River
Lô River
470 km from source to mouth · Vietnam and China.
Vietnam and ChinaFlows into Red River6th longest in Vietnam
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.
- 0 kmSourceat 1,206 m
- 123 kmLũng Cú4,885 people
- 200 kmPác Miầu4,793 people
- 287 kmThị Trấn Na Hang10,921 people
- 353 kmGâm Rivertributary
- 366 kmTuyên Quang104,645 people
- 402 kmChay Rivertributary
- 453 kmViệt Trì415,280 people
- 463 kmPhó Đáy Rivertributary
- 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).
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.
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
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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.
- 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
- 4Waterfalls
- 2Rapids
- 17Ferry piersBến thủy lòng hồ thủy điện Tuyên Quang, Bến phà Then and 15 more
- 1Marinas
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


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


Tributaries
Where it flows, and what flows into it
It flows into
Red RiverTributaries (3)
Also: Gâm River, Chay River, Phó Đáy River
In the same basin
Where these numbers come from
| Name, length, places | Wikidata (Q2227484) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
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.