Semoy river
Also known as: La Semoy
The Semoy (also known as La Semoy) is a European river flowing through France. As of 2026-10-15, the Semoy was flowing at about 0.436 m³/s at the La Semoy en Belgique [Chiny] gauge.
- Canonical name
- Semoy
- Local names / aliases
- La Semoy
- Countries
- France
- Maximum upstream drainage area
- 1,335 km²
- Mapped river length
- 111 km
- Gauging stations
- 7
- Latest measured discharge
- 0.436 m³/s (La Semoy en Belgique [Chiny], 2026-10-15)
Gauging stations on the Semoy
The following 7 gauging stations report discharge for the Semoy, 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 Semoy en Belgique [Chiny] | France | 0.436 | — | daily mean | Donnée brute | Hub'Eau Hydrométrie | 49.745, 5.351 | source | |
| Herbeumont | Belgium | 0.7 | Much below normal84% below the historic median | instantaneous | operational 10-minute value | Service public de Wallonie Hydrométrie | 49.769, 5.236 | source | |
| Auby-sur-Semois | Belgium | 0.05 | Much below normal88% below the historic median | instantaneous | operational 10-minute value | Service public de Wallonie Hydrométrie | 49.811, 5.167 | source | |
| La Semoy en Belgique [Bouillon] | France | 0.995 | — | daily mean | Donnée brute | Hub'Eau Hydrométrie | 49.792, 5.063 | source | |
| Vresse-sur-Semois | Belgium | 0.046 | Much below normal84% below the historic median | instantaneous | operational 10-minute value | Service public de Wallonie Hydrométrie | 49.873, 4.938 | source | |
| La Semoy en Belgique [Membre] | France | 1.214 | — | daily mean | Donnée brute | Hub'Eau Hydrométrie | 49.864, 4.902 | source | |
| La Semoy à Haulmé | France | 1.653 | Much below normal86% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 49.863, 4.786 | 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.