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River

Little Zab

456 km from source to mouth · Iraq and Iran.

IraqIranIraq and IranFlows into Tigris4th longest in Iraq

Follow the riverMonth by month

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

In numbers

Length

456km

Average flow

220m³/s

Basin

19,400km²

Drop

1,216m

from 1,338 m to 122 m

Countries

2

The journey

From source to mouth

456 km of river and 5 stops on the way: 2 towns and cities on its banks, dams, bridges and the tributaries that feed it.

1,338 m122 m
Zagros Mountainsat 1,338 m0 km
Mīrābād6,000 people43 km
Sardasht Dam97 km
Lake Dukan120 km²225 km
Dibs2.6 km²358 km
Tigrisat 122 m456 km
0100200300400456 km
  1. 0 kmZagros Mountainsat 1,338 m
  2. 43 kmMīrābād6,000 people
  3. 97 kmSardasht Dam
  4. 225 kmLake Dukan120 km²
  5. 358 kmDibs2.6 km²
  6. 449 kmAlZwya15,000 people
  7. 456 kmTigrisat 122 m

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

River in Iran and Iraq

At the mouth it carries 219 m³/s on average: an Olympic pool every 11 seconds. It drops from 1,338 m to 122 m, 2.7 m per kilometre on average. Its basin covers 19,400 km², about the size of SI. 1.5 million people live in it. Highest water: from February to March; lowest: from July to October. It is heavily dammed: reservoirs can hold 155% of a year's flow.

Read more on Wikipedia

Where to start

  • AlZwyaLargest city on its banks · 15,000 people
  • Kirkuk International Airport (KIK)Nearest airport with scheduled flights, 88 km from the city
  • From April to May and from October to NovemberThe best months to visit

Little Zab, month by month

Highest water: from February to March

Lowest water: from July to October. Best months to visit: from April to May and from October to November.

340
5°103 mmJan
440
7°113 mmFeb
440
11°101 mmMar
340
16°71 mmApr
190
22°31 mmMay
76
28°1 mmJun
21
32°0 mmJul
11
32°0 mmAug
11
27°0 mmSep
14
21°12 mmOct
81
14°56 mmNov
200
8°81 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 11 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

Little Zab: the basin in numbers

20,022 km² of land send their water to this river. This is what lives on it.

DammedReservoirs can hold 155% of a year's flow: much of the river is a chain of lakes.
  • 1.5millionpeople live in the basin
  • 77/km²people per km²
  • 994maverage altitude of the basin
  • 631mmof rain a year (basin average)
  • 16.3°Caverage air temperature
  • 0.6%covered by lakes
  • 6.8km³held in reservoirs

What covers the basin

  • 1% Forest
  • 35% Cropland
  • 17% Pasture
  • 2% 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

Little Zab: what you find on the way

  • 10DamsKani Sib Dam, Sardasht Dam, DAM and 7 more
  • 1Waterfalls
  • 1River beaches

From OpenStreetMap, within 2.0 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Little Zab 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.

  • 2lakes on its wayLakeyas
  • 38mountains at the sourcePeakyas

Lakes and reservoirs (2)

Lakes it flows through, by Lakeyas

  1. Lake Dukankm 226120km²
  2. Dibskm 3602.6km²

Lakeyas is coming soonOpen Lakeyas ↗

Mountains at the source (38)

Within 15 km of the source, by Peakyas

  1. Kūh-e Sheykhān12 km away
  2. Kūh-e Kāseh Bardīān14 km away
  3. Kūh-e Zendeh Bīd12 km away
  4. Kūh-e Sarjāl-e Āb7.7 km away
  5. Kūh-e Āqā Sar12 km away
  6. Kūh-e Khvājeh Ḩājjīān11 km away
  7. Kūh-e Shargah9.4 km away
  8. Kūh-e Mālberān11 km away

30 more on PeakyasOpen Peakyas ↗

From space

The source and the mouth, seen from orbit

Little Zab: satellite view of the source
The source14 km across
Little Zab: satellite view of the mouth
The mouth19 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.

Where these numbers come from

Name, length, placesWikidata (Q954645) · 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, 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