River Flow Europe

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).

StationCountryDischarge (m³/s)Historical ComparisonObservedMeasurementData qualityProviderLat, LonSource
La Lys à BousbecqueFrance6.008—daily meanDonnée bruteHub'Eau Hydrométrie50.776, 3.074source
La Lys [Lys] en Belgique [Menen - Menin] - RopswalleFrance6.064Much below normal57% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie50.786, 3.108source

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 . This page generated . Discharge values carry their own observation dates in the table above.

Explore the Lys on the interactive map →