# Lys river

Also known as: La Lys

The Lys (also known as La Lys) is a European river flowing through Belgium. As of 2026-10-15, the Lys was flowing at about 6.008 m³/s at the La Lys à Bousbecque gauge.

**Canonical name:** Lys

**Local names / aliases:** La Lys

**Countries:** Belgium

**Maximum upstream drainage area:** 4,158 km²

**Mapped river length:** 85.8 km

**Gauging stations:** 2

**Latest measured discharge:** 6.008 m³/s (La Lys à Bousbecque, 2026-10-15)

## Gauging stations on the Lys

The following 2 gauging stations report discharge for the Lys, 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 Lys à Bousbecque | France | 6.008 | — | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 50.776, 3.074 | [source](https://www.hydro.eaufrance.fr/stationhydro/E381126501/series) |
| La Lys \[Lys\] en Belgique \[Menen - Menin\] - Ropswalle | France | 6.064 | Much below normal — 57% below the historic median | 2026-10-15 | daily mean | Donnée brute | Hub'Eau Hydrométrie | 50.786, 3.108 | [source](https://www.hydro.eaufrance.fr/stationhydro/E381126601/series) |

## Related rivers

-   [Berwijn](/rivers/berwijn.html)
-   [Scheldt](/rivers/scheldt.html)
-   [Ruisseau de Gelbressée](/rivers/ruisseau-de-gelbressee.html)
-   [Ruisseau des Fonds de Leffe](/rivers/ruisseau-des-fonds-de-leffe.html)
-   [Meuse](/rivers/meuse.html)
-   [Weesbeek](/rivers/weesbeek.html)
-   [Helpe Mineure](/rivers/helpe-mineure.html)
-   [Demer](/rivers/demer.html)
-   [Ruisseau de Lembrée](/rivers/ruisseau-de-lembree.html)
-   [Molenbeek](/rivers/molenbeek.html)
-   [Lhomme](/rivers/lhomme.html)
-   [Coeurcq](/rivers/coeurcq.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 Lys on the interactive map →](/)