**Archived extract:** 2026-10-09 (UTC). Frozen data; observation dates are shown as captured. [View the current site](/)

# Allan river

Also known as: L'Allan

The Allan (also known as L'Allan) is a European river flowing through Switzerland. As of 2026-10-08, the Allan was flowing at about 1.345 m³/s at the L'Allan à Fesches-le-Châtel gauge.

**Canonical name:** Allan

**Local names / aliases:** L'Allan

**Countries:** Switzerland

**Maximum upstream drainage area:** 1,163 km²

**Mapped river length:** 18.2 km

**Gauging stations:** 4

**Latest measured discharge:** 1.345 m³/s (L'Allan à Fesches-le-Châtel, 2026-10-08)

## Gauging stations on the Allan

The following 4 gauging stations report discharge for the Allan, 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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| L'Allan à Fesches-le-Châtel | France | 1.345 | Much below normal — 70% below the historic median | 2026-10-08 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.523, 6.881 | [source](https://www.hydro.eaufrance.fr/stationhydro/U233401001/series) |
| La Savoureuse à Vieux-Charmont | France | 0.906 | Much below normal — 78% below the historic median | 2026-10-08 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.522, 6.844 | [source](https://www.hydro.eaufrance.fr/stationhydro/U234504001/series) |
| Le Rupt à Dung | France | 0.027 | Much below normal — 88% below the historic median | 2026-10-08 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.5, 6.753 | [source](https://www.hydro.eaufrance.fr/stationhydro/U235661001/series) |
| L'Allan à Courcelles-lès-Montbéliard | France | 2.985 | Much below normal — 73% below the historic median | 2026-10-08 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.5, 6.773 | [source](https://www.hydro.eaufrance.fr/stationhydro/U235401001/series) |

## Related rivers

-   [Rhône](/archive/2026-10-09/rivers/rhone.html)
-   [Ticino](/archive/2026-10-09/rivers/ticino.html)
-   [Dessoubre](/archive/2026-10-09/rivers/dessoubre.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 2026-10-09T12:15:16.537822+00:00. This page generated 2026-10-09T12:20:30.802Z. Discharge values carry their own observation dates in the table above.

[Explore the Allan on the interactive map →](/archive/2026-10-09/)