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River

Sakarya River

824 km from source to mouth · Turkey.

TurkeyTurkeyFlows into Black Sea2nd longest in Turkey

Follow the riverMonth by month

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

In numbers

Length

824km

Average flow

240m³/s

Basin

65,000km²

Drop

997m

from 998 m to 1 m

Country

1

The journey

From source to mouth

824 km of river and 13 stops on the way: 6 towns and cities on its banks, dams, bridges and the tributaries that feed it.

998 m1 m
Çiftelerat 998 m0 km
Porsuk Rivertributary265 km
Ankara Rivertributary292 km
Sarıyar Reservoir45 km²396 km
Mihalgazi9,677 people515 km
Geyve20,199 people663 km
Adapazarı281,489 people708 km
Black Seaat 1 m824 km
0200400600824 km
  1. 0 kmÇiftelerat 998 m
  2. 45 kmÇifteler10,166 people
  3. 265 kmPorsuk Rivertributary
  4. 292 kmAnkara Rivertributary
  5. 341 kmKirmir Brooktributary
  6. 396 kmSarıyar Reservoir45 km²
  7. 515 kmMihalgazi9,677 people
  8. 615 kmOsmaneli15,708 people
  9. 663 kmGeyve20,199 people
  10. 696 kmSangarius Bridge
  11. 708 kmAdapazarı281,489 people
  12. 719 kmLake Poyrazlar0.6 km²
  13. 756 kmFerizli23,740 people
  14. 779 kmAkgöl3.0 km²
  15. 824 kmBlack Seaat 1 m

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

River in Turkey

At the mouth it carries 244 m³/s on average: an Olympic pool every 10 seconds. It drops from 998 m to 1 m, 1.2 m per kilometre on average. Its basin covers 65,000 km², about the size of LT. 7.2 million people live in it. Highest water: from January to February; lowest: from July to October. Dams and reservoirs hold back a large share of its water (49% of a year's flow).

Read more on Wikipedia

Where to start

Sakarya River, month by month

Highest water: from January to February

Lowest water: from July to October. Best months to visit: from June to October.

460
2°56 mmJan
450
4°46 mmFeb
370
7°47 mmMar
310
12°46 mmApr
270
16°50 mmMay
220
20°41 mmJun
150
22°24 mmJul
100
22°20 mmAug
89
19°26 mmSep
150
14°43 mmOct
240
9°46 mmNov
390
5°65 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 89 m³/s in the lowest month to 460 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

Sakarya River: the basin in numbers

62,798 km² of land send their water to this river. This is what lives on it.

Heavily regulatedReservoirs can hold 49% of a year's flow: dams shape its seasons.
  • 7.2millionpeople live in the basin
  • 114/km²people per km²
  • 975maverage altitude of the basin
  • 500mmof rain a year (basin average)
  • 10.7°Caverage air temperature
  • 0.3%covered by lakes
  • 3.7km³held in reservoirs

What covers the basin

  • 13% Forest
  • 35% Cropland
  • 16% 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

Sakarya River: what you find on the way

  • 15DamsGökpınar Barajı, Dümrek Dam, Gürsöğüt Dam and 12 more
  • 1Weirs

From OpenStreetMap, within 2.3 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Sakarya 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.

  • 3lakes on its wayLakeyas
  • 1beach at the mouth or on the banksCoastya
  • 4mountains at the sourcePeakyas

Lakes and reservoirs (3)

Lakes it flows through, by Lakeyas

  1. Sarıyar Reservoirkm 32845km²
  2. Lake Poyrazlarkm 5960.6km²
  3. Akgölkm 6463.0km²

Lakeyas is coming soonOpen Lakeyas ↗

Beaches (1)

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

  1. Karasu Plajı4.3 km away25.0°C

Open Coastya ↗

Mountains at the source (4)

Within 15 km of the source, by Peakyas

  1. Serçe Hill13 km away
  2. Kurtbaşı Hill14 km away
  3. Balağıl Hill1.4 km away
  4. Karaçal Hill4.9 km away

Open Peakyas ↗

From space

The source and the mouth, seen from orbit

Sakarya River: satellite view of the source
The source14 km across
Sakarya River: satellite view of the mouth
The mouth34 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

Sakarya River in pictures

Sakarya Nehri (20220703)
Kadı · CC BY-SA 4.0
SAKARYA NEHRİ GEÇİYOR ALT MİYOSEN OLİGOSEN OLUŞUM - panoramio
MERMERCİ ÖZGÜR1 · CC BY 3.0
SAKARYA NEHRİ GEÇİYOR YANI BAŞINDAN - panoramio
MERMERCİ ÖZGÜR1 · CC BY 3.0
Sakarya River
Nedim Ardoğa · CC BY-SA 3.0

Tributaries

Where it flows, and what flows into it

Tributaries (3)

Also: Porsuk River, Ankara River, Kirmir Brook

Where these numbers come from

Name, length, placesWikidata (Q217466) · 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, 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