Leaving
Level 1 · WatchTue 10 Nov
Watch on 45 km between Kandy and Pasyala
Around Kegalle and Warakapola, km 7–30, km 34–44, km 48–61 and 1 more.
You reach it about Tue 10:00, 10 min after leaving, and are through it by Tue 11:25.
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 · 117 km~2 h 50 min
NBRI WatchNot listedRiver crossingRain gaugeNo report
- Kandy
Not listedkm 0–8 - between Kandy and Kegalle
Watchkm 8–30 - near Kegalle
Not listedkm 30–34 - Kegalle
Watchkm 34–43 - near Kegalle
Not listedkm 43–49 - Warakapola
Watchkm 49–61 - Pasyala to Colombo
Not listedkm 61–117
LandslideWatch4 stretches · NBRI’s adviceRainModerate rain, up to 38.6 mm in 24 hLast 3 days, satellite: About 1–2 days a month are this wet hereWeatherShowers or thundershowers after 1.00p.mKandy 30° / 24° · Colombo 31° / 24°Rivers13 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)
Level 1 · WatchTue 10 Nov
Watch on 7 km between Hedeniya and Galagedara
Around Galagedara, km 13–21.
You reach it about Tue 10:05, 20 min after leaving, and are through it by Tue 10:15.
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 · 145 km~2 h 50 min
NBRI WatchNot listedNo current dataRiver crossingRain gaugeNo report
- Kandy to Hedeniya
Not listedkm 0–14 - Galagedara
Watchkm 14–21 - Mawathagama to Colombo
Not listedkm 21–145
LandslideWatch1 stretch · NBRI’s adviceRainModerate rain, up to 38.6 mm in 24 hLast 3 days, satellite: About 1–2 days a month are this wet hereWeatherShowers or thundershowers after 1.00p.mKandy 30° / 24° · Colombo 31° / 24°Rivers19 crossingsPeradeniya: 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)
Level 1 · WatchTue 10 Nov
Watch on 7 km between Hedeniya and Galagedara
Around Galagedara, km 13–21.
You reach it about Tue 10:10, 20 min after leaving, and are through it by Tue 10:20.
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 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 · 140 km~3 h 10 min
NBRI WatchNot listedRiver crossingRain gaugeNo report
- Kandy to Hedeniya
Not listedkm 0–13 - Galagedara
Watchkm 13–20 - Mawathagama to Colombo
Not listedkm 20–141
LandslideWatch1 stretch · NBRI’s adviceRainModerate rain, up to 38.6 mm in 24 hLast 3 days, satellite: About 1–2 days a month are this wet hereWeatherShowers or thundershowers after 1.00p.mKandy 30° / 24° · Colombo 31° / 24°Rivers19 crossingsPeradeniya: 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 Kandy–Colombo road
The fastest road we know from Kandy to Colombo is 117 km, about 2 h 50 min, via Kegalle, Warakapola.
Main roads on it: Colombo-Kandy Road (95 km), Sirimavo Bandaranaike Mawatha (Peradeniya Road) (4 km).
We show 3 roads between them, fastest first.
DS divisions on this road
It passes through 16 DS divisions in 4 districts, in travel order:
- Kandy Four Gravets & Gangawata Korale
- Yatinuwara
- Mawanella
- Rambukkana
- Kegalle
- Galigamuwa
- Warakapola
- Mirigama
- Attanagalla
- Gampaha
- Mahara
- Biyagama
- Kelaniya
- Kolonnawa
- Colombo
- Thimbirigasyaya
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 3 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, 04:30. Checked Tue 10 Nov, 09:50.
Was this page useful?Thanks, noted.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Yatinuwara | Watch | 7 |
| Mawanella | Watch | 18 |
| Kegalle | Watch | 34 |
| Warakapola | Watch | 49 |
Rain on route
×Moderate rain, up to 38.6 mm in 24 h
Rain gauges near your route
123456789101112131415
0117 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Kandy NTS (NBRI), 10.6 mm, moderate rain
- 2 Peradeniya, 16 mm, moderate rain
- 3 Kadugannawa (NBRI), 31.8 mm, moderate rain
- 4 Anwarama (NBRI), 14.8 mm, moderate rain
- 5 Ussapitiya (NBRI), 10.4 mm, moderate rain
- 6 Deewela (NBRI), 11.6 mm, moderate rain
- 7 Kegalu MV (NBRI), 6.4 mm, light rain
- 9 Alawwa (NBRI), 5.8 mm, light rain
- 11 Warakapola (NBRI), 38.6 mm, moderate rain
- 13 Dunamale, 37.4 mm, moderate rain
- 15 Colombo, 8.6 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 5% of 3-day periods since 2000 in Kandy Four Gravets & Gangawata Korale, Yatinuwara, Mawanella, Rambukkana +3.
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, Gampaha and Colombo.
- 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, 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, Kandy, Colombo and Gampaha 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.
- Colombo: Showers or thundershowers after 1.00p.m. Max 31°C, min 24°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments
×Crosses 12 named rivers · 4 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 0–16 · Mahaweli Ganga basin
- km 16–61 · Maha Oya basin
- km 61–94 · Attanagala Oya basin
- km 94–117 · Kelani Ganga basin
Satellite rain over these basins
- Kelani 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)
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 47–49 · Galigamuwa Oya (Maha Oya basin) · 2 crossings · flows west
8.5 km² drain to this point - km 50 · Rogala Oya (Maha Oya basin) · flows north-east
3.6 km² drain to this point - km 58–60 · Kuda Oya (Maha Oya basin) · 2 crossings · flows north
54 km² drain to this point - km 72 · Diyaelle Oya (Attanagala Oya basin) · flows north-west
21 km² drain to this point - km 85 · 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 90–91 · Uruwal Oya (Attanagala Oya basin) · 2 crossings · flows west
42 km² drain to this point - km 111 · Kelani Ganga · flows west
2,256 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 0.6 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 112 · Heea Ela (Kelani Ganga basin)
3.5 km² drain to this point - km 115 · Heea Ela (Kelani Ganga basin)
1.6 km² drain to this point
And 3 more unnamed streams on our map
Where this road runs beside a river
- km 22–24 · 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 |
|---|---|---|
| Thumpane | Watch | 14 |
Rain on route
×Moderate rain, up to 38.6 mm in 24 h
Rain gauges near your route
123456789101112131415161718
0145 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Kandy NTS (NBRI), 10.6 mm, moderate rain
- 2 Katugastota, 1.2 mm, light rain
- 3 Katugastota (NBRI), 9.8 mm, light rain
- 4 Muruthalawa (NBRI), 13.2 mm, moderate rain
- 5 Galagedara (NBRI), 14 mm, moderate rain
- 7 Walpolakanda (NBRI), 7.6 mm, light rain
- 8 Kurunegala, 18.4 mm, moderate rain
- 9 Polgahawela (NBRI), 4.4 mm, light rain
- 10 Maharachchimulla (NBRI), 5.6 mm, light rain
- 11 Dambadeniya (NBRI), 7 mm, light rain
- 12 Giriulla, ≥ 39.7 mm, moderate rain or more (incomplete day)
- 13 Warakapola (NBRI), 38.6 mm, moderate rain
- 15 Badalgama, 6 mm, light rain
- 16 Katunayake, 14.7 mm, moderate rain
- 18 Colombo, 8.6 mm, light rain
3 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 Kandy Four Gravets & Gangawata Korale, Harispattuwa, Thumpane, Pujapitiya +5.
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 +8 (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 +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, Kurunegala, Gampaha and Colombo.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Kandy, 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 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.
- Colombo: Showers or thundershowers after 1.00p.m. Max 31°C, min 24°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments
×Crosses 17 named rivers · 5 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kelani Ganga: Rare here (1–2 days a month)
Mahaweli Ganga · Deduru Oya · Maha Oya …
PeradeniyaBelow Alert · River level 3.55 mDepartment’s thresholds: Alert 5, minor flood 7, major flood 9 m
River basins along this road
- km 0–15 · 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 78–84 · Attanagala Oya basin
- km 84–99 · Maha Oya basin
- km 99–124 · Attanagala Oya basin
- km 124–145 · Kelani Ganga basin
Satellite rain over these basins
- Kelani 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 74 · 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 91 · Kuda Oya (Maha Oya basin) · flows north
8.1 km² drain to this point - km 111 · Krmbulapitiya Oya (Attanagala Oya basin)
101 km² drain to this point - km 121 · 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 124 · Ja Ela (Attanagala Oya basin)
4.8 km² drain to this point - km 125 · Old Negombo channel (Kelani Ganga basin) · 3 crossings
4.9 km² drain to this point - km 130–135 · Old Negombo channel (Kelani Ganga basin) · 3 crossings
2.8 km² drain to this point - km 140 · Kelani Ganga · flows west
2,256 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 0.6 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)
And 3 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 |
|---|---|---|
| Thumpane | Watch | 13 |
Rain on route
×Moderate rain, up to 38.6 mm in 24 h
Rain gauges near your route
1234567891011121314151617
0140 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Kandy NTS (NBRI), 10.6 mm, moderate rain
- 2 Peradeniya, 16 mm, moderate rain
- 3 Muruthalawa (NBRI), 13.2 mm, moderate rain
- 4 Galagedara (NBRI), 14 mm, moderate rain
- 6 Walpolakanda (NBRI), 7.6 mm, light rain
- 7 Kurunegala, 18.4 mm, moderate rain
- 8 Polgahawela (NBRI), 4.4 mm, light rain
- 9 Maharachchimulla (NBRI), 5.6 mm, light rain
- 10 Dambadeniya (NBRI), 7 mm, light rain
- 11 Giriulla, ≥ 39.7 mm, moderate rain or more (incomplete day)
- 12 Warakapola (NBRI), 38.6 mm, moderate rain
- 14 Dunamale, 37.4 mm, moderate rain
- 15 Katunayake, 14.7 mm, moderate rain
- 17 Colombo, 8.6 mm, light rain
3 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 Kandy Four Gravets & Gangawata Korale, Harispattuwa, Thumpane, Pujapitiya +5.
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 +8 (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 +10 (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 and Colombo.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Kandy, 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 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.
- Colombo: Showers or thundershowers after 1.00p.m. Max 31°C, min 24°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments
×Crosses 18 named rivers · 5 basins · Kelani Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kelani Ganga: Rare here (1–2 days a month)
Mahaweli Ganga · Deduru Oya · Maha Oya …
PeradeniyaBelow Alert · River level 3.55 mDepartment’s thresholds: Alert 5, minor flood 7, major flood 9 m
River basins along this road
- km 0–15 · Mahaweli Ganga basin
- km 15–31 · Deduru Oya basin
- km 31–35 · Maha Oya basin
- km 35–52 · Deduru Oya basin
- km 52–77 · Maha Oya basin
- km 77–122 · Attanagala Oya basin
- km 122–140 · Kelani Ganga basin
Satellite rain over these basins
- Kelani 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 4 · Mahaweli Ganga · flows north-east
1,179 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 5.5 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 28 · 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 49 · Rekawa Ela (Deduru Oya basin) · flows west
15 km² drain to this point - km 54–56 · Gondara Ela (Maha Oya basin) · 2 crossings · flows south
4.2 km² drain to this point - km 61–62 · 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 69–71 · 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 74 · 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 · Diyaelle Oya (Attanagala Oya basin) · flows west
31 km² drain to this point - km 93–96 · Diyaelle Oya (Attanagala Oya basin) · 3 crossings · flows south-west
0.2 km² drain to this point - km 112 · Dondugam Oya (Attanagala Oya basin) · flows west
9.8 km² drain to this point - km 119 · Ja Ela (Attanagala Oya basin)
2.4 km² drain to this point - km 129 · Old Negombo channel (Kelani Ganga basin) · flows north-west
59 km² drain to this point - km 134 · Kelani Ganga · flows north
2,260 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 0.3 km upstream (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 137–139 · Heea Ela (Kelani Ganga basin) · 2 crossings
0.7 km² drain to this point
And 3 more unnamed streams on our map
Where this road runs beside a river
- km 17–18 · beside the Dik Oya
- km 69–70 · 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.