# Alagnon river

Also known as: l'Alagnon

The Alagnon (also known as l'Alagnon) is a European river flowing through France. As of 2026-10-15, the Alagnon was flowing at about 0 m³/s at the L'Arcueil à Massiac \[Bousselorgues\] gauge.

**Canonical name:** Alagnon

**Local names / aliases:** l'Alagnon

**Countries:** France

**Maximum upstream drainage area:** 1,046 km²

**Mapped river length:** 30.3 km

**Gauging stations:** 5

**Latest measured discharge:** 0 m³/s (L'Arcueil à Massiac \[Bousselorgues\], 2026-10-15)

## Gauging stations on the Alagnon

The following 5 gauging stations report discharge for the Alagnon, 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'Arcueil à Massiac \[Bousselorgues\] | France | 0 | Much below normal — 100% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 45.241, 3.183 | [source](https://www.hydro.eaufrance.fr/stationhydro/K253401001/series) |
| L'Alagnon à Massiac - Pont RN 122 | France | 0.892 | — | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 45.251, 3.194 | [source](https://www.hydro.eaufrance.fr/stationhydro/K253401201/series) |
| La Sianne à Blesle \[La Bessière\] - La Bessière | France | 0.129 | — | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 45.313, 3.181 | [source](https://www.hydro.eaufrance.fr/stationhydro/K256000101/series) |
| L'Alagnon à Lempdes-sur-Allagnon \[Passerelle\] | France | 0.96 | — | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 45.387, 3.267 | [source](https://www.hydro.eaufrance.fr/stationhydro/K259301301/series) |
| \[Béal\] à Lempdes-sur-Allagnon \[Bief\] | France | 0.376 | — | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 45.387, 3.269 | [source](https://www.hydro.eaufrance.fr/stationhydro/K259301401/series) |

## Related rivers

-   [Loire](/rivers/loire.html)
-   [Seine](/rivers/seine.html)
-   [Garonne](/rivers/garonne.html)
-   [Saône](/rivers/saone.html)
-   [Dordogne](/rivers/dordogne.html)
-   [Maine](/rivers/maine.html)
-   [Vienne](/rivers/vienne.html)
-   [Tarn](/rivers/tarn.html)
-   [Allier](/rivers/allier.html)
-   [Durance](/rivers/durance.html)
-   [Oise](/rivers/oise.html)
-   [Cher](/rivers/cher.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 2026-10-16T13:31:53.036165+00:00. This page generated 2026-10-16T13:35:10.972Z. Discharge values carry their own observation dates in the table above.

[Explore the Alagnon on the interactive map →](/)