Grand Hers river
Also known as: Le Grand Hers
The Grand Hers (also known as Le Grand Hers) is a European river flowing through France. As of 2026-10-09, the Grand Hers was flowing at about 2.886 m³/s at the Le Grand Hers à Roumengoux gauge.
- Canonical name
- Grand Hers
- Local names / aliases
- Le Grand Hers
- Countries
- France
- Maximum upstream drainage area
- 1,390 km²
- Mapped river length
- 58.5 km
- Gauging stations
- 5
- Latest measured discharge
- 2.886 m³/s (Le Grand Hers à Roumengoux, 2026-10-09)
Gauging stations on the Grand Hers
The following 5 gauging stations report discharge for the Grand Hers, 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 Grand Hers à Roumengoux | France | 2.886 | Below normal18% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.083, 1.934 | source | |
| Le Grand Hers à Mirepoix | France | 1.266 | — | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.093, 1.876 | source | |
| La Vixiège à Belpech | France | 0.014 | Much below normal78% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.202, 1.75 | source | |
| Le Grand Hers à Mazères | France | 5.401 | Normal11% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.254, 1.681 | source | |
| Le Grand Hers à Calmont | France | 2.248 | Much below normal50% below the historic median | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.292, 1.595 | 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.