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Stream

Bou Regreg

240 km from source to mouth · Morocco.

MoroccoMoroccoFlows into Atlantic Ocean6th longest in Morocco

Follow the riverMonth by month

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

In numbers

Length

240km

Average flow

23m³/s

Basin

10,000km²

Drop

861m

from 861 m to 0 m

Country

1

The journey

From source to mouth

240 km of river and 9 stops on the way: 4 towns and cities on its banks, dams, bridges and the tributaries that feed it.

861 m0 m
Sourceat 861 m0 km
Kahf Nssar7,821 people27 km
Mohammed VI Bridge218 km
Atlantic Oceanat 0 m240 km
050100150200240 km
  1. 0 kmSourceat 861 m
  2. 27 kmKahf Nssar7,821 people
  3. 218 kmMohammed VI Bridge
  4. 228 kmSalé Al Jadida200,000 people
  5. 236 kmpipeline bridge over the Bou-Regreg in Rabat – Salé
  6. 238 kmHassan II Bridge
  7. 238 kmMoulay Hassan Bridge
  8. 238 kmTouarga4,293 people
  9. 239 kmKasbah of the Udayas
  10. 239 kmRabatUNESCO World Heritage
  11. 240 kmAtlantic Oceanat 0 m

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

Stream in Morocco

At the mouth it carries 23 m³/s on average: an Olympic pool every 109 seconds. It drops from 861 m to 0 m, 3.6 m per kilometre on average. Its basin covers 10,000 km², about the size of LB. 1.3 million people live in it. Highest water: from December to February; lowest: from July to October. It is heavily dammed: reservoirs can hold 67% of a year's flow.

Read more on Wikipedia

Where to start

  • RabatLargest city on its banks · 515,619 people
  • Rabat-Salé Airport (RBA)Nearest airport with scheduled flights, 9 km from the cityCar hire at RBA airport (Rabat)Discover Cars · Affiliate link
  • On the water8 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • From May to July and from September to OctoberThe best months to visit

Bou Regreg, month by month

Highest water: from December to February

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

81
10°65 mmJan
80
12°64 mmFeb
71
14°70 mmMar
60
16°54 mmApr
39
18°26 mmMay
18
22°7 mmJun
5.8
25°1 mmJul
3.0
26°2 mmAug
3.5
23°10 mmSep
15
20°45 mmOct
40
14°68 mmNov
72
12°84 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 3.0 m³/s in the lowest month to 81 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

Car hire at RBA airport (Rabat)Discover CarsSee 

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

Bou Regreg: the basin in numbers

9,845 km² of land send their water to this river. This is what lives on it.

DammedReservoirs can hold 67% of a year's flow: much of the river is a chain of lakes.
  • 1.3millionpeople live in the basin
  • 133/km²people per km²
  • 664maverage altitude of the basin
  • 556mmof rain a year (basin average)
  • 16.7°Caverage air temperature
  • 6%protected areas
  • 0.2%covered by lakes
  • 0.5km³held in reservoirs

What covers the basin

  • 2% Forest
  • 74% Cropland
  • 24% 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

Bou Regreg: what you find on the way

  • 1DamsBarrage Sidi Mohammed Ben Abdallah
  • 7Ferry piers
  • 1MarinasBouregreg Marina
  • 3River beachesPlage Bergama, Rabat Beach, Sale city Beach

From OpenStreetMap, within 1.8 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Bou Regreg 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.

  • 5beaches at the mouth and on the banksCoastya
  • 54mountains at the sourcePeakyas

Beaches (5)

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

  1. Plage de Temara16 km away22.9°C
  2. Shāţi’ ar Ribāţkm 23922.9°C
  3. Plage Rosa Marin23 km away22.9°C
  4. Plage des Nations16 km away22.9°C
  5. Plage Sidi Boughaba24 km away22.7°C

Open Coastya ↗

Mountains at the source (54)

Within 15 km of the source, by Peakyas

  1. Tekhkhitemt14 km away
  2. Tifechchakine15 km away
  3. Tabaïnout11 km away
  4. Jebel Taghat15 km away
  5. Talat Oum Gueddar10 km away
  6. Jebel Bou Hayati12 km away
  7. Zoumit4.4 km away
  8. Tatejart8.3 km away

46 more on PeakyasOpen Peakyas ↗

From space

The source and the mouth, seen from orbit

Bou Regreg: satellite view of the source
The source14 km across
Bou Regreg: satellite view of the mouth
The mouth14 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

Bou Regreg in pictures

Vallée du Bou Regreg P1060533
Pline · CC BY-SA 3.0
Boats in Bouregreg (1)
MarwanAndrew · CC BY-SA 4.0
Boats in Bouregreg (2)
MarwanAndrew · CC BY-SA 4.0
Bou Regreg River (Rabat) in 2026.01
CAPTAIN RAJU · CC0

Nearby

Rivers nearby

Sebou RiverMoroccoMorocco458 km140 m³/s31 km awayOum Er-Rbia RiverMoroccoMorocco556 km120 m³/s161 km awayLoukkos RiverMoroccoMorocco176 km50 m³/s145 km awayGuadalquivirSpainSpain657 km160 m³/s311 km awayGuadaleteSpainSpain159 km20 m³/s289 km awayGuadianaPortugalPortugal778 km70 m³/s354 km awayTensift RiverMoroccoMorocco270 km61 m³/s323 km awayTinto RiverSpainSpain100 km14 m³/s355 km away

Where these numbers come from

Name, length, placesWikidata (Q894940) · 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 atlasesCoastya, 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