Watch on 70 km between Gampola and Kothmale
Around Gampola and Pussellawa, km 79–150.
You reach it about Tue 12:40, 2 h after leaving, and are through it by Tue 14:50.
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.
- Dambulla to Madawala
Not listedkm 0–79 - Gampola to Kothmale
Watchkm 79–150 - Welimada
Not listedkm 150–183
Alert on 54 km between Padiyapelella and Udapussellawa
Around Padiyapelella and Walapane, km 136–191.
Also: Watch on 24 km between Galagedara and Padiyapelella
You reach it about Tue 14:20, 3 h 30 min after leaving, and are through it by Tue 16:10.
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.
- Dambulla to Mawathagama
Not listedkm 0–72 - Galagedara
Watchkm 72–79 - Hedeniya to Kandy
Not listedkm 79–119 - Hanguranketha to Rikillagaskada
Watchkm 119–136 - Padiyapelella to Udapussellawa
Alertkm 136–190 - Welimada
Not listedkm 190–211
Watch on 16 km near Meegahakiula
Around Meegahakiula, km 187–188, km 192–209.
You reach it about Tue 15:30, 4 h 40 min after leaving, and are through it by Tue 16:05.
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.
- Dambulla
Not listedkm 0–26 - Kaduruwela to Dehiattakandiya
Outside NBRI’s landslide area: the bulletin says nothing herekm 26–147 - Girandurukotte to Mahiyanganaya
Not listedkm 147–192 - Meegahakiula
Watchkm 192–208 - Badulla to Welimada
Not listedkm 208–254
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 Dambulla–Welimada road
The fastest road we know from Dambulla to Welimada is 184 km, about 5 h 10 min, via Madawala, Gampola.
Main roads on it: Nuwara Eliya Road (51 km), Kandy-Jaffna Road (45 km), Nuwara Eliya-Badulla Road (19 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:
- Dambulla
- Naula
- Pallepola
- Matale
- Yatawatta
- Ukuwela
- Pathadumbara
- Kundasale
- Kandy Four Gravets & Gangawata Korale
- Harispattuwa
- Yatinuwara
- Udunuwara
- Udapalatha
- Kothmale East
- Nuwara Eliya
- Welimada
Past NBRI bulletins
Most often listed on this road, in the 41 NBRI bulletins we have passed on since Sun 20 Sept: Yatinuwara (27), Udunuwara (20), Kothmale East (14).
A record of past bulletins, not a forecast. Not being listed doesn’t mean safe.
Steep terrain
About 10 km of it runs through steep terrain (slopes over 30° beside the road). The longest stretch is near Kothmale.
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, 05:30. Checked Tue 10 Nov, 10:50.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Yatinuwara | Watch | 79 |
| Udunuwara | Watch | 83 |
| Udapalatha | Watch | 99 |
| Kothmale East | Watch | 121 |
Rain on route
×Fairly heavy rain, up to 55.5 mm in 24 h
Rain gauges near your route
Key
- 1 Naula (NBRI), 0.8 mm, dry
- 2 Bowatenna, 55.5 mm, fairly heavy rain
- 5 Yatawattha (NBRI), 6.6 mm, light rain
- 6 Ukuwela, 6.7 mm, light rain
- 9 Katugastota, 1.2 mm, light rain
- 10 Kandy NTS (NBRI), 10.6 mm, moderate rain
- 11 Peradeniya, 16 mm, moderate rain
- 13 Daskara (NBRI), 1.2 mm, light rain
- 18 Nuwara Eliya, 9.4 mm, light rain
- 22 Medawela (NBRI), 6.6 mm, light rain
13 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 Ukuwela, Pathadumbara, Kundasale, Kandy Four Gravets & Gangawata Korale +6.
Rain outlook (computer model) · Next day: Chance of a rare wet day
- Next day: a chance of a wet day of the kind that comes about 1–2 days a month in Dambulla, Naula, Pallepola, Matale +12 (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 Dambulla, Naula, Pallepola, Matale +12 (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 Matale, Kandy, Nuwara Eliya and Badulla.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Kandy, Matale, Nuwara Eliya and Badulla on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
- Showers may occur in the coastal areas of the Southern Province during the morning.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Covers Kandy, Matale, Nuwara Eliya and Badulla on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts during the early hours of the morning.
- Forecast for the main cities, Tuesday, 10 November 2026 (issued 9 Nov, 16:00)
- Kandy: Showers or thundershowers after 1.00p.m. Max 30°C, min 24°C.
- Nuwara Eliya: Showers or thundershowers after 1.00p.m. Max 22°C, min 13°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments
×Crosses 11 named rivers · 2 basins · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Kala Oya · Mahaweli Ganga
River basins along this road
- km 0–15 · Kala Oya basin
- km 15–184 · Mahaweli Ganga basin
Satellite rain over these basins
- 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 22 · Nalanda Oya (Mahaweli Ganga basin) · flows north-east
131 km² drain to this point - km 29 · Heenganga Ela (Mahaweli Ganga basin) · flows east
10 km² drain to this point - km 54 · Sudu Ganga (Mahaweli Ganga basin) · flows north
17 km² drain to this point - km 62 · Dan Oya (Mahaweli Ganga basin) · flows south
4.4 km² drain to this point - km 63 · Sudu Ganga (Mahaweli Ganga basin) · flows south-west
1.0 km² drain to this point - km 73 · Mahaweli Ganga · 2 crossings · 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 9.4 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, 10:07.
River level 3.4 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 7, major flood 9 m) - km 78–85 · Mahaweli Ganga · 7 crossings · flows north-west
1,068 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 2.9 km downstream (1,143 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 16 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 10:07.
River level 3.4 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 7, major flood 9 m) - km 89–92 · Geli Oya (Mahaweli Ganga basin) · 2 crossings · flows north-east
12 km² drain to this point - km 90 · Mada Ela (Mahaweli Ganga basin) · flows north-west
20 km² drain to this point - km 105 · Mahaweli Ganga · flows north-east
900 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 15.4 km downstream (1,143 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 16 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 10:07.
River level 3.4 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 7, major flood 9 m) - km 110–111 · Atabaga Oya (Mahaweli Ganga basin) · 2 crossings · flows south
44 km² drain to this point - km 123 · Gamburu Oya (Mahaweli Ganga basin) · flows south-west
0.3 km² drain to this point - km 148 · Puna Oya (Mahaweli Ganga basin) · flows west
6.8 km² drain to this point - km 182–183 · Dougolla Oya (Mahaweli Ganga basin) · 3 crossings · flows north
162 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
And 8 more unnamed streams on our map
Where this road runs beside a river
- km 72–74 · 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 |
|---|---|---|
| Walapane | Alert | 136 |
| Nildandahinna | Alert | 174 |
| Thumpane | Watch | 72 |
| Hanguranketha | Watch | 119 |
| Mathurata | Watch | 128 |
Rain on route
×Fairly heavy rain, up to 55.2 mm in 24 h
Rain gauges near your route
Key
- 1 Naula (NBRI), 0.8 mm, dry
- 4 Lihinivehera (NBRI), 11 mm, moderate rain
- 5 Kurunegala, 18.4 mm, moderate rain
- 11 Katugastota, 1.2 mm, light rain
- 12 Kandy NTS (NBRI), 10.6 mm, moderate rain
- 14 Marassana (NBRI), 0 mm, dry
- 15 Hanguranketha (NBRI), 6 mm, light rain
- 18 Munwatta (NBRI), 0 mm, dry
- 19 Mahawewa (NBRI), 15 mm, moderate rain
- 20 Puswelpitiya (NBRI), 23 mm, moderate rain
- 21 Ragala Liddesdate (NBRI), 54.2 mm, fairly heavy rain
- 23 Sooriyagaha pathana (NBRI), 55.2 mm, fairly heavy rain
- 25 Sapugolla (NBRI), 2.6 mm, light rain
13 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 Mallawapitiya, Mawathagama, Pujapitiya, Thumpane +6.
Rain outlook (computer model) · Next day: Chance of a rare wet day
- Next day: a chance of a wet day of the kind that comes about 1–2 days a month in Dambulla, Galewela, Ibbagamuwa, Mallawapitiya +12 (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 Dambulla, Galewela, Ibbagamuwa, Mallawapitiya +12 (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 Matale, Kurunegala, Kandy, Nuwara Eliya and Badulla.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Kandy, Matale, Nuwara Eliya and Badulla on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
- Showers may occur in the coastal areas of the Southern Province during the morning.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Covers Kandy, Matale, Nuwara Eliya, Badulla and Kurunegala on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts during the early hours of the morning.
- Forecast for the main cities, Tuesday, 10 November 2026 (issued 9 Nov, 16:00)
- Kandy: Showers or thundershowers after 1.00p.m. Max 30°C, min 24°C.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments
×Crosses 13 named rivers · 3 basins · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Kala Oya · Deduru Oya · Mahaweli Ganga
River basins along this road
- km 0–22 · Kala Oya basin
- km 22–77 · Deduru Oya basin
- km 77–211 · Mahaweli Ganga basin
Satellite rain over these basins
- Deduru Oya basin · Last 3 days: Unusual here (3 days a month)
- Mahaweli Ganga basin · Last 3 days: Unusual here (3 days a month)
A whole-basin satellite average against that basin’s own record since 2000, not the area upstream of any one point. Satellites under-read hill rain. Not a warning.
Where this road crosses a river or stream
- km 9 · Welamitiya Oya (Kala Oya basin) · flows west
17 km² drain to this point - km 11 · Mala Oya (Kala Oya basin) · flows north-west
39 km² drain to this point - km 30 · Kimbulwana Oya (Deduru Oya basin) · flows north-west
44 km² drain to this point - km 48 · Deduru Oya · flows north-west
7.5 km² drain to this point - km 55–57 · Kaspatu Oya (Deduru Oya basin) · 3 crossings · flows north-west
104 km² drain to this point - km 64 · Kaspatu Oya (Deduru Oya basin) · flows north-west
41 km² drain to this point - km 70–75 · Dik Oya (Deduru Oya basin) · 4 crossings · flows north-west
2.2 km² drain to this point - km 71 · Narankaha Ela (Deduru Oya basin) · flows south-west
16 km² drain to this point - km 88 · 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, 10:07.
River level 3.4 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 7, major flood 9 m) - km 119 · Maha Oya (Mahaweli Ganga basin) · flows north
108 km² drain to this point - km 171 · Halgran Oya (Mahaweli Ganga basin) · flows north-east
24 km² drain to this point - km 174 · Obada Oya (Mahaweli Ganga basin) · flows east
0.3 km² drain to this point - km 199 · Hal Oya (Mahaweli Ganga basin) · flows south
51 km² drain to this point - km 211 · Dougolla Oya (Mahaweli Ganga basin) · flows north
162 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
And 17 more unnamed streams on our map
Where this road runs beside a river
- km 55–56 · beside the Kaspatu Oya
- km 56–57 · beside the Kaspatu Oya
- km 74–75 · beside the Dik 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 |
|---|---|---|
| Meegahakivula | Watch | 188 |
Rain on route
×Moderate rain, up to 29.6 mm in 24 h
Rain gauges near your route
Key
- 1 Polonnaruwa, 9.6 mm, light rain
- 2 Manampitiya, ≥ 4.8 mm, light rain or more (incomplete day)
- 3 Hettipola (NBRI), 0 mm, dry
- 5 Rantambe, 7.8 mm, light rain
- 6 Meegahakiwula (NBRI), 29.6 mm, moderate rain
- 7 Thaldena, 10.2 mm, moderate rain
- 9 Badulla, 12.1 mm, moderate rain
6 gauges not reporting.
Gauge coverage: part of the route.
NBRI's warning stays in force after rain eases.
Satellite estimate
- Last 3 days: among the wettest 10% of 3-day periods since 2000 in Meegahakivula, Kandaketiya, Soranathota, Badulla +2.
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 Dambulla, Hingurakgoda, Dehiattakandiya, Mahiyanganaya +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 Dambulla, Hingurakgoda, Thamankaduwa, Dimbulagala +9 (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 13 Nov, 05:30)
- "Not signalled" never means dry or safe. This is a computer model, not a warning, and it never changes NBRI's levels. Like the satellite, it reads hill-country rain low and can miss heavy local downpours.
- ECMWF ensemble forecast (open data, CC BY 4.0), run 9 Nov, 17:30, compared with each division's own satellite record.
Weather forecast (Met Dept)
×No advisory for this road
- No Department of Meteorology advisory is in force for Matale, Polonnaruwa, Ampara and Badulla.
- Forecast issued 10 Nov, 05:30
- Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
- Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
- Covers Matale and Badulla on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
- Showers may occur in the coastal areas of the Southern Province during the morning.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Covers Matale and Badulla on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts during the early hours of the morning.
- 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 20 named rivers · 3 basins
Kala Oya · Yan Oya · Mahaweli Ganga
River basins along this road
- km 0–21 · Kala Oya basin
- km 21–25 · Yan Oya basin
- km 26–33 · Mahaweli Ganga basin
- km 33–35 · Yan Oya basin
- km 35–254 · Mahaweli Ganga basin
Satellite rain over these basins
- 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 32 · Kongaha Ela (Mahaweli Ganga basin) · flows east
0.3 km² drain to this point - km 41 · Talkota Oya (Mahaweli Ganga basin) · flows south
17 km² drain to this point - km 53 · Aggala Wan Oya (Mahaweli Ganga basin) · flows north
0.3 km² drain to this point - km 66 · Giritale Oya (Mahaweli Ganga basin) · flows north
29 km² drain to this point - km 71 · Divuiankadawala Ela (Mahaweli Ganga basin) · flows north-east
2.4 km² drain to this point - km 89 · Gailella Kotaliya (Mahaweli Ganga basin) · flows north-east
1,598 km² drain to this point - km 91 · Mahaweli Ganga · flows north
5,591 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
Manampitiya, an Irrigation Department gauge 0.3 km upstream (5,591 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): at least 4.8 mm in the 24 hours to 10 Nov, 08:30 (2 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 10:04.
River level 1.2 m · Below Alert · rising over about 3 hours (Department’s thresholds: Alert 3, minor flood 4.3, major flood 6 m) - km 101 · Horow Ela (Mahaweli Ganga basin) · flows north-west
7.8 km² drain to this point - km 118 · Moogamana Ela / Mawana Ela / Hungamra Ela (Mahaweli Ganga basin) · flows north
163 km² drain to this point - km 140 · Kuda Oya (Mahaweli Ganga basin) · flows north-west
52 km² drain to this point - km 146 · Diiyawidda Oya (Mahaweli Ganga basin) · flows west
15 km² drain to this point - km 148 · Ulhitl Oya (Mahaweli Ganga basin) · flows north
331 km² drain to this point - km 163 · Aluttarama Oya (Mahaweli Ganga basin)
39 km² drain to this point - km 173 · Ridikotaliya Kandura (Mahaweli Ganga basin)
5.8 km² drain to this point - km 176 · Galaweln Kandura (Mahaweli Ganga basin) · flows north-west
22 km² drain to this point - km 176 · Dambarawa Oya (Mahaweli Ganga basin)
22 km² drain to this point - km 186 · Meemul Kandura (Mahaweli Ganga basin) · flows south-west
269 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 208–217 · Badulu Oya (Mahaweli Ganga basin) · 7 crossings · flows north
216 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
Thaldena, an Irrigation Department gauge 8.7 km downstream (279 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): 10.2 mm in the 24 hours to 10 Nov, 08:30 (Moderate); 0 mm in the 3 hours to 10 Nov, 10:03.
River level 0.84 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 5 m) - km 226–230 · Badulu Oya (Mahaweli Ganga basin) · 3 crossings · flows north
121 km² drain to this point - km 247–248 · Uma Oya (Mahaweli Ganga basin) · 2 crossings · flows north
370 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 249–253 · Dougolla Oya (Mahaweli Ganga basin) · 3 crossings · flows south-east
164 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
And 2 more unnamed streams on our map
Where this road runs beside a river
- km 212–214 · beside the Badulu Oya
Rivers and basins come from our own map of Sri Lanka’s river network. Flow direction, where shown, is worked out from the height of the land. This is orientation only, not a flood warning.
The area draining to a crossing is worked out from a terrain model (about 90 m cells) and is approximate. The rain over it is the satellite average for that same area, against its own record since 2000. Areas under about 150 km² are smaller than the satellite can see, so they show no rain.
River levels are the Irrigation Department’s own readings at its gauge, against its own thresholds. This is not a flood warning: flood warnings come from the Irrigation Department and DMC.