**Archived extract:** 2026-10-08 (UTC). Frozen data; observation dates are shown as captured. [View the current site](/)

# Mersey river

Also known as: River Mersey

The Mersey (also known as River Mersey) is a European river flowing through United Kingdom. As of 2026-10-08, the Mersey was flowing at about 16 m³/s at the Westy gauge.

**Canonical name:** Mersey

**Local names / aliases:** River Mersey

**Countries:** United Kingdom

**Maximum upstream drainage area:** 2,380 km²

**Mapped river length:** 54 km

**Gauging stations:** 2

**Latest measured discharge:** 16 m³/s (Westy, 2026-10-08)

## Gauging stations on the Mersey

The following 2 gauging stations report discharge for the Mersey, 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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Westy | United Kingdom | 16 | — | 2026-10-08 | instantaneous | raw real-time | Environment Agency | 53.391, -2.56 | [source](http://environment.data.gov.uk/flood-monitoring/id/stations/693976) |
| Ashton Weir | United Kingdom | 5.15 | — | 2026-10-08 | instantaneous | raw real-time | Environment Agency | 53.438, -2.344 | [source](http://environment.data.gov.uk/flood-monitoring/id/stations/692726) |

## Related rivers

-   [Thames](/archive/2026-10-08/rivers/thames.html)
-   [Trent](/archive/2026-10-08/rivers/trent.html)
-   [Severn](/archive/2026-10-08/rivers/severn.html)
-   [Avon](/archive/2026-10-08/rivers/avon.html)
-   [Derwent](/archive/2026-10-08/rivers/derwent.html)
-   [Don](/archive/2026-10-08/rivers/don.html)
-   [Ness](/archive/2026-10-08/rivers/ness.html)
-   [Lee](/archive/2026-10-08/rivers/lee-435.html)
-   [Soar](/archive/2026-10-08/rivers/soar.html)
-   [Cod Beck](/archive/2026-10-08/rivers/cod-beck.html)
-   [Caledonian Canal](/archive/2026-10-08/rivers/caledonian-canal.html)
-   [Derwent](/archive/2026-10-08/rivers/derwent-186.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 2026-10-08T11:59:44.803026+00:00. This page generated 2026-10-08T12:10:09.696Z. Discharge values carry their own observation dates in the table above.

[Explore the Mersey on the interactive map →](/archive/2026-10-08/)