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River

Awash River

1,200 km from source to mouth · Ethiopia.

EthiopiaEthiopiaFlows into Lake Abbe1st longest in Ethiopia

Follow the riverMonth by month

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

In numbers

Length

1,200km

Average flow

270m³/s

Basin

64,000km²

Drop

1,909m

from 2,149 m to 240 m

Country

1

The journey

From source to mouth

1,200 km of river and 28 stops on the way: 8 towns and cities on its banks, dams, bridges and the tributaries that feed it.

2,149 m240 m
Sourceat 2,149 m0 km
Lake York3.6 km²179 km
Wonji29,200 people230 km
Lake Basaka38 km²368 km
Debhilē Bahir0.7 km²463 km
Caddabasa92 km²659 km
Lower Valley of the AwashUNESCO World Heritage800 km
Mille Rivertributary897 km
Dubti36,100 people954 km
Lake Gummare53 km²1,062 km
Lake Abbeat 240 m1,200 km
02505007501,0001,200 km
  1. 0 kmSourceat 2,149 m
  2. 1 kmGīnch’ī37,600 people
  3. 122 kmAkaki Rivertributary
  4. 163 kmDēra30,700 people
  5. 179 kmLake York3.6 km²
  6. 183 kmLake Gladys2.8 km²
  7. 189 kmSomba Hāyk'2.1 km²
  8. 195 kmModjo Rivertributary
  9. 215 kmKoka Reservoir150 km²
  10. 230 kmWonji29,200 people
  11. 368 kmLake Basaka38 km²
  12. 414 kmĀwash36,500 people
  13. 414 kmAwash36,500 people
  14. 450 kmGermama Rivertributary
  15. 456 kmKabenna Rivertributary
  16. 463 kmDebhilē Bahir0.7 km²
  17. 659 kmCaddabasa92 km²
  18. 723 kmBorkana Rivertributary
  19. 800 kmLower Valley of the AwashUNESCO World Heritage
  20. 897 kmMille Rivertributary
  21. 931 kmLogīya34,500 people
  22. 940 kmLogiya Rivertributary
  23. 954 kmDubti36,100 people
  24. 1,019 kmAsaita39,400 people
  25. 1,062 kmLake Gummare53 km²
  26. 1,069 kmLake Afambo35 km²
  27. 1,072 kmSuwata Hāyk'2.4 km²
  28. 1,086 kmLake Bario22 km²
  29. 1,144 kmLake Abbe312 km²
  30. 1,200 kmLake Abbeat 240 m

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

Major river in Ethiopia

At the mouth it carries 266 m³/s on average: an Olympic pool every 9.4 seconds. It drops from 2,149 m to 240 m, 1.6 m per kilometre on average. Its basin covers 64,000 km², about the size of LV. 11.5 million people live in it. Highest water: from August to September; lowest: from November to February. It is heavily dammed: reservoirs can hold 51% of a year's flow.

Read more on Wikipedia

Where to start

  • AsaitaLargest city on its banks · 39,400 people
  • Djibouti-Ambouli Airport (JIB)Nearest airport with scheduled flights, 188 km from the city
  • From October to FebruaryThe best months to visit

Awash River, month by month

Highest water: from August to September

Lowest water: from November to February. Best months to visit: from October to February.

68
22°13 mmJan
110
23°29 mmFeb
170
25°40 mmMar
220
26°44 mmApr
210
27°35 mmMay
200
28°36 mmJun
430
27°103 mmJul
770
26°128 mmAug
730
26°54 mmSep
450
25°15 mmOct
140
23°9 mmNov
67
22°5 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 67 m³/s in the lowest month to 770 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

Awash River: the basin in numbers

90,994 km² of land send their water to this river. This is what lives on it.

DammedReservoirs can hold 51% of a year's flow: much of the river is a chain of lakes.
  • 11.5millionpeople live in the basin
  • 127/km²people per km²
  • 1,244maverage altitude of the basin
  • 652mmof rain a year (basin average)
  • 23.1°Caverage air temperature
  • 30%protected areas
  • 0.7%covered by lakes
  • 4.3km³held in reservoirs

What covers the basin

  • 19% Cropland
  • 23% 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

Awash River: what you find on the way

  • 14DamsKoka, Tendaho Irrigation Dam and 12 more
  • 3Weirs
  • 3WaterfallsAwash waterfalls

From OpenStreetMap, within 2.4 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Awash 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.

  • 12lakes on its wayLakeyas

Lakes and reservoirs (12)

Lakes it flows through, by Lakeyas

  1. Lake Yorkkm 1483.6km²
  2. Koka Reservoirkm 178150km²
  3. Lake Basakakm 30438km²
  4. Caddabasakm 54692km²
  5. Lake Gummarekm 87953km²
  6. Lake Afambokm 88535km²
  7. Lake Bariokm 90022km²
  8. Lake Abbekm 948 · 37 m deep312km²

4 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗

From space

The source and the mouth, seen from orbit

Awash River: satellite view of the source
The source14 km across
Awash River: satellite view of the mouth
The mouth41 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

Awash River in pictures

Awash River Valley, Asaita, Afar, Ethiopia
Cook.bri · CC BY-SA 3.0
Awash near Asaita
Albert Backer · CC BY-SA 4.0
Parc national d'Awash-Ethiopie-Rivière (1)
Ji-Elle · CC BY-SA 3.0
The Awash River
mjr74 · CC BY-SA 3.0

Tributaries

Where it flows, and what flows into it

Tributaries (11)

Also: Germama River, Akaki River, Dechatu River, Mille River, Borkana River, Kabenna River, Ataye River, Logiya River, Modjo River, Hawadi River, Keleta River

Where these numbers come from

Name, length, placesWikidata (Q782845) · 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