# Boyne river

The Boyne is a European river flowing through Ireland. As of 2026-10-16, the Boyne was flowing at about 16.063 m³/s at the Slane Castle gauge.

**Canonical name:** Boyne

**Countries:** Ireland

**Maximum upstream drainage area:** 2,771 km²

**Mapped river length:** 77 km

**Gauging stations:** 3

**Latest measured discharge:** 16.063 m³/s (Slane Castle, 2026-10-16)

## Gauging stations on the Boyne

The following 3 gauging stations report discharge for the Boyne, 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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Slane Castle | Ireland | 16.063 | Normal — 46% below the historic median | 2026-10-16 | instantaneous | OPW quality code 254 | Office of Public Works Hydro-Data | 53.707, -6.562 | [source](https://waterlevel.ie/) |
| Trim | Ireland | 8.459 | Normal — 46% below the historic median | 2026-10-16 | instantaneous | OPW quality code 254 | Office of Public Works Hydro-Data | 53.556, -6.792 | [source](https://waterlevel.ie/) |
| Navan Weir | Ireland | 8.022 | Below normal — 62% below the historic median | 2026-10-16 | instantaneous | OPW quality code 254 | Office of Public Works Hydro-Data | 53.644, -6.672 | [source](https://waterlevel.ie/) |

## Related rivers

-   [Shannon](/rivers/shannon.html)
-   [Erne](/rivers/erne.html)
-   [Suir](/rivers/suir.html)
-   [Blackwater \[Munster\]](/rivers/blackwater-munster.html)
-   [Barrow](/rivers/barrow.html)
-   [Nore](/rivers/nore.html)
-   [Moy](/rivers/moy.html)
-   [Cong Canal](/rivers/cong-canal.html)
-   [Suck](/rivers/suck.html)
-   [Inny](/rivers/inny.html)
-   [Brosna](/rivers/brosna.html)
-   [Lee](/rivers/lee.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 Boyne on the interactive map →](/)