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River

Lô River

470 km from source to mouth · Vietnam and China.

VietnamChinaVietnam and ChinaFlows into Red River6th longest in Vietnam

Follow the riverMonth by month

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

In numbers

Length

470km

Average flow

1,100m³/s

Basin

39,000km²

Drop

1,196m

from 1,206 m to 10 m

Countries

2

The journey

From source to mouth

470 km of river and 8 stops on the way: 5 towns and cities on its banks, dams, bridges and the tributaries that feed it.

1,206 m10 m
Sourceat 1,206 m0 km
Lũng Cú4,885 people123 km
Pác Miầu4,793 people200 km
Thị Trấn Na Hang10,921 people287 km
Gâm Rivertributary353 km
Tuyên Quang104,645 people366 km
Red Riverat 10 m470 km
0100200300400470 km
  1. 0 kmSourceat 1,206 m
  2. 123 kmLũng Cú4,885 people
  3. 200 kmPác Miầu4,793 people
  4. 287 kmThị Trấn Na Hang10,921 people
  5. 353 kmGâm Rivertributary
  6. 366 kmTuyên Quang104,645 people
  7. 402 kmChay Rivertributary
  8. 453 kmViệt Trì415,280 people
  9. 463 kmPhó Đáy Rivertributary
  10. 470 kmRed Riverat 10 m

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

Tributary of Red River in Vietnam

At the mouth it carries 1,055 m³/s on average: an Olympic pool every 2.4 seconds. It drops from 1,206 m to 10 m, 2.5 m per kilometre on average. Its basin covers 39,000 km², about the size of CH. 4.1 million people live in it. Highest water: August; lowest: from December to March. Its dams hold back little of its water (8.8% of a year's flow).

Read more on Wikipedia

Where to start

  • Việt TrìLargest city on its banks · 415,280 people
  • Noi Bai International Airport (HAN)Nearest airport with scheduled flights, 44 km from the city
  • On the water19 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • Kayak and canoe2 put-ins and rapids mapped (OpenStreetMap)
  • From November to MarchThe best months to visit

Lô River, month by month

Highest water: August

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

170
13°14 mmJan
170
15°32 mmFeb
190
18°33 mmMar
340
22°81 mmApr
860
25°198 mmMay
1,500
27°258 mmJun
2,200
27°314 mmJul
2,600
27°312 mmAug
2,300
25°192 mmSep
1,500
22°92 mmOct
750
19°44 mmNov
320
16°20 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 170 m³/s in the lowest month to 2,600 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

Lô River: the basin in numbers

34,809 km² of land send their water to this river. This is what lives on it.

Lightly regulatedReservoirs can hold 8.8% of a year's flow.
  • 4.1millionpeople live in the basin
  • 119/km²people per km²
  • 866maverage altitude of the basin
  • 1,547mmof rain a year (basin average)
  • 19.6°Caverage air temperature
  • 4%protected areas
  • 0.6%covered by lakes
  • 2.9km³held in reservoirs

What covers the basin

  • 5% Forest
  • 15% Cropland
  • 9% Pasture
  • 3% Towns and cities

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

Lô River: what you find on the way

  • 17DamsĐập thủy điện Nho Quế 1, Đập thủy điện Nho Quế 2, Đập thủy điện Nho Quế 3 and 14 more
  • 4Waterfalls
  • 2Rapids
  • 17Ferry piersBến thủy lòng hồ thủy điện Tuyên Quang, Bến phà Then and 15 more
  • 1Marinas
  • 1Boat rentalsTravel boat tour boat stop

From OpenStreetMap, within 2.1 km of the river. Not mapped is not the same as not there.

From space

The source and the mouth, seen from orbit

Lô River: satellite view of the source
The source14 km across
Lô River: satellite view of the mouth
The mouth25 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

Lô River in pictures

Song Lo
vi:user:Viethavvh · Public domain
Song Lo @Nam TpHaGiang'2005
BacLuong at Vietnamese Wikipedia · Public domain

Tributaries

Where it flows, and what flows into it

Tributaries (3)

Also: Gâm River, Chay River, Phó Đáy River

Where these numbers come from

Name, length, placesWikidata (Q2227484) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point 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

Every source and licence is on the data sources page.

The family

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