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

# Arc river

Also known as: L'Arc

The Arc (also known as L'Arc) is a European river flowing through France. As of 2026-10-14, the Arc was flowing at about 1.086 m³/s at the L'Arc à Aix-en-Provence \[Roquefavour-Bruet\] gauge.

**Canonical name:** Arc

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

**Countries:** France

**Maximum upstream drainage area:** 979 km²

**Mapped river length:** 35.4 km

**Gauging stations:** 2

**Latest measured discharge:** 1.086 m³/s (L'Arc à Aix-en-Provence \[Roquefavour-Bruet\], 2026-10-14)

## Gauging stations on the Arc

The following 2 gauging stations report discharge for the Arc, 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'Arc à Aix-en-Provence \[Roquefavour-Bruet\] | France | 1.086 | Much below normal — 40% below the historic median | 2026-10-14 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.516, 5.314 | [source](https://www.hydro.eaufrance.fr/stationhydro/Y412204001/series) |
| L'Arc à Berre-l'Étang - Saint-Estève | France | 1.692 | Normal — 14% below the historic median | 2026-10-14 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 43.5, 5.152 | [source](https://www.hydro.eaufrance.fr/stationhydro/Y412202002/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 Arc on the interactive map →](/archive/2026-10-15/)