# Ognon river

Also known as: L'Ognon

The Ognon (also known as L'Ognon) is a European river flowing through France. As of 2026-10-15, the Ognon was flowing at about 0.654 m³/s at the L'Ognon à Chassey-lès-Montbozon \[Bonnal\] gauge.

**Canonical name:** Ognon

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

**Countries:** France

**Maximum upstream drainage area:** 2,180 km²

**Mapped river length:** 116.3 km

**Gauging stations:** 4

**Latest measured discharge:** 0.654 m³/s (L'Ognon à Chassey-lès-Montbozon \[Bonnal\], 2026-10-15)

## Gauging stations on the Ognon

The following 4 gauging stations report discharge for the Ognon, 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'Ognon à Chassey-lès-Montbozon \[Bonnal\] | France | 0.654 | Much below normal — 92% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.508, 6.354 | [source](https://www.hydro.eaufrance.fr/stationhydro/U104401001/series) |
| L'Ognon à Beaumotte-Aubertans | France | 2.049 | Much below normal — 81% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.416, 6.181 | [source](https://www.hydro.eaufrance.fr/stationhydro/U105401001/series) |
| L'Ognon à Pin | France | 2.279 | Much below normal — 86% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.317, 5.866 | [source](https://www.hydro.eaufrance.fr/stationhydro/U107402001/series) |
| L'Ognon à Pesmes | France | 1.515 | Much below normal — 91% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 47.293, 5.545 | [source](https://www.hydro.eaufrance.fr/stationhydro/U108401001/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 Ognon on the interactive map →](/)