# 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 2026-10-15, the Garonne was flowing at about 100.8 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:** 100.8 m³/s (La Garonne à Tonneins, 2026-10-15)

## 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).

| Station | Country | Discharge (m³/s) | Historical Comparison | Observed | Measurement | Data quality | Provider | Lat, Lon | Source |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| La Garonne à Tonneins | France | 100.8 | Much below normal — 54% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 44.389, 0.301 | [source](https://www.hydro.eaufrance.fr/stationhydro/O900001002/series) |
| La Garonne à Marmande | France | 133.4 | Much below normal — 42% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 44.5, 0.156 | [source](https://www.hydro.eaufrance.fr/stationhydro/O909001001/series) |
| La Garonne à la Réole | France | 125.8 | — | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 44.579, -0.035 | [source](https://www.hydro.eaufrance.fr/stationhydro/O919001001/series) |
| La Garonne à Lamagistère | France | 82.756 | Much below normal — 47% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 44.121, 0.831 | [source](https://www.hydro.eaufrance.fr/stationhydro/O614001001/series) |
| La Gimone à Cordes-Tolosannes \[Castelferrus\] | France | 0.709 | Below normal — 15% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.998, 1.111 | [source](https://www.hydro.eaufrance.fr/stationhydro/O288000101/series) |
| La Garonne à Verdun-sur-Garonne - HG | France | 33.322 | Much below normal — 54% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.854, 1.242 | [source](https://www.hydro.eaufrance.fr/stationhydro/O262002002/series) |
| L'Aussonnelle à Seilh | France | 0.042 | Much below normal — 84% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.692, 1.356 | [source](https://www.hydro.eaufrance.fr/stationhydro/O203401001/series) |
| La Garonne à Portet-sur-Garonne | France | 33.239 | Much below normal — 56% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.526, 1.415 | [source](https://www.hydro.eaufrance.fr/stationhydro/O200001001/series) |
| La Garonne à Marquefave | France | 19.443 | Much below normal — 52% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.317, 1.245 | [source](https://www.hydro.eaufrance.fr/stationhydro/O080001001/series) |
| Le Louge à Muret | France | 1.136 | Much below normal — 72% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.46, 1.317 | [source](https://www.hydro.eaufrance.fr/stationhydro/O098401001/series) |
| La Garonne à Palaminy \[Cazères\] | France | 37.55 | Much below normal — 24% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.202, 1.071 | [source](https://www.hydro.eaufrance.fr/stationhydro/O060003001/series) |
| La Garonne \[partielle\] à Saint-Gaudens \[Valentine\] | France | 15.555 | Much below normal — 47% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.098, 0.706 | [source](https://www.hydro.eaufrance.fr/stationhydro/O020002001/series) |
| Le canal de Saint-Martory à Mancioux | France | 3.556 | — | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.152, 0.951 | [source](https://www.hydro.eaufrance.fr/stationhydro/O029021002/series) |
| La Garonne à Mancioux | France | 11.675 | Much below normal — 46% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.158, 0.958 | [source](https://www.hydro.eaufrance.fr/stationhydro/O029003001/series) |
| Le Maudan à Melles - \[Fos\] | France | 0.149 | Much below normal — 68% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 42.867, 0.748 | [source](https://www.hydro.eaufrance.fr/stationhydro/O001531001/series) |
| La Garonne à Saint-Béat - HE | France | 5.567 | Much below normal — 51% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 42.915, 0.692 | [source](https://www.hydro.eaufrance.fr/stationhydro/O001004003/series) |
| La Garonne à Saint-Béat - Aval-HG | France | 4.117 | — | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 42.916, 0.69 | [source](https://www.hydro.eaufrance.fr/stationhydro/O001004004/series) |
| La Garonne à Chaum | France | 11.687 | Much below normal — 39% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 42.939, 0.648 | [source](https://www.hydro.eaufrance.fr/stationhydro/O005002001/series) |

## Related rivers

-   [Loire](/rivers/loire.html)
-   [Seine](/rivers/seine.html)
-   [Saône](/rivers/saone.html)
-   [Dordogne](/rivers/dordogne.html)
-   [Maine](/rivers/maine.html)
-   [Vienne](/rivers/vienne.html)
-   [Tarn](/rivers/tarn.html)
-   [Allier](/rivers/allier.html)
-   [Durance](/rivers/durance.html)
-   [Oise](/rivers/oise.html)
-   [Cher](/rivers/cher.html)
-   [Marne](/rivers/marne.html)

## 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 2026-10-16T13:31:53.036165+00:00. This page generated 2026-10-16T13:35:10.972Z. Discharge values carry their own observation dates in the table above.

[Explore the Garonne on the interactive map →](/)