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River

Tana River

800 km from source to mouth · Kenya.

KenyaKenyaFlows into Indian Ocean1st longest in Kenya

Follow the riverMonth by month

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

In numbers

Length

800km

Average flow

240m³/s

Basin

95,000km²

Drop

1,481m

from 1,481 m to 0 m

Country

1

The journey

From source to mouth

800 km of river and 11 stops on the way: 3 towns and cities on its banks, dams, bridges and the tributaries that feed it.

1,481 m0 m
Aberdare Rangeat 1,481 m0 km
Thika Rivertributary75 km
Kiambere Hydroelectric Power Station157 km
Grand Falls198 km
Garissa163,399 people441 km
Hola20,912 people586 km
Lake Shaka Babo0.6 km²720 km
Indian Oceanat 0 m800 km
0200400600800 km
  1. 0 kmAberdare Rangeat 1,481 m
  2. 25 kmSagana13,000 people
  3. 75 kmThika Rivertributary
  4. 84 kmMasinga Dam
  5. 100 kmKamburu Hydroelectric Power Station
  6. 110 kmGitaru Hydroelectric Power Station
  7. 120 kmKindaruma Power Station
  8. 157 kmKiambere Hydroelectric Power Station
  9. 198 kmGrand Falls
  10. 441 kmGarissa163,399 people
  11. 586 kmHola20,912 people
  12. 720 kmLake Shaka Babo0.6 km²
  13. 800 kmIndian Oceanat 0 m

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

River of Kenya

At the mouth it carries 242 m³/s on average: an Olympic pool every 10 seconds. It drops from 1,481 m to 0 m, 1.9 m per kilometre on average. Its basin covers 95,000 km², about the size of HU. 6.0 million people live in it. Highest water: May and from November to December; lowest: March and from August to October. Dams and reservoirs hold back a large share of its water (32% of a year's flow).

Read more on Wikipedia

Where to start

  • GarissaLargest city on its banks · 163,399 people
  • Manda Airport (LAU)Nearest airport with scheduled flights, 245 km from the cityCar hire at NBO airport (Nairobi)Discover Cars · Affiliate link
  • On the water2 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • From June to SeptemberThe best months to visit

Tana River, month by month

Highest water: May and from November to December

Lowest water: March and from August to October. Best months to visit: from June to September.

360
26°18 mmJan
140
27°13 mmFeb
140
28°51 mmMar
390
27°124 mmApr
430
26°66 mmMay
350
25°25 mmJun
160
24°16 mmJul
89
24°12 mmAug
88
25°21 mmSep
130
27°45 mmOct
410
27°131 mmNov
440
26°66 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 88 m³/s in the lowest month to 440 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

Tana River: the basin in numbers

95,243 km² of land send their water to this river. This is what lives on it.

Heavily regulatedReservoirs can hold 32% of a year's flow: dams shape its seasons.
  • 6.0millionpeople live in the basin
  • 63/km²people per km²
  • 585maverage altitude of the basin
  • 713mmof rain a year (basin average)
  • 24.5°Caverage air temperature
  • 22%protected areas
  • 0.1%covered by lakes
  • 2.4km³held in reservoirs

What covers the basin

  • 14% Forest
  • 8% Cropland
  • 34% Pasture
  • 4% 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

Tana River: what you find on the way

  • 8DamsMasinga Dam, Kamburu Dam, Gitaru dam and 5 more
  • 3Weirs
  • 3WaterfallsMission Falls, Adamsons Falls
  • 2Ferry piers

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

Cross-checked with our atlases

Tana 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.

  • 1waterfall on the riverCascadyas
  • 1lake on its wayLakeyas
  • 3mountains at the sourcePeakyas

Waterfalls (1)

On the river, by Cascadyas

  1. Grand Fallskm 205

Cascadyas is coming soonOpen Cascadyas ↗

Lakes and reservoirs (1)

Lakes it flows through, by Lakeyas

  1. Lake Shaka Babokm 7440.6km²

Lakeyas is coming soonOpen Lakeyas ↗

Mountains at the source (3)

Within 15 km of the source, by Peakyas

  1. Karĩma13 km away
  2. Tũmũ Tũmũ3.0 km away
  3. Kiamucheru12 km away

Open Peakyas ↗

From space

The source and the mouth, seen from orbit

Tana River: satellite view of the source
The source14 km across
Tana River: satellite view of the mouth
The mouth42 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

Tana River in pictures

DM-SD-01-06042
SGT R.A. WARD · Public domain
Tana river at Bodnjeguoika in Utsjoki, Lapland, Finland, 2022 August
Ximonic (Simo Räsänen) · CC BY-SA 4.0
Tana River Sunset- Kenya
Tish Madesh · CC0
Tana River County, Kenya - panoramio (2)
Adam H T Geelle · CC BY 3.0

Tributaries

Where it flows, and what flows into it

Tributaries (1)

Also: Thika River

Where these numbers come from

Name, length, placesWikidata (Q331162) · 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
Our other atlasesCascadyas, Lakeyas, Peakyas — 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