya (Mahaweli Ganga basin)
22 km² drain to this point - km 197 · Meemul Kandura (Mahaweli Ganga basin) · flows south-west
269 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 219–228 · Badulu Oya (Mahaweli Ganga basin) · 7 crossings · flows north
216 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
Thaldena, an Irrigation Department gauge 8.7 km downstream (279 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): 10.2 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 0.87 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 5 m)
And 7 more unnamed streams on our map
Where this road runs beside a river
- km 43–44 · beside the Kuda Oya
- km 96–97 · beside the Dik Oya
- km 109–110 · beside the Mahaweli Ganga
- km 223–225 · beside the Badulu Oya
Rivers and basins come from our own map of Sri Lanka’s river network. Flow direction, where shown, is worked out from the height of the land. This is orientation only, not a flood warning.
The area draining to a crossing is worked out from a terrain model (about 90 m cells) and is approximate. The rain over it is the satellite average for that same area, against its own record since 2000. Areas under about 150 km² are smaller than the satellite can see, so they show no rain.
River levels are the Irrigation Department’s own readings at its gauge, against its own thresholds. This is not a flood warning: flood warnings come from the Irrigation Department and DMC.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Warakapola | Watch | 42 |
| Kegalle | Watch | 66 |
| Mawanella | Watch | 80 |
| Yatinuwara | Watch | 91 |
| Udunuwara | Watch | 94 |
| Udapalatha | Watch | 105 |
| Kothmale East | Watch | 127 |
Rain on route
×Moderate rain, up to 37.4 mm in 24 h
Rain gauges near your route
123456789101112131415161718192021222324252627
0219 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Katunayake, 14.7 mm, moderate rain
- 2 Dunamale, 37.4 mm, moderate rain
- 18 Nuwara Eliya, 9.4 mm, light rain
- 27 Badulla, 12.1 mm, moderate rain
23 gauges not reporting.
Gauge coverage: most of the route.
NBRI's warning stays in force after rain eases.
Satellite estimate
- Last 3 days: among the wettest 5% of 3-day periods since 2000 in Warakapola, Galigamuwa, Kegalle, Rambukkana +6.
Rain outlook (computer model) · Next day: Chance of a rare wet day
- Next day: a chance of a wet day of the kind that comes about 1–2 days a month in Mirigama, Warakapola, Galigamuwa, Kegalle +10 (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 11 Nov, 05:30)
- Next 3 days: a chance of a wet day of the kind that comes about 1–2 days a month in Katana, Minuwangoda, Attanagalla, Mirigama +13 (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 13 Nov, 05:30)
- "Not signalled" never means dry or safe. This is a computer model, not a warning, and it never changes NBRI's levels. Like the satellite, it reads hill-country rain low and can miss heavy local downpours.
- ECMWF ensemble forecast (open data, CC BY 4.0), run 9 Nov, 17:30, compared with each division's own satellite record.
Weather forecast (Met Dept)
×No advisory for this road
- No Department of Meteorology advisory is in force for Gampaha, Kegalle, Kandy, Nuwara Eliya and Badulla.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Kegalle, Kandy, Nuwara Eliya, Gampaha and Badulla on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
- Showers may occur in the coastal areas of the Southern Province during the morning.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Covers Kegalle, Kandy, Nuwara Eliya, Gampaha and Badulla on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts during the early hours of the morning.
- Forecast for the main cities, Tuesday, 10 November 2026 (issued 9 Nov, 16:00)
- Nuwara Eliya: Showers or thundershowers after 1.00p.m. Max 22°C, min 13°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments
×Crosses 14 named rivers · 3 basins · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Attanagala Oya · Maha Oya · Mahaweli Ganga
PeradeniyaBelow Alert · River level 3.55 mDepartment’s thresholds: Alert 5, minor flood 7, major flood 9 m
River basins along this road
- km 0–48 · Attanagala Oya basin
- km 48–93 · Maha Oya basin
- km 93–97 · Mahaweli Ganga basin
- km 97–103 · Maha Oya basin
- km 103–219 · Mahaweli Ganga basin
Satellite rain over these basins
- Attanagala Oya basin · Last 3 days: Unusual here (3 days a month)
- Maha Oya basin · Last 3 days: Unusual here (3 days a month)
- Mahaweli Ganga basin · Last 3 days: Unusual here (3 days a month)
A whole-basin satellite average against that basin’s own record since 2000, not the area upstream of any one point. Satellites under-read hill rain. Not a warning.
Where this road crosses a river or stream
- km 7 · Dondugam Oya (Attanagala Oya basin) · flows south
739 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 11 · Dondugam Oya (Attanagala Oya basin) · flows north
528 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 28 · Diyaelle Oya (Attanagala Oya basin) · flows west
103 km² drain to this point - km 38 · Diyaelle Oya (Attanagala Oya basin) · flows north-west
21 km² drain to this point - km 50–52 · Kuda Oya (Maha Oya basin) · 2 crossings · flows north
54 km² drain to this point - km 59 · Rogala Oya (Maha Oya basin) · flows north-east
3.6 km² drain to this point - km 60–63 · Galigamuwa Oya (Maha Oya basin) · 2 crossings · flows west
8.5 km² drain to this point - km 83 · Maha Oya · flows west
199 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 85–87 · Hingul Oya (Maha Oya basin) · 3 crossings · flows west
39 km² drain to this point - km 110 · Mahaweli Ganga · flows north-east
900 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 15.4 km downstream (1,143 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 16 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 09:01.
River level 3.55 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 7, major flood 9 m) - km 115–116 · Atabaga Oya (Mahaweli Ganga basin) · 2 crossings · flows south
44 km² drain to this point - km 129 · Gamburu Oya (Mahaweli Ganga basin) · flows south-west
0.3 km² drain to this point - km 154 · Puna Oya (Mahaweli Ganga basin) · flows west
6.8 km² drain to this point - km 188–194 · Dougolla Oya (Mahaweli Ganga basin) · 6 crossings · flows east
190 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 196 · Uma Oya (Mahaweli Ganga basin) · 2 crossings · flows west
369 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 214–217 · Badulu Oya (Mahaweli Ganga basin) · 3 crossings · flows east
126 km² drain to this point
Thaldena, an Irrigation Department gauge 18.6 km downstream (279 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): 10.2 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 0.87 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 5 m)
And 3 more unnamed streams on our map
Where this road runs beside a river
- km 86–87 · beside the Hingul Oya
Rivers and basins come from our own map of Sri Lanka’s river network. Flow direction, where shown, is worked out from the height of the land. This is orientation only, not a flood warning.
The area draining to a crossing is worked out from a terrain model (about 90 m cells) and is approximate. The rain over it is the satellite average for that same area, against its own record since 2000. Areas under about 150 km² are smaller than the satellite can see, so they show no rain.
River levels are the Irrigation Department’s own readings at its gauge, against its own thresholds. This is not a flood warning: flood warnings come from the Irrigation Department and DMC.