Leaving
Level 1 · WatchTue 10 Nov
Watch on 99 km between Pasyala and Kothmale
Around Warakapola and Kegalle, km 36–40, km 42–56, km 60–70 and 1 more.
You reach it about Tue 14:35, 50 min after leaving, and are through it by Tue 17:45.
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 · 199 km~5 h 40 min
NBRI WatchNot listedRiver crossingRain gaugeNo report
- BIA Airport (Katunayake) to Pasyala
Not listedkm 0–43 - Warakapola
Watchkm 43–55 - between Warakapola and Kegalle
Not listedkm 55–61 - Kegalle
Watchkm 61–70 - near Kegalle
Not listedkm 70–74 - Gampola to Kothmale
Watchkm 74–150 - Ohiya (Horton Plains)
Not listedkm 150–199
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 hereWeatherAmber · Thunderstorms Amber Warning (Be Prepared)Nuwara Eliya 22° / 13°Rivers14 crossingsPeradeniya: Below Alert · falling · Walawe Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Level 1 · WatchTue 10 Nov
Watch on 100 km between Ingiriya and Ratnapura
Around Ingiriya and Kiriella, km 75–176.
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 14:50, 1 h 10 min after leaving, and are through it by Tue 18:00.
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 · 241 km~6 h 20 min
NBRI WatchNot listedNo 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 5–76 - Ingiriya to Ratnapura
Watchkm 76–176 - Haldummulla to Ohiya (Horton Plains)
Not listedkm 176–241
LandslideWatch1 stretch · NBRI’s adviceRainFairly heavy rain, up to 93.5 mm in 24 hLast 3 days, satellite: Only a few days a year are this wet here · Last this wet in Kiriella: November 2025WeatherAmber · Thunderstorms Amber Warning (Be Prepared)Ratnapura 33° / 23°Rivers31 crossingsNagalagam Street: Below Alert · rising · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kelani Ganga: Rare here (1–2 days a month)
Level 2 · AlertTue 10 Nov
Alert on 31 km between Puwakpitiya and Ginigathhena
Around Dehiowita and Ginigathhena, km 66–81, km 104–123.
Also: Watch on 74 km between Hanwella and Nawalapitiya
You reach it about Tue 15:10, 1 h 30 min after leaving, and are through it by Tue 16:50.
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 · 226 km~6 h 40 min
NBRI AlertNBRI WatchNot listedRiver crossingRain gaugeNo report
- BIA Airport (Katunayake) to Kaduwela
Not listedkm 0–45 - Hanwella to Puwakpitiya
Watchkm 45–67 - Dehiowita
Alertkm 67–80 - Yatiyantota to Kithulgala
Watchkm 80–105 - Ginigathhena
Alertkm 105–122 - Nawalapitiya
Watchkm 122–150 - Talawakele to Ohiya (Horton Plains)
Not listedkm 150–226
LandslideAlert5 stretches · NBRI’s adviceRainHeavy rain, up to 100.5 mm in 24 hLast 3 days, satellite: Only a few days a year are this wet here · Last this wet in Dehiovita: November 2025WeatherAmber · Thunderstorms Amber Warning (Be Prepared)Nuwara Eliya 22° / 13°Rivers24 crossingsHanwella: Below Alert · falling · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kelani 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)–Ohiya (Horton Plains) road
The fastest road we know from BIA Airport (Katunayake) to Ohiya (Horton Plains) is 199 km, about 5 h 40 min, via Kegalle, Gampola.
Main roads on it: Colombo-Kandy Road (56 km), Nuwara Eliya Road (51 km), Katunayake-Veyangoda Road (23 km).
We show 3 roads between them, fastest first.
DS divisions on this road
It passes through 16 DS divisions in 5 districts, in travel order:
- Katana
- Minuwangoda
- Attanagalla
- Mirigama
- Warakapola
- Galigamuwa
- Kegalle
- Rambukkana
- Mawanella
- Yatinuwara
- Udunuwara
- Udapalatha
- Kothmale East
- Nuwara Eliya
- Welimada
- Haldummulla
Past NBRI bulletins
Most often listed on this road, in the 41 NBRI bulletins we have passed on since Sun 20 Sept: Mawanella (38), Kegalle (31), Warakapola (27).
A record of past bulletins, not a forecast. Not being listed doesn’t mean safe.
Steep terrain
About 12 km of it runs through steep terrain (slopes over 30° beside the road).
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, 08:30. Checked Tue 10 Nov, 13:50.
Was this page useful?Thanks, noted.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Warakapola | Watch | 37 |
| Kegalle | Watch | 61 |
| Mawanella | Watch | 74 |
| Yatinuwara | Watch | 86 |
| Udunuwara | Watch | 89 |
| Udapalatha | Watch | 100 |
| Kothmale East | Watch | 122 |
Rain on route
×Moderate rain, up to 37.4 mm in 24 h
Rain gauges near your route
123456789101112131415161718192021
0199 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Katunayake, 0.8 mm, dry
- 2 Dunamale, 37.4 mm, moderate rain
- 18 Nuwara Eliya, 30.6 mm, moderate rain
18 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 Katana, Minuwangoda, Attanagalla, Mirigama +12 (the wettest 5% of days there; several times the usual chance). (11 Nov, 05:30 to 12 Nov, 05:30)
- Next 3 days: a chance of a wet day of the kind that comes about 1–2 days a month in Warakapola, Galigamuwa, Kegalle, Rambukkana +8 (the wettest 5% of days there; several times the usual chance). (11 Nov, 05:30 to 14 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 10 Nov, 05:30, compared with each division's own satellite record.
Weather forecast (Met Dept)
×Amber · Thunderstorms Amber Warning (Be Prepared)
- Amber · Thunderstorms Amber Warning (Be Prepared). Districts: Ampara, Badulla, Batticaloa, Colombo, Galle, Gampaha, Hambantota, Jaffna, Kalutara, Kandy, Kegalle, Kilinochchi, Mannar, Matale, Matara, Moneragala, Mullaitivu, Nuwara Eliya, Polonnaruwa, Ratnapura, Trincomalee, Vavuniya. Warning Description: There is an increased likelihood of severe lightning associated with thundershowers at several places in the following areas during the evening or night. Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts. Strong gusty winds of 60–70 kmph and very rough sea conditions can be expected temporarily during thundershowers in the sea areas. Action Required: • Stop paddy and plantation work, outdoor sports and construction when storms approach. • Move into a substantial building or an enclosed hard-topped vehicle; do not shelter under trees, open huts, tents or bus halts. • Avoid open fields, hilltops, beaches, tanks, rivers and other water bodies. • Fishermen and small-boat operators should not go to sea and should return to shore early. • Avoid bathing, using wired phones and handling electrical appliances during thunder. • Avoid travelling on tree-lined roads and through flooded roads. • Follow flood warnings and landslide warnings. • Protect livestock, crops and property, and be ready to move to a safe shelter if advised. Damage Expected: • Widespread thunderstorms with frequent lightning, strong gusty winds and heavy rain. • Risk of injury or death for people in open areas such as paddy fields, plantations, playgrounds, beaches, and for people on boats. • Trees uprooted and damage to roofs of non-engineered houses, including tin and thatched roofs. • Localized flash floods and slope failures in vulnerable areas. • Power and communication interruptions and damage to electrical equipment. • Damage to crops, plantations and livestock. • Dangerous conditions for small fishing boats and craft. • Disruption to road, rail and air transport. Issued 10 Nov, 12:45 · Valid until 11 Nov, 01:00.
- 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 13 named rivers · 4 basins · Walawe Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Attanagala Oya · Maha Oya · Mahaweli Ganga …
PeradeniyaBelow Alert · River level 3.15 mDepartment’s thresholds: Alert 5, minor flood 7, major flood 9 m
River basins along this road
- km 0–43 · Attanagala Oya basin
- km 43–88 · Maha Oya basin
- km 88–92 · Mahaweli Ganga basin
- km 92–98 · Maha Oya basin
- km 98–188 · Mahaweli Ganga basin
- km 188–194 · Walawe Ganga basin
- km 194–199 · Mahaweli Ganga basin
Satellite rain over these basins
- 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)
- 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 3 · Krmbulapitiya Oya (Attanagala Oya basin)
101 km² drain to this point - km 23 · Diyaelle Oya (Attanagala Oya basin) · flows west
103 km² drain to this point - km 33 · Diyaelle Oya (Attanagala Oya basin) · flows north-west
21 km² drain to this point - km 44–47 · Kuda Oya (Maha Oya basin) · 2 crossings · flows north
54 km² drain to this point - km 54 · Rogala Oya (Maha Oya basin) · flows north-east
3.6 km² drain to this point - km 55–58 · Galigamuwa Oya (Maha Oya basin) · 2 crossings · flows west
8.5 km² drain to this point - km 78 · 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 80–82 · Hingul Oya (Maha Oya basin) · 3 crossings · flows west
39 km² drain to this point - km 105 · 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, 13:02.
River level 3.15 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 7, major flood 9 m) - km 110–111 · Atabaga Oya (Mahaweli Ganga basin) · 2 crossings · flows south
44 km² drain to this point - km 124 · Gamburu Oya (Mahaweli Ganga basin) · flows south-west
0.3 km² drain to this point - km 149 · Puna Oya (Mahaweli Ganga basin) · flows west
6.8 km² drain to this point - km 162 · Nanu Oya (Mahaweli Ganga basin) · flows west
6.0 km² drain to this point - km 198 · Ellatotakanda Oya (Mahaweli Ganga basin) · flows north-east
0.4 km² drain to this point
And 4 more unnamed streams on our map
Where this road runs beside a river
- km 81–82 · 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.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Ingiriya | Watch | 76 |
| Kiriella | Watch | 88 |
| Ratnapura | Watch | 114 |
| Balangoda | Watch | 159 |
Rain on route
×Fairly heavy rain, up to 93.5 mm in 24 h
Rain gauges near your route
12345678910111213141516171819202122
0241 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Katunayake, 0.8 mm, dry
- 3 Hanwella, 3 mm, light rain
- 5 Ratmalana, trace, dry
- 8 Ellagawa, 93.4 mm, fairly heavy rain
- 9 Kiriella, 93.5 mm, fairly heavy rain
- 12 Ratnapura, 20.9 mm, moderate rain
- 19 Samanala Wawa, 21 mm, moderate rain
15 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 1% of 3-day periods since 2000 in Kiriella.
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 Katana, Ja-Ela, Mahara, Biyagama +12 (the wettest 5% of days there; several times the usual chance). (11 Nov, 05:30 to 12 Nov, 05:30)
- Next 3 days: a chance of a wet day of the kind that comes about 1–2 days a month in Maharagama, Homagama, Horana, Bandaragama +6 (the wettest 5% of days there; several times the usual chance). (11 Nov, 05:30 to 14 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 10 Nov, 05:30, compared with each division's own satellite record.
Weather forecast (Met Dept)
×Amber · Thunderstorms Amber Warning (Be Prepared)
- Amber · Thunderstorms Amber Warning (Be Prepared). Districts: Ampara, Badulla, Batticaloa, Colombo, Galle, Gampaha, Hambantota, Jaffna, Kalutara, Kandy, Kegalle, Kilinochchi, Mannar, Matale, Matara, Moneragala, Mullaitivu, Nuwara Eliya, Polonnaruwa, Ratnapura, Trincomalee, Vavuniya. Warning Description: There is an increased likelihood of severe lightning associated with thundershowers at several places in the following areas during the evening or night. Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts. Strong gusty winds of 60–70 kmph and very rough sea conditions can be expected temporarily during thundershowers in the sea areas. Action Required: • Stop paddy and plantation work, outdoor sports and construction when storms approach. • Move into a substantial building or an enclosed hard-topped vehicle; do not shelter under trees, open huts, tents or bus halts. • Avoid open fields, hilltops, beaches, tanks, rivers and other water bodies. • Fishermen and small-boat operators should not go to sea and should return to shore early. • Avoid bathing, using wired phones and handling electrical appliances during thunder. • Avoid travelling on tree-lined roads and through flooded roads. • Follow flood warnings and landslide warnings. • Protect livestock, crops and property, and be ready to move to a safe shelter if advised. Damage Expected: • Widespread thunderstorms with frequent lightning, strong gusty winds and heavy rain. • Risk of injury or death for people in open areas such as paddy fields, plantations, playgrounds, beaches, and for people on boats. • Trees uprooted and damage to roofs of non-engineered houses, including tin and thatched roofs. • Localized flash floods and slope failures in vulnerable areas. • Power and communication interruptions and damage to electrical equipment. • Damage to crops, plantations and livestock. • Dangerous conditions for small fishing boats and craft. • Disruption to road, rail and air transport. Issued 10 Nov, 12:45 · Valid until 11 Nov, 01:00.
- 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 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 Ratnapura, Colombo, Gampaha, Kalutara 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)
- Ratnapura: Showers or thundershowers after 1.00p.m. Max 33°C, min 23°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 25 named rivers · 6 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kelani Ganga: Rare here (1–2 days a month)
Attanagala Oya · Kelani Ganga · Bolgoda Ganga …
Nagalagam StreetBelow Alert · River level 3.2 ftDepartment’s thresholds: Alert 4, minor flood 5, major flood 7 ft
River basins along this road
- km 0–12 · Attanagala Oya basin
- km 12–45 · Kelani Ganga basin
- km 45–70 · Bolgoda Ganga basin
- km 70–160 · Kalu Ganga basin
- km 160–218 · Walawe Ganga basin
- km 219–241 · 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)
- 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)
- 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 26 · 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, 13:03.
River level 3.2 ft · Below Alert · rising 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 67 · Pinwala Ela (Bolgoda Ganga basin) · flows south
20 km² drain to this point - km 76 · Mahawak Oya (Kalu Ganga basin) · flows south
77 km² drain to this point - km 83 · Ingiriya Ela (Kalu Ganga basin) · flows south
24 km² drain to this point - km 85 · Nambapana Ela (Kalu Ganga basin) · flows south
3.8 km² drain to this point - km 89 · Walayal Dola (Kalu Ganga basin) · flows south-east
1,447 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 92 · Yatipauwa Ela (Kalu Ganga basin)
34 km² drain to this point - km 103 · Kuru Ganga (Kalu Ganga basin)
1,267 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 115 · Maha Ela (Kalu Ganga basin) · flows south-east
699 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 119 · Katugas Ela (Kalu Ganga basin) · flows south-west
657 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 123 · Katugas Ela (Kalu Ganga basin) · flows south
12 km² drain to this point - km 127–130 · Kalu Ganga · 4 crossings
199 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Rathnapura, an Irrigation Department gauge on this river (640 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 39.5 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 13:09.
River level 4.45 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5.2, minor flood 7.5, major flood 9.5 m) - km 134 · Kalu Ganga
2.1 km² drain to this point
Rathnapura, an Irrigation Department gauge on this river (640 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 39.5 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 13:09.
River level 4.45 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5.2, minor flood 7.5, major flood 9.5 m) - km 152 · Randi Oya (Kalu Ganga basin) · flows south-west
18 km² drain to this point - km 176 · Walawe Ganga · flows south-east
132 km² drain to this point - km 187 · Belihul Oya (Walawe Ganga basin) · flows south-east
50 km² drain to this point - km 190 · Kiriketi Oya (Walawe Ganga basin) · flows south-east
19 km² drain to this point - km 196 · Malape Oya (Walawe Ganga basin) · flows south-east
2.7 km² drain to this point - km 202 · Weli Oya (Walawe Ganga basin) · flows south-east
23 km² drain to this point - km 209 · Patana Oya (Walawe Ganga basin) · flows east
0.2 km² drain to this point - km 213 · Diyakana Oya (Walawe Ganga basin) · flows south-west
0.5 km² drain to this point - km 228 · Ellatotakanda Oya (Mahaweli Ganga basin) · flows north
28 km² drain to this point
And 12 more unnamed streams on our map
Where this road runs beside a river
- km 127–129 · beside the Kalu Ganga
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 |
|---|---|---|
| Dehiovita | Alert | 67 |
| Ambagamuwa | Alert | 105 |
| Seethawaka | Watch | 45 |
| Yatiyanthota | Watch | 80 |
| Pasbage Korale | Watch | 122 |
| Kothmale West | Watch | 140 |
Rain on route
×Heavy rain, up to 100.5 mm in 24 h
Rain gauges near your route
123456789101112131415161718192021222324252627282930
0226 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Katunayake, 0.8 mm, dry
- 3 Hanwella, 3 mm, light rain
- 9 Dehiowita, 89 mm, fairly heavy rain
- 12 Pambegama Tea Factory, 100.5 mm, heavy rain
- 15 Kithulgala, ≥ 52 mm, fairly heavy rain or more (incomplete day)
- 19 Nawalapitiya, 77.2 mm, fairly heavy rain
- 22 Upper Kotmale, 75.9 mm, fairly heavy rain
- 26 Nuwara Eliya, 30.6 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 1% of 3-day periods since 2000 in Dehiovita.
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 Katana, Ja-Ela, Mahara, Biyagama +10 (the wettest 5% of days there; several times the usual chance). (11 Nov, 05:30 to 12 Nov, 05:30)
- Next 3 days: a chance of a wet day of the kind that comes about 1–2 days a month in Homagama, Ambagamuwa, Pasbage Korale, Kothmale West +3 (the wettest 5% of days there; several times the usual chance). (11 Nov, 05:30 to 14 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 10 Nov, 05:30, compared with each division's own satellite record.
Weather forecast (Met Dept)
×Amber · Thunderstorms Amber Warning (Be Prepared)
- Amber · Thunderstorms Amber Warning (Be Prepared). Districts: Ampara, Badulla, Batticaloa, Colombo, Galle, Gampaha, Hambantota, Jaffna, Kalutara, Kandy, Kegalle, Kilinochchi, Mannar, Matale, Matara, Moneragala, Mullaitivu, Nuwara Eliya, Polonnaruwa, Ratnapura, Trincomalee, Vavuniya. Warning Description: There is an increased likelihood of severe lightning associated with thundershowers at several places in the following areas during the evening or night. Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts. Strong gusty winds of 60–70 kmph and very rough sea conditions can be expected temporarily during thundershowers in the sea areas. Action Required: • Stop paddy and plantation work, outdoor sports and construction when storms approach. • Move into a substantial building or an enclosed hard-topped vehicle; do not shelter under trees, open huts, tents or bus halts. • Avoid open fields, hilltops, beaches, tanks, rivers and other water bodies. • Fishermen and small-boat operators should not go to sea and should return to shore early. • Avoid bathing, using wired phones and handling electrical appliances during thunder. • Avoid travelling on tree-lined roads and through flooded roads. • Follow flood warnings and landslide warnings. • Protect livestock, crops and property, and be ready to move to a safe shelter if advised. Damage Expected: • Widespread thunderstorms with frequent lightning, strong gusty winds and heavy rain. • Risk of injury or death for people in open areas such as paddy fields, plantations, playgrounds, beaches, and for people on boats. • Trees uprooted and damage to roofs of non-engineered houses, including tin and thatched roofs. • Localized flash floods and slope failures in vulnerable areas. • Power and communication interruptions and damage to electrical equipment. • Damage to crops, plantations and livestock. • Dangerous conditions for small fishing boats and craft. • Disruption to road, rail and air transport. Issued 10 Nov, 12:45 · Valid until 11 Nov, 01:00.
- 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, Colombo, 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, Colombo, 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 17 named rivers · 3 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kelani Ganga: Rare here (1–2 days a month)
Attanagala Oya · Kelani Ganga · Mahaweli Ganga
HanwellaBelow Alert · River level 5.45 mDepartment’s thresholds: Alert 6.5, minor flood 7.5, major flood 9.5 m
River basins along this road
- km 0–15 · Attanagala Oya basin
- km 15–18 · Attanagala Oya basin
- km 15 · Kelani Ganga basin
- km 18–116 · Kelani Ganga basin
- km 117–226 · Mahaweli Ganga basin
Satellite rain over these basins
- Kelani Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Attanagala 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
746 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 12 · Ja Ela (Attanagala Oya basin)
2.4 km² drain to this point - km 23 · Old Negombo channel (Kelani Ganga basin) · flows west
4.3 km² drain to this point - km 33–35 · Kelani Ganga · 2 crossings · flows south-west
2,060 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Hanwella, an Irrigation Department gauge 15 km upstream (1,820 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 3 mm in the 24 hours to 10 Nov, 08:30 (Light); 0 mm in the 3 hours to 10 Nov, 13:03.
River level 5.45 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 6.5, minor flood 7.5, major flood 9.5 m) - km 35–36 · Maha Ela (Kelani Ganga basin) · 2 crossings
24 km² drain to this point - km 41–44 · Kelani Ganga · 3 crossings · flows west
1,937 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Hanwella, an Irrigation Department gauge 3.9 km upstream (1,820 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 3 mm in the 24 hours to 10 Nov, 08:30 (Light); 0 mm in the 3 hours to 10 Nov, 13:03.
River level 5.45 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 6.5, minor flood 7.5, major flood 9.5 m) - km 45 · Puswell Oya (Kelani Ganga basin)
1,937 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 67 · Gatahatta oya (Kelani Ganga basin) · flows north
51 km² drain to this point - km 78 · Godellakumbura Ela (Kelani Ganga basin) · flows west
17 km² drain to this point - km 83–86 · Kelani Ganga · 2 crossings · flows south-west
542 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Kithulgala, an Irrigation Department gauge 14.7 km upstream (425 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 52 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 13:01.
River level 2.23 m · Below Alert · rising over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 86 · Madelle Oya (Kelani Ganga basin) · flows north
542 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 88 · Ekki Oya (Kelani Ganga basin) · flows west
537 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 93 · Kelani Ganga · flows west
506 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Kithulgala, an Irrigation Department gauge 8.9 km upstream (425 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 52 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 13:01.
River level 2.23 m · Below Alert · rising over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 99 · Bibili Oya (Kelani Ganga basin) · flows south
488 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 102 · Girankitte Oya (Kelani Ganga basin) · flows south-west
470 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 105 · Kelani Ganga · flows west
418 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Kithulgala, an Irrigation Department gauge 2 km downstream (425 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 52 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 13:01.
River level 2.23 m · Below Alert · rising over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 117–121 · Mahaweli Ganga · 5 crossings · flows east
14 km² drain to this point
Nawalapitiya, an Irrigation Department gauge 8.7 km downstream (187 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 77.2 mm in the 24 hours to 10 Nov, 08:30 (Fairly heavy); 10.6 mm in the 3 hours to 10 Nov, 13:03.
River level 1.64 m · Below Alert · steady over about 3 hours (Department’s thresholds: Alert 3.5, minor flood 5, major flood 6 m) - km 124 · Mahaweli Ganga · flows east
72 km² drain to this point
Nawalapitiya, an Irrigation Department gauge 4.4 km downstream (187 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 77.2 mm in the 24 hours to 10 Nov, 08:30 (Fairly heavy); 10.6 mm in the 3 hours to 10 Nov, 13:03.
River level 1.64 m · Below Alert · steady over about 3 hours (Department’s thresholds: Alert 3.5, minor flood 5, major flood 6 m) - km 130 · Mahaweli Ganga · flows north-east
145 km² drain to this point
Nawalapitiya, an Irrigation Department gauge 0.3 km upstream (187 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 77.2 mm in the 24 hours to 10 Nov, 08:30 (Fairly heavy); 10.6 mm in the 3 hours to 10 Nov, 13:03.
River level 1.64 m · Below Alert · steady over about 3 hours (Department’s thresholds: Alert 3.5, minor flood 5, major flood 6 m) - km 163–166 · Kotmale Oya (Mahaweli Ganga basin) · 4 crossings · flows west
303 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 166–169 · Dambagastalawa Oya (Mahaweli Ganga basin) · 5 crossings · flows north
211 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
irr-calidonia, an Irrigation Department gauge 5.4 km upstream (186 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): no report.
River level: no current data - km 175 · Nanu Oya (Mahaweli Ganga basin) · flows west
67 km² drain to this point - km 182–184 · Nanu Oya (Mahaweli Ganga basin) · 3 crossings · flows north-west
24 km² drain to this point - km 216 · Kandapuhulpola Kandura (Mahaweli Ganga basin) · flows east
13 km² drain to this point
And 26 more unnamed streams on our map
Where this road runs beside a river
- km 40–42 · beside the Kelani Ganga
- km 117–118 · beside the Mahaweli Ganga
- km 168–169 · beside the Dambagastalawa Oya
- km 181–183 · beside the Nanu 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.