River
Baïse
188 km from source to mouth · France.
FranceFlows into Garonne
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.
- 0 kmPlateau de Lannemezanat 489 m
- 5 kmCapvern1,298 people
- 7 kmBurg271 people
- 7 kmBégole189 people
- 7 kmCastelbajac132 people
- 7 kmLagrange261 people
- 7 kmLutilhous210 people
- 7 kmHoueydets287 people
- 26 kmSaint-Gaudens12,193 people
- 51 kmCazères3,769 people
- 61 kmCarbonne4,215 people
- 74 kmEaunes3,831 people
- 76 kmMuret24,313 people
- 78 kmSeysses6,466 people
- 79 kmFrouzins6,418 people
- 80 kmVilleneuve-Tolosane9,258 people
- 80 kmRoquettes3,714 people
- 80 kmRoques5,436 people
- 83 kmPortet-sur-Garonne9,794 people
- 86 kmRamonville-Saint-Agne12,573 people
- 90 kmToulouse511,684 people
- 93 kmBlagnac24,263 people
- 95 kmAucamville6,202 people
- 96 kmSaint-Alban5,379 people
- 96 kmFenouillet4,504 people
- 96 kmBeauzelle6,043 people
- 101 kmSaint-Jory4,564 people
- 103 kmMerville3,152 people
- 105 kmCastelnau-d'Estrétefonds3,155 people
- 107 kmGrenade6,486 people
- 110 kmGrisolles3,119 people
- 115 kmVerdun-sur-Garonne3,269 people
- 123 kmMontech3,743 people
- 133 kmCastelsarrasin13,260 people
- 147 kmValence5,039 people
- 161 kmBon-Encontre6,076 people
- 162 kmLayrac3,400 people
- 164 kmBoé4,746 people
- 167 kmAgen34,367 people
- 168 kmLe Passage9,434 people
- 183 kmFeugarolles1,015 people
- 183 kmVieux pont sur la Baïse (Nérac)
- 183 kmNérac6,992 people
- 183 kmLavardac2,307 people
- 183 kmVianne979 people
- 183 kmGélisetributary
- 184 kmPont-canal sur la Baïse
- 184 kmThouars-sur-Garonne228 people
- 185 kmBuzet-sur-Baïse1,245 people
- 187 kmSaint-Léger177 people
- 187 kmAiguillon4,576 people
- 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).
Where to start
- ToulouseLargest city on its banks · 511,684 people
- Toulouse-Blagnac Airport (TLS)Nearest airport with scheduled flights, 7 km from the cityCar hire at TLS airport (Toulouse/Blagnac)Discover Cars · Affiliate link↗
- On the water38 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- From May to SeptemberThe best months to visit
Baïse, month by month
Highest water: from December to February
Best months to visit: from May to September.
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.
- 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
- 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
- 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
- Pic d'Aste14 km away1,127m
- Montagne d'Arielle13 km away
- Montagne de Serre-Sèque13 km away
- Mont Castéra15 km away
From space
The source and the mouth, seen from orbit


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




Tributaries
Where it flows, and what flows into it
It flows into
GaronneTributaries (5)
Also: Petite Baïse, Gélise, Auloue, Baïsole, Gèle
Where these numbers come from
| Name, length, places | Wikidata (Q542024) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Our other atlases | 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.