Allan river
Also known as: L'Allan
The Allan (also known as L'Allan) is a European river flowing through Switzerland. As of 2026-10-15, the Allan was flowing at about 1.242 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
- 1.242 m³/s (L'Allan à Fesches-le-Châtel, 2026-10-15)
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 | 1.242 | Much below normal72% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.523, 6.881 | source | |
| La Savoureuse à Vieux-Charmont | France | 0.126 | Much below normal97% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.522, 6.844 | source | |
| Le Rupt à Dung | France | 0.02 | Much below normal91% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.5, 6.753 | source | |
| L'Allan à Courcelles-lès-Montbéliard | France | 2.216 | Much below normal80% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.5, 6.773 | source |
Related rivers
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.