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River

Atrato River

644 km from source to mouth · Colombia.

ColombiaColombiaFlows into Gulf of Urabá5th longest in Colombia

Follow the riverMonth by month

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

In numbers

Length

644km

Average flow

4,900m³/s

Basin

38,500km²

Drop

464m

from 464 m to 0 m

Country

1

The journey

From source to mouth

644 km of river and 19 stops on the way: 4 towns and cities on its banks, dams, bridges and the tributaries that feed it.

464 m0 m
Sourceat 464 m0 km
Quibdó130,825 people64 km
Ciénaga Aguaclara2.1 km²150 km
Ciénaga Achuarra2.2 km²160 km
Ciénaga Napipí2.6 km²313 km
Ciénaga Muriel2.1 km²340 km
Ciénagas El Burro2.1 km²403 km
Ciénaga Las Mujeres9.5 km²432 km
Ciénaga La Mazamorra0.5 km²491 km
Gulf of Urabáat 0 m644 km
0200400644 km
  1. 0 kmSourceat 464 m
  2. 64 kmQuibdó130,825 people
  3. 116 kmMedio Atrato33,542 people
  4. 150 kmCiénaga Aguaclara2.1 km²
  5. 160 kmCiénaga Achuarra2.2 km²
  6. 272 kmMurrí Rivertributary
  7. 282 kmVigía del Fuerte5,624 people
  8. 285 kmBojayá Rivertributary
  9. 313 kmCiénaga Napipí2.6 km²
  10. 340 kmCiénaga Muriel2.1 km²
  11. 387 kmCiénagas de Montaña15 km²
  12. 403 kmCiénagas El Burro2.1 km²
  13. 404 kmCiénaga San Alejandro1.4 km²
  14. 432 kmCiénaga Las Mujeres9.5 km²
  15. 457 kmCiénaga de Pedeguita0.5 km²
  16. 465 kmCiénaga de Pedega6.4 km²
  17. 474 kmCiénaga Carvajal1.3 km²
  18. 491 kmCiénaga La Mazamorra0.5 km²
  19. 493 kmRiosucio48,257 people
  20. 506 kmCiénaga El Encanto0.3 km²
  21. 644 kmGulf of Urabáat 0 m

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

River in Colombia

At the mouth it carries 4,900 m³/s on average: 2.0 Olympic pools every second. It drops from 464 m to 0 m, 0.7 m per kilometre on average. Its basin covers 38,500 km², about the size of GW. 446,000 people live in it. Highest water: from July to October. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

Atrato River, month by month

Highest water: from July to October

Best months to visit: from September to January.

3,200
27°214 mmJan
2,500
27°199 mmFeb
2,200
28°212 mmMar
2,900
28°418 mmApr
3,600
27°438 mmMay
4,200
27°438 mmJun
4,400
27°486 mmJul
4,500
27°478 mmAug
4,300
27°390 mmSep
4,200
27°431 mmOct
4,000
27°413 mmNov
3,900
27°365 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 2,200 m³/s in the lowest month to 4,500 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

Atrato River: the basin in numbers

35,996 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.
  • 446,000people live in the basin
  • 12/km²people per km²
  • 488maverage altitude of the basin
  • 4,509mmof rain a year (basin average)
  • 24.8°Caverage air temperature
  • 17%protected areas
  • 0.6%covered by lakes

What covers the basin

  • 61% Forest
  • 1% Cropland
  • 14% Pasture

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

Cross-checked with our atlases

Atrato 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.

  • 13lakes on its wayLakeyas
  • 1beach at the mouth or on the banksCoastya

Lakes and reservoirs (13)

Lakes it flows through, by Lakeyas

  1. Ciénaga Achuarrakm 1152.2km²
  2. Ciénaga Napipíkm 2252.6km²
  3. Ciénaga Murielkm 2452.1km²
  4. Ciénagas de Montañakm 27915km²
  5. Ciénagas El Burrokm 2902.1km²
  6. Ciénaga San Alejandrokm 2911.4km²
  7. Ciénaga Las Mujereskm 3119.5km²
  8. Ciénaga de Pedegakm 3346.4km²

5 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗

Beaches (1)

At the mouth (25 km) and on the banks, by Coastya

  1. Playa Tarena16 km away29.3°C

Open Coastya ↗

From space

The source and the mouth, seen from orbit

Atrato River: satellite view of the source
The source14 km across
Atrato River: satellite view of the mouth
The mouth26 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

Atrato River in pictures

RioAtrato al atardecer
Alex guillermo duarte rojas · CC BY-SA 4.0
Atrato river Medio Atrato region
Luukslegers · CC BY-SA 4.0
Atardecer rio atrato
Ambarpatt · CC BY-SA 3.0
BETE donde creci, ahora Municio del medio Atrato Rio 01
CHOColombia · CC BY-SA 3.0

Tributaries

Where it flows, and what flows into it

Tributaries (2)

Also: Murrí River, Bojayá River

Where these numbers come from

Name, length, placesWikidata (Q1363972) · 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, Coastya — 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