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River

Sankosh River

320 km from source to mouth · India and Bhutan.

IndiaBhutanIndia and BhutanFlows into Brahmaputra River

Follow the riverMonth by month

SourceMouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

320km

Average flow

5,400m³/s

Basin

9,900km²

Drop

4,344m

from 4,369 m to 25 m

Countries

2

The journey

From source to mouth

320 km of river and 4 stops on the way: 4 towns and cities on its banks, dams, bridges and the tributaries that feed it.

4,369 m25 m
Sourceat 4,369 m0 km
Punākha21,500 people88 km
Wangdue Phodrang8,954 people101 km
Brahmaputra Riverat 25 m320 km
0100200320 km
  1. 0 kmSourceat 4,369 m
  2. 88 kmPunākha21,500 people
  3. 95 kmPajo3,032 people
  4. 101 kmWangdue Phodrang8,954 people
  5. 301 kmGolakganj8,244 people
  6. 320 kmBrahmaputra Riverat 25 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River

At the mouth it carries 5,380 m³/s on average: 2.2 Olympic pools every second. It drops from 4,369 m to 25 m, 14 m per kilometre on average. Its basin covers 9,900 km², about the size of LB. 765,000 people live in it. Highest water: from July to August; lowest: from December to March. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

Sankosh River, month by month

Highest water: from July to August

Lowest water: from December to March. Best months to visit: from February to March and from November to December.

22
12°12 mmJan
22
14°15 mmFeb
34
17°58 mmMar
69
20°132 mmApr
190
22°363 mmMay
420
23°652 mmJun
610
24°689 mmJul
630
24°496 mmAug
510
23°371 mmSep
300
20°132 mmOct
150
16°16 mmNov
47
13°6 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 22 m³/s in the lowest month to 630 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.

Plan the trip

Plan the trip: boat trips, a bed by the river, a car

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

The basin

Sankosh River: the basin in numbers

11,161 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 0.0% of a year's flow: the river still keeps its natural rhythm.
  • 765,000people live in the basin
  • 69/km²people per km²
  • 2,777maverage altitude of the basin
  • 1,652mmof rain a year (basin average)
  • 10.2°Caverage air temperature
  • 52%protected areas
  • 0.1%covered by lakes
  • 4%glaciers
  • 6%permafrost

What covers the basin

  • 47% Forest
  • 10% Cropland
  • 14% Pasture
  • 1% Towns and cities
  • 4% Ice

RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.

Along the river

Sankosh River: what you find on the way

  • 3Dams

From OpenStreetMap, within 1.8 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Sankosh River in our other atlases

What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.

  • 0lakes on its wayLakeyas

Lakes and reservoirs (0)

Lakes it flows through, by Lakeyas

    Lakeyas is coming soonOpen Lakeyas ↗

    From space

    The source and the mouth, seen from orbit

    Sankosh River: satellite view of the source
    The source14 km across
    Sankosh River: satellite view of the mouth
    The mouth14 km across

    Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.

    Photos

    Sankosh River in pictures

    Mo Chhu
    Taxidesign · CC BY 2.0
    Puna Tsang Chu River, Bhutan
    Bernard Gagnon · CC BY-SA 4.0
    Punakha Dzong 2019-08-25 a
    Christopher J. Fynn · CC BY-SA 4.0
    Punakha suspension bridge1
    Kheng Singye Dorji (KSD) · CC BY-SA 4.0

    Where these numbers come from

    Name, length, placesWikidata (Q629894) · CC0
    Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata
    FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
    Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
    Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
    Along the river© OpenStreetMap contributors · ODbL
    ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
    Our other atlasesLakeyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST

    Every source and licence is on the data sources page.

    The family

    Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?

    Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

    beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
    lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
    mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
    waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
    islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
    riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
    canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit