River Flow Europe

Garonne river

Also known as: La Garonne, La Gimone, L'Aussonnelle

The Garonne (also known as La Garonne, La Gimone, L'Aussonnelle) is a European river flowing through France. As of 2026-10-09, the Garonne was flowing at about 189.4 m³/s at the La Garonne à Tonneins gauge.

Canonical name
Garonne
Local names / aliases
La Garonne, La Gimone, L'Aussonnelle
Countries
France
Maximum upstream drainage area
55,940 km²
Mapped river length
463.5 km
Gauging stations
18
Classification
Major European river
Latest measured discharge
189.4 m³/s (La Garonne à Tonneins, 2026-10-09)

Gauging stations on the Garonne

The following 18 gauging stations report discharge for the Garonne, ordered downstream (largest catchment first). Discharge is in cubic metres per second (m³/s).

StationCountryDischarge (m³/s)Historical ComparisonObservedMeasurementData qualityProviderLat, LonSource
La Garonne à TonneinsFrance189.4Normal13% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie44.389, 0.301source
La Garonne à MarmandeFrance221.1Normal5% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie44.5, 0.156source
La Garonne à la RéoleFrance181—daily meanDonnée bruteHub'Eau Hydrométrie44.579, -0.035source
La Garonne à LamagistèreFrance110.8Below normal30% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie44.121, 0.831source
La Gimone à Cordes-Tolosannes [Castelferrus]France0.419Much below normal50% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.998, 1.111source
La Garonne à Verdun-sur-Garonne - HGFrance51.041Much below normal30% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.854, 1.242source
L'Aussonnelle à SeilhFrance0.121Much below normal54% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.692, 1.356source
La Garonne à Portet-sur-GaronneFrance56.082Normal25% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.526, 1.415source
La Garonne à MarquefaveFrance39.787Normal2% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.317, 1.245source
Le Louge à MuretFrance1.302Much below normal68% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.46, 1.317source
La Garonne à Palaminy [Cazères]France51.571Normal4% above the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.202, 1.071source
La Garonne [partielle] à Saint-Gaudens [Valentine]France21.546Below normal26% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.098, 0.706source
Le canal de Saint-Martory à ManciouxFrance3.56—daily meanDonnée bruteHub'Eau Hydrométrie43.152, 0.951source
La Garonne à ManciouxFrance20.268Normal6% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie43.158, 0.958source
Le Maudan à Melles - [Fos]France0.37Normal22% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie42.867, 0.748source
La Garonne à Saint-Béat - HEFrance7.477Much below normal35% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie42.915, 0.692source
La Garonne à Saint-Béat - Aval-HGFrance5.575—daily meanDonnée bruteHub'Eau Hydrométrie42.916, 0.69source
La Garonne à ChaumFrance12.439Much below normal35% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie42.939, 0.648source

Data, sources & timestamps

Geometry is the HydroRIVERS network (HydroSHEDS): European reaches with at least 500 km² of upstream catchment, merged into chains between confluences. Flow direction comes from the network itself; river names are the canonical English label joined from provider metadata and Natural Earth, with local-language aliases retained.

Discharge is normalised observed streamflow from official national hydrology providers, measured where a gauge sits on the river and interpolated between gauges. Pale/estimated values are derived from drainage area × the local specific discharge of nearby gauges and are never presented as measurements.

Underlying dataset built . This page generated . Discharge values carry their own observation dates in the table above.

Explore the Garonne on the interactive map →