Alert on 59 km between Watawala and Kiriella
Around Watawala and Ginigathhena, km 12–35, km 59–99.
Also: Watch on 63 km between Hatton and Ratnapura
You reach it about Tue 10:55, 30 min after leaving, and are through it by Tue 13:25.
NBRI’s bulletin is valid until Tue 20:00, so it covers that time.
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.
- Hatton
Watchkm 0–12 - Watawala to Ginigathhena
Alertkm 12–35 - Kithulgala to Yatiyantota
Watchkm 35–60 - Dehiowita
Alertkm 60–73 - near Dehiowita
Watchkm 73–76 - Eheliyagoda
Alertkm 76–99 - Kiriella to Ratnapura
Watchkm 99–122
Alert on 58 km between Kithulgala and Eheliyagoda
Around Dehiowita and Eheliyagoda, km 14–46, km 70–98.
Also: Watch on 68 km between Hatton and Ratnapura
You reach it about Tue 10:55, 30 min after leaving, and are through it by Tue 13:30.
NBRI’s bulletin is valid until Tue 20:00, so it covers that time.
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.
- Hatton to Dickoya
Watchkm 0–15 - near Kithulgala
Alertkm 15–46 - Kithulgala to Yatiyantota
Watchkm 46–70 - Dehiowita to Eheliyagoda
Alertkm 70–97 - Ratnapura
Watchkm 97–126
Watch on 82 km between Hatton and Ratnapura
Around Hatton and Dickoya, km 0–30, km 60–113.
It starts where you set off; you are through it by Tue 14:30.
NBRI’s bulletin is valid until Tue 20:00, so it covers that time.
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.
- Hatton to Bogawantalawa
Watchkm 0–29 - Pinnawala Town
Not listedkm 29–60 - Ratnapura
Watchkm 60–113
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 Hatton–Ratnapura road
The fastest road we know from Hatton to Ratnapura is 122 km, about 3 h 40 min, via Ginigathhena, Kiriella.
Main roads on it: Gingathena Road (33 km), Ratnapura Road (20 km), Hatton Road (17 km).
We show 3 roads between them, fastest first.
DS divisions on this road
It passes through 8 DS divisions in 4 districts, in travel order:
Past NBRI bulletins
Most often listed on this road, in the 41 NBRI bulletins we have passed on since Sun 20 Sept: Yatiyanthota (36), Ratnapura (35), Dehiovita (30).
A record of past bulletins, not a forecast. Not being listed doesn’t mean safe.
Steep terrain
About 7 km of it runs through steep terrain (slopes over 30° beside the road). The longest stretch is between Watawala and Ginigathhena.
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, 04:30. Checked Tue 10 Nov, 10:30.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Ambagamuwa | Alert | 12 |
| Dehiovita | Alert | 60 |
| Eheliyagoda | Alert | 77 |
| Norwood | Watch | 0 |
| Yatiyanthota | Watch | 35 |
| Seethawaka | Watch | 73 |
| Kiriella | Watch | 99 |
| Ratnapura | Watch | 116 |
Rain on route
×Heavy rain, up to 149 mm in 24 h
Rain gauges near your route
Key
- 1 Hatton (NBRI), 123.6 mm, heavy rain
- 3 Norton, 14.2 mm, moderate rain
- 4 Watawala (NBRI), 90.8 mm, fairly heavy rain
- 5 Ginigathhena (NBRI), 84 mm, fairly heavy rain
- 6 Kalugala (NBRI), 149 mm, heavy rain
- 7 Kithulgala, ≥ 52 mm, fairly heavy rain or more (incomplete day)
- 8 Kitulgala (NBRI), 65.2 mm, fairly heavy rain
- 9 Theligama (NBRI), 70.6 mm, fairly heavy rain
- 12 Yatiyanthota (NBRI), 77.8 mm, fairly heavy rain
- 16 Kotahera (NBRI), 43.2 mm, moderate rain
- 18 Dehiovita (NBRI), 136.6 mm, heavy rain
- 19 Eheliyagoda (NBRI), 96 mm, fairly heavy rain
- 20 Gettukade (NBRI), 97 mm, fairly heavy rain
- 21 Ellawala (NBRI), 3.8 mm, light rain
- 22 Kiriella, 113.5 mm, heavy rain
- 24 Ratnapura (NBRI), 71.8 mm, fairly heavy rain
- 25 Ratnapura, 8.3 mm, light rain
8 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 Norwood, Ambagamuwa, Yatiyanthota, Ratnapura (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 Norwood, Ambagamuwa, Eheliyagoda, Kiriella +1 (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 Nuwara Eliya, 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, Nuwara Eliya 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, Nuwara Eliya 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)
- 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 11 named rivers · 3 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 · Kelani Ganga · Kalu Ganga
River basins along this road
- km 0–23 · Mahaweli Ganga basin
- km 24–84 · Kelani Ganga basin
- km 84–122 · 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)
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 · Mahaweli Ganga · 2 crossings · flows north-west
11 km² drain to this point - km 11–23 · Mahaweli Ganga · 11 crossings · flows north-west
25 km² drain to this point - km 35 · 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, 10:08.
River level 1.97 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 38 · 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 41 · 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 47 · 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, 10:08.
River level 1.97 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 52 · 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 54–57 · 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, 10:08.
River level 1.97 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 54 · 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 62 · Godellakumbura Ela (Kelani Ganga basin) · flows west
17 km² drain to this point - km 73 · Gatahatta oya (Kelani Ganga basin) · flows north
51 km² drain to this point - km 79 · Gatahatta oya (Kelani Ganga basin) · flows north-east
42 km² drain to this point - km 105 · 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 117 · 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 121 · 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 3 more unnamed streams on our map
Where this road runs beside a river
- km 5–6 · beside the Mahaweli Ganga
- km 14–15 · beside the Mahaweli Ganga
- km 18–20 · beside the Mahaweli Ganga
- km 21–23 · beside the Mahaweli 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 |
|---|---|---|
| Ambagamuwa | Alert | 15 |
| Dehiovita | Alert | 70 |
| Eheliyagoda | Alert | 91 |
| Norwood | Watch | 0 |
| Yatiyanthota | Watch | 46 |
| Kuruvita | Watch | 97 |
| Kiriella | Watch | 111 |
| Ratnapura | Watch | 120 |
Rain on route
×Heavy rain, up to 149 mm in 24 h
Rain gauges near your route
Key
- 1 Hatton (NBRI), 123.6 mm, heavy rain
- 2 Castlereigh, 6 mm, light rain
- 3 Lethenty Tea Estate (NBRI), 122.8 mm, heavy rain
- 4 Norton, 14.2 mm, moderate rain
- 5 Norton (NBRI), 83.6 mm, fairly heavy rain
- 6 Laxapana, 12.4 mm, moderate rain
- 7 Kalugala (NBRI), 149 mm, heavy rain
- 8 Ginigathhena (NBRI), 84 mm, fairly heavy rain
- 9 Kithulgala, ≥ 52 mm, fairly heavy rain or more (incomplete day)
- 10 Kitulgala (NBRI), 65.2 mm, fairly heavy rain
- 11 Theligama (NBRI), 70.6 mm, fairly heavy rain
- 14 Yatiyanthota (NBRI), 77.8 mm, fairly heavy rain
- 16 Dehiovita (NBRI), 136.6 mm, heavy rain
- 17 Eheliyagoda (NBRI), 96 mm, fairly heavy rain
- 18 Imbulpitiya (NBRI), 91.6 mm, fairly heavy rain
- 20 Ratnapura (NBRI), 71.8 mm, fairly heavy rain
- 21 Ratnapura, 8.3 mm, light rain
4 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 Norwood, Ambagamuwa, Yatiyanthota, Ratnapura (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 Norwood, Ambagamuwa, Eheliyagoda, Kuruvita +2 (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 Nuwara Eliya, Kegalle 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 and Nuwara Eliya 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 and Nuwara Eliya 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 14 named rivers · 3 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Sitawaka Gaga: Very rare here (a few days a year)
Mahaweli Ganga · Kelani Ganga · Kalu Ganga
River basins along this road
- km 0–2 · Mahaweli Ganga basin
- km 2–92 · Kelani Ganga basin
- km 92–126 · 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)
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 11–17 · Kehelgama Ganga (Kelani Ganga basin) · 7 crossings · flows north-west
148 km² drain to this point - km 46 · 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, 10:08.
River level 1.97 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 49 · 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 51 · 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 58 · 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, 10:08.
River level 1.97 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 63 · 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 65–68 · 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, 10:08.
River level 1.97 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 6 m) - km 65 · 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 73 · Godellakumbura Ela (Kelani Ganga basin) · flows west
17 km² drain to this point - km 78 · Maha Oya (Kelani Ganga basin) · flows south-west
23 km² drain to this point - km 83 · Sitawaka Gaga (Kelani Ganga basin) · flows west
300 km² drain to this point · rain over that area, Last 3 days: Very rare here (a few days a year)
Deraniyagala (Irrigation Dept), an Irrigation Department gauge 9.9 km upstream (162 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 120.4 mm in the 24 hours to 10 Nov, 08:30 (Heavy); 0 mm in the 3 hours to 10 Nov, 10:02.
River level 0.89 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4.8, minor flood 5.8, major flood 7 m) - km 84–88 · Ambalanpitiya Oya (Kelani Ganga basin) · 4 crossings · flows north
70 km² drain to this point - km 96 · N C (Kalu Ganga basin)
0.6 km² drain to this point - km 106 · Kuru Ganga (Kalu Ganga basin)
15 km² drain to this point - km 121 · 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 125 · 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 6 more unnamed streams on our map
Where this road runs beside a river
- km 11–13 · beside the Kehelgama Ganga
- km 13–14 · beside the Kehelgama 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 |
|---|---|---|
| Norwood | Watch | 0 |
| Balangoda | Watch | 60 |
| Ratnapura | Watch | 77 |
Rain on route
×Heavy rain, up to 123.6 mm in 24 h
Rain gauges near your route
Key
- 1 Hatton (NBRI), 123.6 mm, heavy rain
- 2 Norwood, ≥ 49.8 mm, moderate rain or more (incomplete day)
- 3 Mahanilu Tea Estate (NBRI), 42 mm, moderate rain
- 4 Bogawanthalawa Tea Estate (NBRI), 39.2 mm, moderate rain
- 5 NIPM Morar (NBRI), 33.4 mm, moderate rain
- 7 Bogawanthalawa (NBRI), 44.4 mm, moderate rain
- 8 Pinnawala (NBRI), 47.4 mm, moderate rain
- 9 Pettigala (NBRI), 20 mm, moderate rain
- 10 Imbulpe (NBRI), 20.8 mm, moderate rain
- 11 Waleboda (NBRI), 0 mm, dry
- 12 Wewelwaththa (NBRI), 46.8 mm, moderate rain
- 13 Galaboda (NBRI), 48.6 mm, moderate rain
- 14 Ratnapura, 8.3 mm, light rain
1 gauge 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 Norwood, Imbulpe, Balangoda, Ratnapura.
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 Norwood, Imbulpe, Balangoda, Ratnapura (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 Norwood, Imbulpe, Balangoda, Ratnapura (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 Nuwara Eliya 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 Ratnapura and Nuwara Eliya 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 and Nuwara Eliya 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 4 named rivers · 4 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kalu Ganga: Rare here (1–2 days a month)
Mahaweli Ganga · Kelani Ganga · Walawe Ganga …
River basins along this road
- km 0–2 · Mahaweli Ganga basin
- km 2–30 · Kelani Ganga basin
- km 30–76 · Walawe Ganga basin
- km 76–113 · Kalu Ganga basin
Satellite rain over these basins
- Kelani 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)
- 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)
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 10–18 · Hambamata Oya (Kelani Ganga basin) · 8 crossings · flows north-west
97 km² drain to this point
Norwood, an Irrigation Department gauge 0.4 km downstream (97 km² upstream): at least 49.8 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 10:06.
River level 1.15 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 1.5, minor flood 3, major flood 4.5 m) - km 24 · Hambamata Oya (Kelani Ganga basin) · flows north-west
27 km² drain to this point
Norwood, an Irrigation Department gauge 13.4 km downstream (97 km² upstream): at least 49.8 mm in the 24 hours to 10 Nov, 08:30 (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 10:06.
River level 1.15 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 1.5, minor flood 3, major flood 4.5 m) - km 61 · Walawe Ganga · flows south-east
132 km² drain to this point - km 84 · Randi Oya (Kalu Ganga basin) · flows south-west
18 km² drain to this point - km 102 · 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, 10:01.
River level 4.73 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5.2, minor flood 7.5, major flood 9.5 m) - km 107–109 · 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, 10:01.
River level 4.73 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5.2, minor flood 7.5, major flood 9.5 m)
And 8 more unnamed streams on our map
Where this road runs beside a river
- km 12–13 · beside the Hambamata Oya
- km 13–15 · beside the Hambamata Oya
- km 108–110 · 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.