Viaur river
Also known as: Le Viaur
The Viaur (also known as Le Viaur) is a European river flowing through France. As of 2026-10-07, the Viaur was flowing at about 0.121 m³/s at the Le Céor à Saint-Just-sur-Viaur - Castelpers gauge.
- Canonical name
- Viaur
- Local names / aliases
- Le Viaur
- Countries
- France
- Maximum upstream drainage area
- 1,541 km²
- Mapped river length
- 72.9 km
- Gauging stations
- 4
- Latest measured discharge
- 0.121 m³/s (Le Céor à Saint-Just-sur-Viaur - Castelpers, 2026-10-07)
Gauging stations on the Viaur
The following 4 gauging stations report discharge for the Viaur, 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 |
|---|---|---|---|---|---|---|---|---|---|
| Le Céor à Saint-Just-sur-Viaur - Castelpers | France | 0.121 | — | daily mean | Donnée brute | Hub'Eau Hydrométrie | 44.129, 2.392 | source | |
| Le Viaur à Saint-Just-sur-Viaur [Le Cambon] | France | 1.086 | Below normal35% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 44.124, 2.365 | source | |
| Le Viaur à Saint-Just-sur-Viaur [Roc Miquel] - EDF | France | 1.011 | Much below normal47% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 44.127, 2.358 | source | |
| Le Viaur à Saint-Martin-Laguépie [2] | France | 1.045 | Much below normal60% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 44.143, 1.969 | 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.