Leaving
Level 1 · WatchTue 10 Nov
Watch on 69 km between Kaduwela and Kandy
Around Warakapola and Kegalle, km 34–44, km 50–67, km 155–160 and 3 more.
You reach it about Tue 10:20, 30 min after leaving, and are through it by Tue 13:35.
NBRI’s bulletin is valid until Tue 20:00, so it covers that time.
NBRI’s advice, as issued
Since the rainfall within the past 24 hours has exceeded 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 · 223 km~4 h 10 min
NBRI WatchNot listedRiver crossingRain gaugeNo report
- Galle
Not listedkm 0–34 - Watchkm 34–44
- Not listedkm 44–51
- Watchkm 51–66
- Kaduwela to Pasyala
Not listedkm 66–162 - Warakapola
Watchkm 162–175 - near Kegalle
Not listedkm 175–180 - Kegalle
Watchkm 180–189 - near Kegalle
Not listedkm 189–194 - between Kegalle and Kandy
Watchkm 194–216 - Kandy
Not listedkm 216–223
LandslideWatch6 stretches · NBRI’s adviceRainHeavy rain, up to 126.4 mm in 24 hLast 3 days, satellite: About 1–2 days a month are this wet hereWeatherShowers or thundershowers after 1.00p.mGalle 31° / 24° · Kandy 30° / 24°Rivers24 crossingsBaddegama: Minor flood level · rising · Gin Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kalu Ganga: Rare here (1–2 days a month)
Level 1 · WatchTue 10 Nov
Watch on 31 km between Kaduwela and Hedeniya
Around Galagedara and Hedeniya, km 31–41, km 47–64, km 217–226.
You reach it about Tue 10:25, 40 min after leaving, and are through it by Tue 13:45.
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 · 239 km~4 h 20 min
NBRI WatchNot listedRiver crossingRain gaugeNo report
- Galle
Not listedkm 0–32 - Watchkm 32–41
- Not listedkm 41–48
- Watchkm 48–63
- Kaduwela to Mawathagama
Not listedkm 63–218 - Galagedara
Watchkm 218–225 - Hedeniya to Kandy
Not listedkm 225–239
LandslideWatch3 stretches · NBRI’s adviceRainHeavy rain, up to 126.4 mm in 24 hLast 3 days, satellite: About 1–2 days a month are this wet hereWeatherShowers or thundershowers after 1.00p.mGalle 31° / 24° · Kandy 30° / 24°Rivers30 crossingsBaddegama: Minor flood level · rising · Gin Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kalu 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 Galle–Kandy road
The fastest road we know from Galle to Kandy is 223 km, about 4 h 10 min, via Warakapola, Kegalle.
Main roads on it: Southern Expressway (96 km), Colombo-Kandy Road (86 km), Outer Circular Highway (18 km).
We show 2 roads between them, fastest first.
DS divisions on this road
It passes through 30 DS divisions in 6 districts, in travel order:
- Galle Four Gravets
- Akmeemana
- Bope-Poddala
- Baddegama
- Welivitiya-Divithura
- Karandeniya
- Elpitiya
- Benthota
- Walallavita
- Mathugama
- Dodangoda
- Kalutara
- Millaniya
- Bandaragama
- Horana
- Homagama
- Maharagama
- Kaduwela
- Biyagama
- Mahara
- Gampaha
- Attanagalla
- Mirigama
- Warakapola
- Galigamuwa
- Kegalle
- Rambukkana
- Mawanella
- Yatinuwara
- Kandy Four Gravets & Gangawata Korale
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 5 km of it runs through steep terrain (slopes over 30° beside the road).
Terrain beside the road, from a satellite elevation model: not the road’s gradient and not a landslide hazard rating.
How to read this
- Not an official service. NBRI’s warnings are passed on as issued.
- Rain levels compare each division with its own satellite record since 2000. Satellites can miss heavy local downpours.
- Gauge sources: Department of Meteorology and Irrigation Department gauge readings, passed on as published. Met gauge sites are approximate. Compared with each division's own satellite record since 2000. This is not a warning and does not replace NBRI's levels. Satellites can miss heavy local downpours, so it never means a road is safe. Satellite data up to 10 Nov, 04:30. Checked Tue 10 Nov, 09:50.
Was this page useful?Thanks, noted.
Landslide (NBRI)
×| Warned DS division | Level | From km |
|---|---|---|
| Karandeniya | Watch | 34 |
| Elpitiya | Watch | 38 |
| Walallavita | Watch | 51 |
| Mathugama | Watch | 57 |
| Warakapola | Watch | 156 |
| Kegalle | Watch | 180 |
| Mawanella | Watch | 194 |
| Yatinuwara | Watch | 205 |
Rain on route
×Heavy rain, up to 126.4 mm in 24 h
Rain gauges near your route
123456789101112131415161718192021222324252627
0223 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Galle, 0.7 mm, dry
- 2 Wanduramba (NBRI), 0 mm, dry
- 3 Baddegama (NBRI), 43 mm, moderate rain
- 4 Baddegama, ≥ 44.6 mm, moderate rain or more (incomplete day)
- 5 Elpitiya (NBRI), 39 mm, moderate rain
- 6 Walallavita MV (NBRI), 64.2 mm, fairly heavy rain
- 7 Halwala (NBRI), 83.4 mm, fairly heavy rain
- 8 Matugama (NBRI), 126.4 mm, heavy rain
- 9 Putupaula, ≥ 1.5 mm, light rain or more (incomplete day)
- 10 Horana (NBRI), 0 mm, dry
- 11 Ratmalana, 14.6 mm, moderate rain
- 12 NBRI (NBRI), 0 mm, dry
- 13 Hanwella, 3 mm, light rain
- 15 Dunamale, 37.4 mm, moderate rain
- 17 Warakapola (NBRI), 38.6 mm, moderate rain
- 19 Alawwa (NBRI), 5.8 mm, light rain
- 21 Kegalu MV (NBRI), 6.4 mm, light rain
- 22 Deewela (NBRI), 11.6 mm, moderate rain
- 23 Ussapitiya (NBRI), 10.4 mm, moderate rain
- 24 Anwarama (NBRI), 14.8 mm, moderate rain
- 25 Kadugannawa (NBRI), 31.8 mm, moderate rain
- 26 Peradeniya, 16 mm, moderate rain
- 27 Kandy NTS (NBRI), 10.6 mm, moderate 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 Welivitiya-Divithura, Karandeniya, Elpitiya, Benthota +13.
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 Mirigama, Warakapola, Galigamuwa, Kegalle +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 Attanagalla, Mirigama, Warakapola, Galigamuwa +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 Galle, Kalutara, Colombo, Gampaha, Kegalle and Kandy.
- 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, Gampaha, Kalutara and Galle 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.
- Covers Galle on this road: 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, Gampaha, Kalutara and Galle 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)
- Galle: Showers or thundershowers after 1.00p.m. Max 31°C, min 24°C.
- 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 23 named rivers · 10 basins · Gin Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kalu Ganga: Rare here (1–2 days a month) · Minor flood level
Gin Ganga · P2 · Madampe Lake …
BaddegamaMinor flood level · River level 4.18 mDepartment’s thresholds: Alert 3.5, minor flood 4, major flood 5 m
River basins along this road
- km 0–1 · Gin Ganga basin
- km 1–6 · P2 basin
- km 6–37 · Gin Ganga basin
- km 37–39 · Madampe Lake basin
- km 39–68 · Bentota Ganga basin
- km 68–80 · Kalu Ganga basin
- km 81–107 · Bolgoda Ganga basin
- km 107–129 · Kelani Ganga basin
- km 129–162 · Attanagala Oya basin
- km 162–207 · Maha Oya basin
- km 207–223 · Mahaweli Ganga basin
Satellite rain over these basins
- Gin Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Madampe Lake basin · Last 3 days: Rare here (1–2 days a month)
- Bentota 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)
- Kelani Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Bolgoda Ganga basin · Last 3 days: Unusual here (3 days a month)
- Attanagala Oya basin · Last 3 days: Unusual here (3 days a month)
- Maha 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 · Maha Dola (Gin Ganga basin) · flows west
19 km² drain to this point - km 19 · Keembiya Ela (Gin Ganga basin) · flows north-west
14 km² drain to this point - km 25 · Gin Ganga · flows west
681 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Baddegama, an Irrigation Department gauge 2.6 km downstream (709 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 44.6 mm in the 24 hours to 10 Nov, 08:30 (2 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 09:05.
River level 4.18 m · Minor flood level · rising over about 3 hours (Department’s thresholds: Alert 3.5, minor flood 4, major flood 5 m) - km 47 · Uragas Ela (Bentota Ganga basin)
5.2 km² drain to this point - km 51 · Bentota_Gnga (Bentota Ganga basin)
363 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 59 · Welipenne Ganga (Bentota Ganga basin)
131 km² drain to this point - km 72 · Iriyangala Ela (Kalu Ganga basin)
9.7 km² drain to this point - km 80 · Kalu Ganga
2,762 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 81 · Keppu Ela (Bolgoda Ganga basin)
0.4 km² drain to this point - km 88 · Panape Ela (Bolgoda Ganga basin)
66 km² drain to this point - km 95 · Maha Oya (Bolgoda Ganga basin) · flows west
27 km² drain to this point - km 100 · Nudun Ela (Bolgoda Ganga basin) · flows west
35 km² drain to this point - km 113 · Maha Ela (Kelani Ganga basin) · 2 crossings
15 km² drain to this point - km 116 · Kelani Ganga · flows west
2,126 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Nagalagam Street, an Irrigation Department gauge 13.8 km downstream (2,256 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): no complete 24-hour total (1 hourly reading missing); 0 mm in the 3 hours to 10 Nov, 09:05.
River level 2.7 ft · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 4, minor flood 5, major flood 7 ft) - km 132–134 · Uruwal Oya (Attanagala Oya basin) · 2 crossings · flows west
42 km² drain to this point - km 138 · 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 152 · Diyaelle Oya (Attanagala Oya basin) · flows north-west
21 km² drain to this point - km 164–166 · Kuda Oya (Maha Oya basin) · 2 crossings · flows north
54 km² drain to this point - km 173 · Rogala Oya (Maha Oya basin) · flows north-east
3.6 km² drain to this point - km 174–177 · Galigamuwa Oya (Maha Oya basin) · 2 crossings · flows west
8.5 km² drain to this point - km 197 · 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 199–201 · Hingul Oya (Maha Oya basin) · 3 crossings · flows west
39 km² drain to this point - km 209–213 · Nanu Oya (Mahaweli Ganga basin) · 3 crossings · flows south-east
45 km² drain to this point - km 216–217 · 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)
And 11 more unnamed streams on our map
Where this road runs beside a river
- km 199–201 · 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 |
|---|---|---|
| Karandeniya | Watch | 32 |
| Elpitiya | Watch | 35 |
| Walallavita | Watch | 48 |
| Mathugama | Watch | 55 |
| Thumpane | Watch | 218 |
Rain on route
×Heavy rain, up to 126.4 mm in 24 h
Rain gauges near your route
123456789101112131415161718192021222324252627282930
0239 km
Key
DryLight rainModerate rainHeavy rainVery heavy rainNo rain report
- 1 Galle, 0.7 mm, dry
- 2 Wanduramba (NBRI), 0 mm, dry
- 3 Baddegama (NBRI), 43 mm, moderate rain
- 4 Baddegama, ≥ 44.6 mm, moderate rain or more (incomplete day)
- 5 Elpitiya (NBRI), 39 mm, moderate rain
- 6 Walallavita MV (NBRI), 64.2 mm, fairly heavy rain
- 7 Halwala (NBRI), 83.4 mm, fairly heavy rain
- 8 Matugama (NBRI), 126.4 mm, heavy rain
- 9 Putupaula, ≥ 1.5 mm, light rain or more (incomplete day)
- 10 Horana (NBRI), 0 mm, dry
- 11 Ratmalana, 14.6 mm, moderate rain
- 12 NBRI (NBRI), 0 mm, dry
- 13 Hanwella, 3 mm, light rain
- 16 Dunamale, 37.4 mm, moderate rain
- 18 Warakapola (NBRI), 38.6 mm, moderate rain
- 19 Giriulla, ≥ 39.7 mm, moderate rain or more (incomplete day)
- 20 Dambadeniya (NBRI), 7 mm, light rain
- 21 Maharachchimulla (NBRI), 5.6 mm, light rain
- 22 Polgahawela (NBRI), 4.4 mm, light rain
- 23 Kurunegala, 18.4 mm, moderate rain
- 24 Walpolakanda (NBRI), 7.6 mm, light rain
- 26 Galagedara (NBRI), 14 mm, moderate rain
- 27 Muruthalawa (NBRI), 13.2 mm, moderate rain
- 28 Katugastota (NBRI), 9.8 mm, light rain
- 29 Katugastota, 1.2 mm, light rain
- 30 Kandy NTS (NBRI), 10.6 mm, moderate 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 Welivitiya-Divithura, Karandeniya, Elpitiya, Benthota +15.
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 Mirigama, Alawwa, Narammala, Polgahawela +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 Attanagalla, Mirigama, Alawwa, Narammala +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 Galle, Kalutara, Colombo, Gampaha, Kurunegala and Kandy.
- 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, Gampaha, Kalutara and Galle 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.
- Covers Galle on this road: 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, Kalutara, Kurunegala and Galle 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)
- Galle: Showers or thundershowers after 1.00p.m. Max 31°C, min 24°C.
- 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 27 named rivers · 11 basins · Gin Ganga basin rain: Rare here (1–2 days a month) · rain upstream of Kalu Ganga: Rare here (1–2 days a month) · Minor flood level
Gin Ganga · P2 · Madampe Lake …
BaddegamaMinor flood level · River level 4.18 mDepartment’s thresholds: Alert 3.5, minor flood 4, major flood 5 m
River basins along this road
- km 0–3 · Gin Ganga basin
- km 3–5 · P2 basin
- km 5–34 · Gin Ganga basin
- km 34–36 · Madampe Lake basin
- km 36–65 · Bentota Ganga basin
- km 65–78 · Kalu Ganga basin
- km 78–105 · Bolgoda Ganga basin
- km 105–125 · Kelani Ganga basin
- km 125–161 · Attanagala Oya basin
- km 161–186 · Maha Oya basin
- km 186–203 · Deduru Oya basin
- km 203–208 · Maha Oya basin
- km 208–224 · Deduru Oya basin
- km 224–239 · Mahaweli Ganga basin
Satellite rain over these basins
- Gin Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Madampe Lake basin · Last 3 days: Rare here (1–2 days a month)
- Bentota 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)
- Kelani Ganga basin · Last 3 days: Rare here (1–2 days a month)
- Bolgoda Ganga basin · Last 3 days: Unusual here (3 days a month)
- Attanagala Oya basin · Last 3 days: Unusual here (3 days a month)
- Maha Oya basin · Last 3 days: Unusual here (3 days a month)
- 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 8 · Holuwagoda Ela (Gin Ganga basin)
2.8 km² drain to this point - km 20–22 · Gin Ganga · 2 crossings · flows west
681 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Baddegama, an Irrigation Department gauge 2.6 km downstream (709 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 44.6 mm in the 24 hours to 10 Nov, 08:30 (2 hourly readings missing); 0 mm in the 3 hours to 10 Nov, 09:05.
River level 4.18 m · Minor flood level · rising over about 3 hours (Department’s thresholds: Alert 3.5, minor flood 4, major flood 5 m) - km 45 · Uragas Ela (Bentota Ganga basin)
5.2 km² drain to this point - km 48 · Bentota_Gnga (Bentota Ganga basin)
363 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 56 · Welipenne Ganga (Bentota Ganga basin)
131 km² drain to this point - km 69 · Iriyangala Ela (Kalu Ganga basin)
9.7 km² drain to this point - km 77 · Kalu Ganga
2,762 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month) - km 78 · Keppu Ela (Bolgoda Ganga basin)
0.4 km² drain to this point - km 85 · Panape Ela (Bolgoda Ganga basin)
66 km² drain to this point - km 92 · Maha Oya (Bolgoda Ganga basin) · flows west
27 km² drain to this point - km 97 · Nudun Ela (Bolgoda Ganga basin) · flows west
35 km² drain to this point - km 110–111 · Maha Ela (Kelani Ganga basin) · 2 crossings
15 km² drain to this point - km 113–114 · Kelani Ganga · 3 crossings · flows south-west
2,059 km² drain to this point · rain over that area, Last 3 days: Rare here (1–2 days a month)
Hanwella, an Irrigation Department gauge 13.8 km upstream (1,820 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): 3 mm in the 24 hours to 10 Nov, 08:30 (Light); 0 mm in the 3 hours to 10 Nov, 09:04.
River level 6.05 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 6.5, minor flood 7.5, major flood 9.5 m) - km 127 · Uruwal Oya (Attanagala Oya basin)
5.7 km² drain to this point - km 130 · Uruwal Oya (Attanagala Oya basin) · flows west
42 km² drain to this point - km 135 · 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 143–146 · Diyaelle Oya (Attanagala Oya basin) · 2 crossings · flows south-west
0.2 km² drain to this point - km 152 · Diyaelle Oya (Attanagala Oya basin) · flows west
31 km² drain to this point - km 164 · 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 167–169 · 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 171 · Midella Ela (Maha Oya basin)
132 km² drain to this point - km 176–177 · Meda Ela (Maha Oya basin) · 2 crossings · flows north
58 km² drain to this point - km 183–184 · Gondara Ela (Maha Oya basin) · 2 crossings · flows south
4.2 km² drain to this point - km 189 · Rekawa Ela (Deduru Oya basin) · flows west
15 km² drain to this point - km 197 · Magur Oya (Deduru Oya basin) · flows north-west
1.3 km² drain to this point - km 199 · Getuwana Ela (Deduru Oya basin) · flows north
0.3 km² drain to this point - km 210 · Kaspatu Oya (Deduru Oya basin) · flows north-west
41 km² drain to this point - km 217–221 · Dik Oya (Deduru Oya basin) · 4 crossings · flows north-west
2.2 km² drain to this point - km 218 · Narankaha Ela (Deduru Oya basin) · flows south-west
16 km² drain to this point - km 234 · 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)
And 5 more unnamed streams on our map
Where this road runs beside a river
- km 168–169 · beside the Kuda Oya
- km 221–222 · 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.