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River

Baïse

188 km from source to mouth · France.

FranceFranceFlows into Garonne

Follow the riverMonth by month

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

In numbers

Length

188km

Average flow

5.0m³/s

Basin

2,910km²

Drop

459m

from 489 m to 30 m

Country

1

The journey

From source to mouth

188 km of river and 50 stops on the way: 47 towns and cities on its banks, dams, bridges and the tributaries that feed it.

489 m30 m
Plateau de Lannemezanat 489 m0 km
Saint-Gaudens12,193 people26 km
Cazères3,769 people51 km
Carbonne4,215 people61 km
Muret24,313 people76 km
Toulouse511,684 people90 km
Grenade6,486 people107 km
Montech3,743 people123 km
Castelsarrasin13,260 people133 km
Valence5,039 people147 km
Agen34,367 people167 km
Garonneat 30 m188 km
050100150188 km
  1. 0 kmPlateau de Lannemezanat 489 m
  2. 5 kmCapvern1,298 people
  3. 7 kmBurg271 people
  4. 7 kmBégole189 people
  5. 7 kmCastelbajac132 people
  6. 7 kmLagrange261 people
  7. 7 kmLutilhous210 people
  8. 7 kmHoueydets287 people
  9. 26 kmSaint-Gaudens12,193 people
  10. 51 kmCazères3,769 people
  11. 61 kmCarbonne4,215 people
  12. 74 kmEaunes3,831 people
  13. 76 kmMuret24,313 people
  14. 78 kmSeysses6,466 people
  15. 79 kmFrouzins6,418 people
  16. 80 kmVilleneuve-Tolosane9,258 people
  17. 80 kmRoquettes3,714 people
  18. 80 kmRoques5,436 people
  19. 83 kmPortet-sur-Garonne9,794 people
  20. 86 kmRamonville-Saint-Agne12,573 people
  21. 90 kmToulouse511,684 people
  22. 93 kmBlagnac24,263 people
  23. 95 kmAucamville6,202 people
  24. 96 kmSaint-Alban5,379 people
  25. 96 kmFenouillet4,504 people
  26. 96 kmBeauzelle6,043 people
  27. 101 kmSaint-Jory4,564 people
  28. 103 kmMerville3,152 people
  29. 105 kmCastelnau-d'Estrétefonds3,155 people
  30. 107 kmGrenade6,486 people
  31. 110 kmGrisolles3,119 people
  32. 115 kmVerdun-sur-Garonne3,269 people
  33. 123 kmMontech3,743 people
  34. 133 kmCastelsarrasin13,260 people
  35. 147 kmValence5,039 people
  36. 161 kmBon-Encontre6,076 people
  37. 162 kmLayrac3,400 people
  38. 164 kmBoé4,746 people
  39. 167 kmAgen34,367 people
  40. 168 kmLe Passage9,434 people
  41. 183 kmFeugarolles1,015 people
  42. 183 kmVieux pont sur la Baïse (Nérac)
  43. 183 kmNérac6,992 people
  44. 183 kmLavardac2,307 people
  45. 183 kmVianne979 people
  46. 183 kmGélisetributary
  47. 184 kmPont-canal sur la Baïse
  48. 184 kmThouars-sur-Garonne228 people
  49. 185 kmBuzet-sur-Baïse1,245 people
  50. 187 kmSaint-Léger177 people
  51. 187 kmAiguillon4,576 people
  52. 188 kmGaronneat 30 m

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

River in France

At the mouth it carries 5.0 m³/s on average: an Olympic pool every 500 seconds. It drops from 489 m to 30 m, 2.4 m per kilometre on average. Its basin covers 2,910 km², about the size of LU. 2.6 million people live in it. Highest water: from December to February. Its dams hold back little of its water (4.6% of a year's flow).

Read more on Wikipedia

Where to start

Baïse, month by month

Highest water: from December to February

Best months to visit: from May to September.

610
5°58 mmJan
570
6°56 mmFeb
440
9°56 mmMar
410
12°65 mmApr
420
15°76 mmMay
380
18°69 mmJun
210
20°47 mmJul
120
20°59 mmAug
150
18°62 mmSep
260
13°58 mmOct
400
9°62 mmNov
570
5°70 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 120 m³/s in the lowest month to 610 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

Baïse: the basin in numbers

37,901 km² of land send their water to this river. This is what lives on it.

Lightly regulatedReservoirs can hold 4.6% of a year's flow.
  • 2.6millionpeople live in the basin
  • 68/km²people per km²
  • 503maverage altitude of the basin
  • 819mmof rain a year (basin average)
  • 11.2°Caverage air temperature
  • 25%protected areas
  • 0.2%covered by lakes
  • 0.6km³held in reservoirs

What covers the basin

  • 30% Forest
  • 45% Cropland
  • 14% 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

Baïse: what you find on the way

  • 35DamsBarrage de Rodère, Barrage de la Mar Rouge, Barrage le Manciès and 32 more
  • 79WeirsLa Cavaletade, Seuil du Ramier, Chaussée du Bazacle and 76 more
  • 92LocksÉcluse Saint-Michel, Canal du Midi, Écluse Saint-Pierre and 89 more
  • 3Waterfalls
  • 21Boat ramps
  • 2Ferry piers
  • 13MarinasPort Saint-Sauveur, Port Jacques-Yves Cousteau, Halte nautique de Castelsarrasin and 10 more
  • 2Boat rentalsLocaboat holidays, Aquitaine Navigation
  • 3River beachesLe 15, Garonne Plage, Le Ponton

From OpenStreetMap, within 2.1 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Baïse 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.

  • 4mountains at the sourcePeakyas

Mountains at the source (4)

Within 15 km of the source, by Peakyas

  1. Pic d'Aste14 km away1,127m
  2. Montagne d'Arielle13 km away
  3. Montagne de Serre-Sèque13 km away
  4. Mont Castéra15 km away

Open Peakyas ↗

From space

The source and the mouth, seen from orbit

Baïse: satellite view of the source
The source14 km across
Baïse: satellite view of the mouth
The mouth27 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

Baïse in pictures

Baise kanalbruecke
Wolfgang Bauer · Public domain
Barrage sur la Baïse à Barcugnan et Montaut (2019)
F123 · CC BY-SA 4.0
La Baïse au pont-canal
Thérèse Gaigé · CC BY-SA 4.0
Baisera
The original uploader was Lembeye at Occitan Wikipedia . · CC BY-SA 3.0

Tributaries

Where it flows, and what flows into it

Tributaries (5)

Also: Petite Baïse, Gélise, Auloue, Baïsole, Gèle

Where these numbers come from

Name, length, placesWikidata (Q542024) · 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 atlasesPeakyas — 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