# Tagus river

Also known as: Tajo, Tejo

The Tagus (also known as Tajo, Tejo) is a European river flowing through Spain, Portugal. No public discharge gauge currently reports on the Tagus.

**Canonical name:** Tagus

**Local names / aliases:** Tajo, Tejo

**Countries:** Spain, Portugal

**Maximum upstream drainage area:** 69,312 km²

**Mapped river length:** 636.2 km

**Gauging stations:** 0

**Classification:** Major European river

## Gauging stations on the Tagus

No public discharge gauge is currently projected onto the Tagus in this dataset.

## Related rivers

-   [Douro](/rivers/douro.html)
-   [Ebro](/rivers/ebro.html)
-   [Guadiana](/rivers/guadiana.html)
-   [Guadalquivir](/rivers/guadalquivir.html)
-   [Segre](/rivers/segre.html)
-   [Júcar Bajo](/rivers/jucar-bajo.html)
-   [Minho](/rivers/minho.html)
-   [Esla](/rivers/esla.html)
-   [Pisuerga](/rivers/pisuerga.html)
-   [Júcar Medio](/rivers/jucar-medio.html)
-   [Cinca](/rivers/cinca.html)
-   [Jalón](/rivers/jalon.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 Tagus on the interactive map →](/)