Leaving
Level 2 · AlertTue 10 Nov
Alert on 37 km between Yatiyantota and Kiriella
Around Dehiowita and Eheliyagoda, km 81–121.
Also: Watch on 94 km between Kandy and Ratnapura
You reach it about Tue 11:35, 2 h 20 min after leaving, and are through it by Tue 12:35.
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 · 143 km~4 h
NBRI AlertNBRI WatchNot listedRiver crossingRain gaugeNo report
- Kandy
Not listedkm 0–8 - near Kandy
Watchkm 8–30 - Not listedkm 30–34
- Bulathkohupitiya to Yatiyantota
Watchkm 34–81 - Dehiowita
Alertkm 81–95 - near Dehiowita
Watchkm 95–97 - Eheliyagoda
Alertkm 97–120 - Kiriella to Ratnapura
Watchkm 120–143
LandslideAlert5 stretches · NBRI’s adviceRainHeavy rain, up to 113.5 mm in 24 hLast 3 days, satellite: Only a few days a year are this wet here · Last this wet in Dehiovita: November 2025WeatherShowers or thundershowers after 1.00p.mKandy 30° / 24° · Ratnapura 33° / 23°Rivers16 crossingsPeradeniya: Below Alert · falling · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kuru Ganga: Rare here (1–2 days a month)
Level 2 · AlertTue 10 Nov
Alert on 19 km near Eheliyagoda
Around Eheliyagoda, km 118–141.
Also: Watch on 51 km between Hedeniya and Ratnapura
You reach it about Tue 11:45, 2 h 30 min after leaving, and are through it by Tue 12:20.
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 · 169 km~4 h
NBRI AlertNBRI WatchNot listedRiver crossingRain gaugeNo report
- Kandy to Hedeniya
Not listedkm 0–14 - Galagedara
Watchkm 14–21 - Mawathagama to Pasyala
Not listedkm 21–105 - Watchkm 105–119
- Alertkm 119–124
- Watchkm 124–127
- Eheliyagoda
Alertkm 127–141 - Ratnapura
Watchkm 141–169
LandslideAlert5 stretches · NBRI’s adviceRainModerate rain, up to 37.4 mm in 24 hLast 3 days, satellite: Only a few days a year are this wet here · Last this wet in Dehiovita: November 2025WeatherShowers or thundershowers after 1.00p.mKandy 30° / 24° · Ratnapura 33° / 23°Rivers23 crossingsDunamale: Minor flood level · steady · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Level 2 · AlertTue 10 Nov
Alert on 20 km between Kiriella and Ratnapura
km 173–194.
Also: Watch on 77 km between Kandy and Ratnapura
You reach it about Tue 13:00, 3 h 50 min after leaving, and are through it by Tue 13:50.
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 · 197 km~4 h 40 min
NBRI AlertNBRI WatchNot listedRiver crossingRain gaugeNo report
- Kandy
Not listedkm 0–6 - between Kandy and Kegalle
Watchkm 6–31 - near Kegalle
Not listedkm 31–36 - Kegalle
Watchkm 36–45 - near Kegalle
Not listedkm 45–50 - Warakapola
Watchkm 50–62 - Pasyala to Kaduwela
Not listedkm 62–148 - Ingiriya to Kiriella
Watchkm 148–174 - between Kiriella and Ratnapura
Alertkm 174–193 - Ratnapura
Watchkm 193–197
LandslideAlert7 stretches · NBRI’s adviceRainHeavy rain, up to 113.5 mm in 24 hLast 3 days, satellite: Only a few days a year are this wet here · Last this wet in Kiriella: November 2025WeatherShowers or thundershowers after 1.00p.mKandy 30° / 24° · Ratnapura 33° / 23°Rivers27 crossingsDunamale: Minor flood level · steady · 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 Kandy–Ratnapura road
The fastest road we know from Kandy to Ratnapura is 143 km, about 4 h, via Yatiyantota, Dehiowita.
Main roads on it: Kegalle-Bulathkohupitiya-Karawanella Road (28 km), Colombo-Kandy Road (24 km), Ratnapura Road (20 km).
We show 3 roads between them, fastest first.
DS divisions on this road
It passes through 12 DS divisions in 4 districts, in travel order:
- Kandy Four Gravets & Gangawata Korale
- Yatinuwara
- Mawanella
- Rambukkana
- Kegalle
- Bulathkohupitiya
- Yatiyanthota
- Dehiovita
- Seethawaka
- Eheliyagoda
- Kiriella
- Ratnapura
Past NBRI bulletins
Most often listed on this road, in the 41 NBRI bulletins we have passed on since Sun 20 Sept: Mawanella (38), Yatiyanthota (36), Bulathkohupitiya (35).
A record of past bulletins, not a forecast. Not being listed doesn’t mean safe.
Steep terrain
About 5 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, 03:30. Checked Tue 10 Nov, 09:20.
Was this page useful?Thanks, noted.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Dehiovita | Alert | 81 |
| Eheliyagoda | Alert | 99 |
| Yatinuwara | Watch | 7 |
| Mawanella | Watch | 18 |
| Kegalle | Watch | 34 |
| Bulathkohupitiya | Watch | 55 |
| Yatiyanthota | Watch | 72 |
| Seethawaka | Watch | 95 |
| Kiriella | Watch | 120 |
| Ratnapura | Watch | 138 |
Rain on route
×Heavy rain, up to 113.5 mm in 24 h
Rain gauges near your route
1234567891011121314151617181920212223242526
0143 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 2 Peradeniya, 16 mm, moderate rain
- 23 Kiriella, 113.5 mm, heavy rain
- 26 Ratnapura, 8.3 mm, light 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 1% of 3-day periods since 2000 in Dehiovita, 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 Kandy Four Gravets & Gangawata Korale, Yatinuwara, Mawanella, Rambukkana +4 (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 Kandy Four Gravets & Gangawata Korale, Yatinuwara, Mawanella, Rambukkana +5 (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 Kandy, Kegalle, Colombo and Ratnapura.
- 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, Ratnapura, Kandy and Colombo 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, Ratnapura, Kandy and Colombo 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.
- 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 15 named rivers · 4 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kuru Ganga: Rare here (1–2 days a month)
Mahaweli Ganga · Maha Oya · Kelani 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 0–16 · Mahaweli Ganga basin
- km 17–44 · Maha Oya basin
- km 44–106 · Kelani Ganga basin
- km 106–143 · Kalu 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)
- Mahaweli Ganga basin · Last 3 days: Unusual here (3 days a month)
- Maha Oya 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 6–7 · Mahaweli Ganga · 2 crossings · flows east
1,152 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 2.6 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 10–14 · Nanu Oya (Mahaweli Ganga basin) · 3 crossings · flows south-east
45 km² drain to this point - km 23–24 · Hingul Oya (Maha Oya basin) · 3 crossings · flows west
39 km² drain to this point - km 27 · 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 45 · Watura oya (Kelani Ganga basin)
0.7 km² drain to this point - km 49 · Gurugoda Oya (Kelani Ganga basin) · flows west
87 km² drain to this point
Holombuwa, an Irrigation Department gauge 11.5 km downstream (154 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 3.9 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 09:08.
River level 1.25 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 65–68 · Ritigaha Oya (Kelani Ganga basin) · 4 crossings · flows north
66 km² drain to this point - km 74 · We Oya (Kelani Ganga basin) · flows south-west
73 km² drain to this point - km 77 · Welibela Oya (Kelani Ganga basin)
85 km² drain to this point - km 78 · Kelani Ganga · flows north
547 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Kithulgala, an Irrigation Department gauge 17.5 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, 09:08.
River level 2.02 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 84 · Godellakumbura Ela (Kelani Ganga basin) · flows west
17 km² drain to this point - km 95 · Gatahatta oya (Kelani Ganga basin) · flows north
51 km² drain to this point - km 101 · Gatahatta oya (Kelani Ganga basin) · flows north-east
42 km² drain to this point - km 127 · 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 138 · 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 143 · 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)
And 4 more unnamed streams on our map
Where this road runs beside a river
- km 22–24 · beside the Hingul Oya
- km 65–67 · beside the Ritigaha 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 |
|---|---|---|
| Dehiovita | Alert | 119 |
| Eheliyagoda | Alert | 128 |
| Thumpane | Watch | 14 |
| Ruwanwella | Watch | 105 |
| Seethawaka | Watch | 124 |
| Kuruvita | Watch | 140 |
| Kiriella | Watch | 154 |
| Ratnapura | Watch | 164 |
Rain on route
×Moderate rain, up to 37.4 mm in 24 h
Rain gauges near your route
12345678910111213141516171819202122232425262728
0169 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 2 Katugastota, 1.2 mm, light rain
- 8 Kurunegala, 18.4 mm, moderate rain
- 12 Giriulla, ≥ 39.7 mm, moderate rain or more (incomplete day)
- 15 Dunamale, 37.4 mm, moderate rain
- 18 Glencourse, 12 mm, moderate rain
- 28 Ratnapura, 8.3 mm, light 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, Kuruvita, 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 Kandy Four Gravets & Gangawata Korale, Harispattuwa, Thumpane, Pujapitiya +9 (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 Kandy Four Gravets & Gangawata Korale, Harispattuwa, Thumpane, Pujapitiya +14 (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 Kandy, Kurunegala, Gampaha, Kegalle, Colombo and Ratnapura.
- 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, Ratnapura, Kandy, Colombo and Gampaha 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, Ratnapura, Kandy, Colombo, Gampaha 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.
- 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 22 named rivers · 6 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month) · Minor flood level
Mahaweli Ganga · Deduru Oya · Maha Oya …
DunamaleMinor flood level · River level 4.6 mDepartment’s thresholds: Alert 3.3, minor flood 4.4, major flood 5.5 m
River basins along this road
- km 0–15 · Mahaweli Ganga basin
- km 15–31 · Deduru Oya basin
- km 31–36 · Maha Oya basin
- km 36–53 · Deduru Oya basin
- km 53–78 · Maha Oya basin
- km 78–110 · Attanagala Oya basin
- km 110–135 · Kelani Ganga basin
- km 135–169 · Kalu 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)
- Mahaweli Ganga basin · Last 3 days: Unusual here (3 days a month)
- Deduru Oya basin · Last 3 days: Unusual here (3 days a month)
- Maha Oya basin · Last 3 days: Unusual here (3 days a month)
- Attanagala Oya 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 5 · Mahaweli Ganga · flows north
1,194 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 9.7 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 17–22 · Dik Oya (Deduru Oya basin) · 4 crossings · flows north-west
2.2 km² drain to this point - km 21 · Narankaha Ela (Deduru Oya basin) · flows south-west
16 km² drain to this point - km 29 · Kaspatu Oya (Deduru Oya basin) · flows north-west
41 km² drain to this point - km 40 · Getuwana Ela (Deduru Oya basin) · flows north
0.3 km² drain to this point - km 42 · Magur Oya (Deduru Oya basin) · flows north-west
1.3 km² drain to this point - km 50 · Rekawa Ela (Deduru Oya basin) · flows west
15 km² drain to this point - km 55–56 · Gondara Ela (Maha Oya basin) · 2 crossings · flows south
4.2 km² drain to this point - km 62–63 · Meda Ela (Maha Oya basin) · 2 crossings · flows north
58 km² drain to this point - km 68 · Midella Ela (Maha Oya basin)
132 km² drain to this point - km 70–71 · 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 75 · 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 87–89 · Diyaelle Oya (Attanagala Oya basin) · 2 crossings · flows west
31 km² drain to this point - km 98 · Dondugam Oya (Attanagala Oya basin) · flows west
112 km² drain to this point
Dunamale, an Irrigation Department gauge 10.5 km downstream (150 km² upstream): 37.4 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 4.6 m · Minor flood level · steady over about 3 hours (Department’s thresholds: Alert 3.3, minor flood 4.4, major flood 5.5 m) - km 106–108 · Woharaka Oya (Attanagala Oya basin) · 2 crossings · flows north-east
3.3 km² drain to this point - km 115 · Goraka Elle Dola (Kelani Ganga basin) · flows south-west
8.9 km² drain to this point - km 118 · Kelani Ganga · flows south
1,063 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Glencourse, an Irrigation Department gauge 3.7 km downstream (1,531 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 12 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 09:07.
River level 13.3 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 15, minor flood 15.5, major flood 19 m) - km 124 · Gatahatta oya (Kelani Ganga basin) · flows north
51 km² drain to this point - km 130 · Gatahatta oya (Kelani Ganga basin) · flows north-east
42 km² drain to this point - km 139 · N C (Kalu Ganga basin)
0.6 km² drain to this point - km 149 · Kuru Ganga (Kalu Ganga basin)
15 km² drain to this point - km 164 · 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 168 · 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)
And 5 more unnamed streams on our map
Where this road runs beside a river
- km 17–18 · beside the Dik Oya
- km 70–71 · beside the Kuda 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 |
|---|---|---|
| Ayagama | Alert | 174 |
| Elapatha | Alert | 178 |
| Yatinuwara | Watch | 6 |
| Mawanella | Watch | 19 |
| Kegalle | Watch | 36 |
| Warakapola | Watch | 50 |
| Ingiriya | Watch | 148 |
| Kiriella | Watch | 160 |
| Ratnapura | Watch | 193 |
Rain on route
×Heavy rain, up to 113.5 mm in 24 h
Rain gauges near your route
12345678910111213141516171819202122232425262728
0197 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 2 Peradeniya, 16 mm, moderate rain
- 13 Dunamale, 37.4 mm, moderate rain
- 15 Hanwella, 3 mm, light rain
- 17 Ratmalana, 14.6 mm, moderate rain
- 20 Ellagawa, 93.4 mm, fairly heavy rain
- 21 Kiriella, 113.5 mm, heavy rain
- 27 Rathnapura, 39.5 mm, moderate rain
- 28 Ratnapura, 8.3 mm, light rain
20 gauges not reporting.
Gauge coverage: most of the route.
NBRI's warning stays in force after rain eases.
Satellite estimate
- Last 24 hours: among the wettest 1% of 24-hour periods since 2000 in Ayagama, Elapatha.
- Last 3 days: among the wettest 1% of 3-day periods since 2000 in Kiriella, Ayagama, Elapatha.
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 Kandy Four Gravets & Gangawata Korale, Harispattuwa, Yatinuwara, Mawanella +7 (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 Kandy Four Gravets & Gangawata Korale, Harispattuwa, Yatinuwara, Mawanella +11 (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 Kandy, Kegalle, Gampaha, Colombo, Kalutara and Ratnapura.
- 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, Ratnapura, Kandy, Colombo, Gampaha and Kalutara 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, Ratnapura, Kandy, Colombo, Gampaha and Kalutara 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.
- 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 23 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) · Minor flood level
Mahaweli Ganga · Maha Oya · Attanagala Oya …
DunamaleMinor flood level · River level 4.6 mDepartment’s thresholds: Alert 3.3, minor flood 4.4, major flood 5.5 m
River basins along this road
- km 0–18 · Mahaweli Ganga basin
- km 18–63 · Maha Oya basin
- km 63–96 · Attanagala Oya basin
- km 96–117 · Kelani Ganga basin
- km 117–142 · Bolgoda Ganga basin
- km 142–197 · Kalu 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)
- Mahaweli Ganga basin · Last 3 days: Unusual here (3 days a month)
- Maha Oya basin · Last 3 days: Unusual here (3 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)
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 4–9 · Mahaweli Ganga · 5 crossings · flows north
1,175 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 5.2 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 12–16 · Nanu Oya (Mahaweli Ganga basin) · 3 crossings · flows south-east
45 km² drain to this point - km 24–26 · Hingul Oya (Maha Oya basin) · 3 crossings · flows west
39 km² drain to this point - km 29 · Maha Oya · flows north
199 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 48–51 · Galigamuwa Oya (Maha Oya basin) · 2 crossings · flows west
8.5 km² drain to this point - km 52 · Rogala Oya (Maha Oya basin) · flows north-east
3.6 km² drain to this point - km 59–61 · Kuda Oya (Maha Oya basin) · 2 crossings · flows north
54 km² drain to this point - km 73 · Diyaelle Oya (Attanagala Oya basin) · flows north-west
21 km² drain to this point - km 87 · Dondugam Oya (Attanagala Oya basin) · flows west
183 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Dunamale, an Irrigation Department gauge 6.3 km upstream (150 km² upstream): 37.4 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 4.6 m · Minor flood level · steady over about 3 hours (Department’s thresholds: Alert 3.3, minor flood 4.4, major flood 5.5 m) - km 91–93 · Uruwal Oya (Attanagala Oya basin) · 2 crossings · flows west
42 km² drain to this point - km 109 · 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 111–112 · Maha Ela (Kelani Ganga basin) · 2 crossings
15 km² drain to this point - km 125 · Nudun Ela (Bolgoda Ganga basin) · flows west
35 km² drain to this point - km 130 · Maha Oya (Bolgoda Ganga basin) · flows west
27 km² drain to this point - km 140 · Pinwala Ela (Bolgoda Ganga basin) · flows south
20 km² drain to this point - km 148 · Mahawak Oya (Kalu Ganga basin) · flows south
77 km² drain to this point - km 155 · Ingiriya Ela (Kalu Ganga basin) · flows south
24 km² drain to this point - km 157 · Nambapana Ela (Kalu Ganga basin) · flows south
3.8 km² drain to this point - km 161 · 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 164 · Yatipauwa Ela (Kalu Ganga basin)
34 km² drain to this point - km 174 · Kalu Ganga
1,268 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Ellagawa, an Irrigation Department gauge on this river (1,439 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 93.4 mm in the 24 hours to 10 Nov, 08:30 (Fairly heavy); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 8.63 m · Below Alert · steady over about 3 hours (Department’s thresholds: Alert 10, minor flood 10.7, major flood 12.2 m) - km 175 · Galatura Ela (Kalu Ganga basin) · flows west
74 km² drain to this point - km 180 · Kalu Ganga · 2 crossings
909 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Ellagawa, an Irrigation Department gauge on this river (1,439 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 93.4 mm in the 24 hours to 10 Nov, 08:30 (Fairly heavy); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 8.63 m · Below Alert · steady over about 3 hours (Department’s thresholds: Alert 10, minor flood 10.7, major flood 12.2 m) - km 181 · Dandura Ela (Kalu Ganga basin)
0.3 km² drain to this point - km 184–187 · Kalu Ganga · 4 crossings
170 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, 09:04.
River level 4.83 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5.2, minor flood 7.5, major flood 9.5 m) - km 189–192 · Hongamuwa Ganga (Kalu Ganga basin) · 4 crossings · flows west
162 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 195 · Kalu Ganga
8.5 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, 09:04.
River level 4.83 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5.2, minor flood 7.5, major flood 9.5 m)
And 14 more unnamed streams on our map
Where this road runs beside a river
- km 24–25 · beside the Hingul Oya
- km 189–190 · beside the Hongamuwa Ganga
- km 190–192 · beside the Hongamuwa 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.
NBRI’s advice, as issued
×Watch · NBRI adviceSince 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, 20:00