**Archived extract:** 2026-10-15 (UTC). Frozen data; observation dates are shown as captured. [View the current site](/)

# Alagnon river

Also known as: l'Alagnon

The Alagnon (also known as l'Alagnon) is a European river flowing through France. As of 2026-10-14, 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 \[Bousselorgues\], 2026-10-14)

## 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 | 2026-10-14 | 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 | 0.922 | — | 2026-10-14 | 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 | 0.132 | — | 2026-10-14 | 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 | 0.988 | — | 2026-10-14 | 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 | 0.375 | — | 2026-10-14 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 45.387, 3.269 | [source](https://www.hydro.eaufrance.fr/stationhydro/K259301401/series) |

## Related rivers

-   [Loire](/archive/2026-10-15/rivers/loire.html)
-   [Seine](/archive/2026-10-15/rivers/seine.html)
-   [Garonne](/archive/2026-10-15/rivers/garonne.html)
-   [Saône](/archive/2026-10-15/rivers/saone.html)
-   [Dordogne](/archive/2026-10-15/rivers/dordogne.html)
-   [Maine](/archive/2026-10-15/rivers/maine.html)
-   [Vienne](/archive/2026-10-15/rivers/vienne.html)
-   [Tarn](/archive/2026-10-15/rivers/tarn.html)
-   [Allier](/archive/2026-10-15/rivers/allier.html)
-   [Durance](/archive/2026-10-15/rivers/durance.html)
-   [Oise](/archive/2026-10-15/rivers/oise.html)
-   [Cher](/archive/2026-10-15/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 2026-10-15T13:24:48.145498+00:00. This page generated 2026-10-15T13:28:34.225Z. Discharge values carry their own observation dates in the table above.

[Explore the Alagnon on the interactive map →](/archive/2026-10-15/)