**Archived extract:** 2026-10-08 (UTC). Frozen data; observation dates are shown as captured. [View the current site](/)

# Armancon river

Also known as: L'Armancon

The Armancon (also known as L'Armancon) is a European river flowing through France. As of 2026-10-07, the Armancon was flowing at about 0.176 m³/s at the La Brenne à Montbard gauge.

**Canonical name:** Armancon

**Local names / aliases:** L'Armancon

**Countries:** France

**Maximum upstream drainage area:** 2,182 km²

**Mapped river length:** 103.3 km

**Gauging stations:** 4

**Latest measured discharge:** 0.176 m³/s (La Brenne à Montbard, 2026-10-07)

## Gauging stations on the Armancon

The following 4 gauging stations report discharge for the Armancon, 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 Brenne à Montbard | France | 0.176 | Much below normal — 94% below the historic median | 2026-10-07 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.623, 4.324 | [source](https://www.hydro.eaufrance.fr/stationhydro/H244234001/series) |
| L'Armançon à Aisy-sur-Armançon - aval | France | 0.53 | Much below normal — 88% below the historic median | 2026-10-07 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.668, 4.233 | [source](https://www.hydro.eaufrance.fr/stationhydro/H245202001/series) |
| \[La fosse Dionne\] à Tonnerre | France | 0.017 | Much below normal — 89% below the historic median | 2026-10-07 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.857, 3.971 | [source](https://www.hydro.eaufrance.fr/stationhydro/H246371001/series) |
| L'Armançon à Tronchoy | France | 1.441 | Much below normal — 77% below the historic median | 2026-10-07 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.914, 3.939 | [source](https://www.hydro.eaufrance.fr/stationhydro/H246202001/series) |

## Related rivers

-   [Loire](/archive/2026-10-08/rivers/loire.html)
-   [Seine](/archive/2026-10-08/rivers/seine.html)
-   [Garonne](/archive/2026-10-08/rivers/garonne.html)
-   [Saône](/archive/2026-10-08/rivers/saone.html)
-   [Dordogne](/archive/2026-10-08/rivers/dordogne.html)
-   [Maine](/archive/2026-10-08/rivers/maine.html)
-   [Vienne](/archive/2026-10-08/rivers/vienne.html)
-   [Doubs](/archive/2026-10-08/rivers/doubs.html)
-   [Tarn](/archive/2026-10-08/rivers/tarn.html)
-   [Allier](/archive/2026-10-08/rivers/allier.html)
-   [Durance](/archive/2026-10-08/rivers/durance.html)
-   [Oise](/archive/2026-10-08/rivers/oise.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 2026-10-08T11:59:44.803026+00:00. This page generated 2026-10-08T12:10:09.696Z. Discharge values carry their own observation dates in the table above.

[Explore the Armancon on the interactive map →](/archive/2026-10-08/)