Watch on 93 km between Weligalla and Wellawaya
Around Weligalla and Gampola, km 8–67, km 122–159.
You reach it about Tue 09:30, 10 min after leaving, and are through it by Tue 14:00.
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.
- Kandy
Not listedkm 0–8 - Weligalla to Kothmale
Watchkm 8–66 - Welimada to Bandarawela
Not listedkm 66–124 - Ella to Wellawaya
Watchkm 124–159
Alert on 17 km between Hunnasgiriya and Ududumbara
Around Hunnasgiriya and Ududumbara, km 40–58.
Also: Watch on 26 km between Ududumbara and Wellawaya
You reach it about Tue 10:20, 1 h 10 min after leaving, and are through it by Tue 10:55.
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.
- Kandy to Medamahanuwara
Not listedkm 0–41 - Hunnasgiriya to Ududumbara
Alertkm 41–57 - between Ududumbara and Mahiyanganaya
Watchkm 57–74 - Mahiyanganaya to Nakkala
Not listedkm 74–174 - Wellawaya
Watchkm 174–183
Alert on 24 km in Walapane, Nildandahinna
km 49–74.
Also: Watch on 71 km between Adhikarigama and Wellawaya
You reach it about Tue 10:50, 1 h 40 min after leaving, and are through it by Tue 11:35.
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.
- Kandy
Not listedkm 0–32 - Adhikarigama
Watchkm 32–50 - Alertkm 50–74
- near Meegahakiula
Not listedkm 74–86 - Meegahakiula
Watchkm 86–102 - Badulla to Hali-Ela
Not listedkm 102–131 - Ella to Wellawaya
Watchkm 131–168
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–Wellawaya road
The fastest road we know from Kandy to Wellawaya is 159 km, about 4 h 50 min, via Gampola, Welimada.
Main roads on it: Nuwara Eliya Road (50 km), Wellawaya-Ella-Kumbalwela Road (30 km), Bandarawela-Welimada Road (20 km).
We show 3 roads between them, fastest first.
DS divisions on this road
It passes through 10 DS divisions in 4 districts, in travel order:
- Kandy Four Gravets & Gangawata Korale
- Udunuwara
- Udapalatha
- Kothmale East
- Nuwara Eliya
- Welimada
- Bandarawela
- Haputale
- Ella
- Wellawaya
Past NBRI bulletins
Most often listed on this road, in the 41 NBRI bulletins we have passed on since Sun 20 Sept: Udunuwara (20), Kothmale East (14), Udapalatha (14).
A record of past bulletins, not a forecast. Not being listed doesn’t mean safe.
Steep terrain
About 21 km of it runs through steep terrain (slopes over 30° beside the road). The longest stretch is near Ella.
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.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Udunuwara | Watch | 8 |
| Udapalatha | Watch | 16 |
| Kothmale East | Watch | 38 |
| Ella | Watch | 123 |
| Wellawaya | Watch | 145 |
Rain on route
×Moderate rain, up to 16 mm in 24 h
Rain gauges near your route
Key
- 2 Peradeniya, 16 mm, moderate rain
- 9 Nuwara Eliya, 9.4 mm, light rain
- 17 Bandarawela, 4.7 mm, light rain
18 gauges not reporting.
Gauge coverage: most of the route.
NBRI's warning stays in force after rain eases.
Satellite estimate
- Last 3 days: among the wettest 5% of 3-day periods since 2000 in Kandy Four Gravets & Gangawata Korale, Udunuwara, Udapalatha, Kothmale East +1.
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, Udunuwara, Udapalatha, Kothmale East +6 (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, Udunuwara, Udapalatha, Kothmale East +6 (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, Nuwara Eliya, Badulla and Moneragala.
- 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, Nuwara Eliya, Badulla and Moneragala 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, Nuwara Eliya, Badulla and Moneragala 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 10 named rivers · 2 basins · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Mahaweli Ganga · Kirindi Oya
River basins along this road
- km 0–131 · Mahaweli Ganga basin
- km 132–159 · Kirindi Oya 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 6–10 · Mahaweli Ganga · 4 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 13 · Geli Oya (Mahaweli Ganga basin) · flows north-east
23 km² drain to this point - km 20–21 · Mahaweli Ganga · 2 crossings · flows north-east
931 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 13.9 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, 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 26–27 · Atabaga Oya (Mahaweli Ganga basin) · 2 crossings · flows south-west
44 km² drain to this point - km 39 · Gamburu Oya (Mahaweli Ganga basin) · flows south-west
0.3 km² drain to this point - km 65 · Puna Oya (Mahaweli Ganga basin) · flows west
6.8 km² drain to this point - km 98–100 · Dougolla Oya (Mahaweli Ganga basin) · 3 crossings · flows north
62 km² drain to this point - km 112–114 · Uma Oya (Mahaweli Ganga basin) · 4 crossings · flows north
155 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 125–126 · Badulu Oya (Mahaweli Ganga basin) · 2 crossings · flows north
3.0 km² drain to this point - km 134–136 · Kirindi Oya · 4 crossings · flows east
18 km² drain to this point - km 152–157 · Kirindi Oya · 4 crossings · flows south-west
89 km² drain to this point
Wellawaya, an Irrigation Department gauge 15.6 km downstream (179 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): at least 8.5 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 1.66 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4.4, minor flood 5.4, major flood 5.9 m) - km 154 · Kunapad Ara (Kirindi Oya basin) · flows south
98 km² drain to this point
And 1 more unnamed stream on our map
Where this road runs beside a river
- km 113–114 · beside the Uma Oya
- km 125–127 · beside the Badulu Oya
- km 133–136 · beside the Kirindi 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 |
|---|---|---|
| Udadumbara | Alert | 41 |
| Minipe | Watch | 57 |
| Wellawaya | Watch | 174 |
Rain on route
×Moderate rain, up to 12.7 mm in 24 h
Rain gauges near your route
Key
- 2 Katugastota, 1.2 mm, light rain
- 15 Nakkala, 3.3 mm, light rain
- 16 Monaragala, 12.7 mm, moderate rain
- 18 Wellawaya, ≥ 8.5 mm, light rain or more (incomplete day)
14 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, Kundasale, Pathadumbara, Medadumbara.
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, Kundasale, Pathadumbara, Medadumbara +10 (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, Kundasale, Pathadumbara, Medadumbara +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, Badulla and Moneragala.
- 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, Badulla and Moneragala 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, Badulla and Moneragala 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 18 named rivers · 5 basins · rain upstream of Mahaweli Ganga: Rare here (1–2 days a month)
Mahaweli Ganga · Gal Oya · Kumbukkan Oya …
River basins along this road
- km 0–106 · Mahaweli Ganga basin
- km 106–107 · Mahaweli Ganga basin
- km 107–134 · Gal Oya basin
- km 134–163 · Kumbukkan Oya basin
- km 163–177 · Manik Ganga basin
- km 177–183 · Kirindi Oya 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 5 · Mahaweli Ganga · flows south-east
1,320 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Peradeniya, an Irrigation Department gauge 12.4 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, 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 20–21 · Huliu Ganga (Mahaweli Ganga basin) · 2 crossings · flows east
133 km² drain to this point - km 43 · Ma Oya (Mahaweli Ganga basin) · flows south
1.9 km² drain to this point - km 46 · Kahatagolla Ela (Mahaweli Ganga basin) · flows south-east
1.8 km² drain to this point - km 55 · Kandekumbra Oya (Mahaweli Ganga basin) · flows north-east
1.0 km² drain to this point - km 69 · Nicatlyadda Oya (Mahaweli Ganga basin) · flows north-west
87 km² drain to this point - km 74 · Mahaweli Ganga · flows north
4,071 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Weraganthota, an Irrigation Department gauge 2.5 km upstream (4,059 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): no complete 24-hour total (11 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 09:01.
River level -2.44 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 6, major flood 8 m) - km 80 · Dambarawa Oya (Mahaweli Ganga basin)
29 km² drain to this point - km 82 · Rathmal Kandura (Mahaweli Ganga basin) · flows west
2.2 km² drain to this point - km 88 · Hepola Oya (Mahaweli Ganga basin) · flows south
85 km² drain to this point - km 99–102 · Hepola Oya (Mahaweli Ganga basin) · 4 crossings · flows north-west
29 km² drain to this point - km 120 · Gala Oya (Gal Oya basin) · flows east
35 km² drain to this point - km 121 · Gal Oya · flows north
8.6 km² drain to this point - km 142 · Uluassa Ara (Kumbukkan Oya basin) · flows west
26 km² drain to this point - km 148–158 · Kumbukkan Oya · 10 crossings · flows south-east
222 km² drain to this point
Nakkala, an Irrigation Department gauge 0.7 km upstream (221 km² upstream): 3.3 mm in the 24 hours to 10 Nov, 08:30 (Light); 0 mm in the 3 hours to 10 Nov, 09:02.
River level 1.21 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 6, major flood 7.5 m) - km 167 · Manik Ganga · flows south
151 km² drain to this point · rain over that area, Last 24 hours: Unusual here (3 days a month) - km 170 · Kuda Oya (Manik Ganga basin) · flows south
25 km² drain to this point - km 174 · Pilhiyan Ara (Manik Ganga basin) · flows south
0.8 km² drain to this point - km 182 · Kirindi Oya · flows south
143 km² drain to this point
Wellawaya, an Irrigation Department gauge 5.8 km downstream (179 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): at least 8.5 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 1.66 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4.4, minor flood 5.4, major flood 5.9 m) - km 183 · Radapola Oya (Kirindi Oya basin) · flows south-east
16 km² drain to this point
And 11 more unnamed streams on our map
Where this road runs beside a river
- km 99–102 · beside the Hepola Oya
- km 151–154 · beside the Kumbukkan Oya
- km 156–157 · beside the Kumbukkan Oya
- km 158–159 · beside the Kumbukkan 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 |
|---|---|---|
| Walapane | Alert | 50 |
| Nildandahinna | Alert | 60 |
| Hanguranketha | Watch | 32 |
| Mathurata | Watch | 48 |
| Meegahakivula | Watch | 86 |
| Ella | Watch | 131 |
| Wellawaya | Watch | 154 |
Rain on route
×Moderate rain, up to 12.2 mm in 24 h
Rain gauges near your route
Key
- 6 Victoria, 0 mm, dry
- 8 Randenigala, 12.2 mm, moderate rain
- 9 Rantambe, 7.8 mm, light rain
- 11 Thaldena, 10.2 mm, moderate rain
- 13 Badulla, 12.1 mm, moderate 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 Kandy Four Gravets & Gangawata Korale, Pathahewaheta, Hanguranketha, Mathurata +1.
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, Pathahewaheta, Hanguranketha, Mathurata +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, Pathahewaheta, Hanguranketha, Mathurata +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 Kandy, Nuwara Eliya, Badulla and Moneragala.
- 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, Nuwara Eliya, Badulla and Moneragala 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, Nuwara Eliya, Badulla and Moneragala 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 6 named rivers · 2 basins
Mahaweli Ganga · Kirindi Oya
River basins along this road
- km 0–140 · Mahaweli Ganga basin
- km 141–168 · Kirindi Oya 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 28–32 · Maha Oya (Mahaweli Ganga basin) · 5 crossings · flows north
108 km² drain to this point - km 73 · Uma Oya (Mahaweli Ganga basin) · flows north
727 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month) - km 81 · Badulu Oya (Mahaweli Ganga basin) · flows north
404 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
Thaldena, an Irrigation Department gauge 19.1 km upstream (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, 09:02.
River level 0.87 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 5 m) - km 102–111 · Badulu Oya (Mahaweli Ganga basin) · 7 crossings · flows north
279 km² drain to this point · rain over that area, Last 3 days: Unusual here (3 days a month)
Thaldena, an Irrigation Department gauge 0.1 km upstream (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, 09:02.
River level 0.87 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 5 m) - km 121–128 · Badulu Oya (Mahaweli Ganga basin) · 6 crossings · flows east
126 km² drain to this point
Thaldena, an Irrigation Department gauge 18.6 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, 09:02.
River level 0.87 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 3, minor flood 4, major flood 5 m) - km 132 · Nawela Oya (Mahaweli Ganga basin) · flows south-west
59 km² drain to this point - km 133–135 · Badulu Oya (Mahaweli Ganga basin) · 3 crossings · flows north
36 km² drain to this point - km 143–145 · Kirindi Oya · 4 crossings · flows east
18 km² drain to this point - km 160–166 · Kirindi Oya · 4 crossings · flows south-west
89 km² drain to this point
Wellawaya, an Irrigation Department gauge 15.6 km downstream (179 km² upstream · rain over that area, Last 3 days: Unusual here (3 days a month)): at least 8.5 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 1.66 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4.4, minor flood 5.4, major flood 5.9 m) - km 163 · Kunapad Ara (Kirindi Oya basin) · flows south
98 km² drain to this point
And 6 more unnamed streams on our map
Where this road runs beside a river
- km 28–30 · beside the Maha Oya
- km 107–108 · beside the Badulu Oya
- km 133–134 · beside the Badulu Oya
- km 142–145 · beside the Kirindi 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.