River Flow Europe

Couesnon river

Also known as: le Couesnon

The Couesnon (also known as le Couesnon) is a European river flowing through France. As of 2026-10-09, the Couesnon was flowing at about 0.53 m³/s at the Le Couesnon à Romazy - La Mondrais gauge.

Canonical name
Couesnon
Local names / aliases
le Couesnon
Countries
France
Maximum upstream drainage area
1,112 km²
Mapped river length
35 km
Gauging stations
1
Latest measured discharge
0.53 m³/s (Le Couesnon à Romazy - La Mondrais, 2026-10-09)

Gauging stations on the Couesnon

The following gauging station reports discharge for the Couesnon. Discharge is in cubic metres per second (m³/s).

StationCountryDischarge (m³/s)Historical ComparisonObservedMeasurementData qualityProviderLat, LonSource
Le Couesnon à Romazy - La MondraisFrance0.53Much below normal61% below the historic mediandaily meanDonnée bruteHub'Eau Hydrométrie48.365, -1.504source

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 Couesnon on the interactive map →