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

# Blackwater \[Munster\] river

The Blackwater \[Munster\] is a European river flowing through Ireland. As of 2026-10-08, the Blackwater \[Munster\] was flowing at about 7.316 m³/s at the Mallow Railway Br gauge.

**Canonical name:** Blackwater \[Munster\]

**Countries:** Ireland

**Maximum upstream drainage area:** 3,229 km²

**Mapped river length:** 106.5 km

**Gauging stations:** 4

**Latest measured discharge:** 7.316 m³/s (Mallow Railway Br, 2026-10-08)

## Gauging stations on the Blackwater \[Munster\]

The following 4 gauging stations report discharge for the Blackwater \[Munster\], 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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Mallow Railway Br | Ireland | 7.316 | Much below normal — 78% below the historic median | 2026-10-08 | instantaneous | OPW quality code 254 | Office of Public Works Hydro-Data | 52.131, -8.657 | [source](https://waterlevel.ie/) |
| Killavullen | Ireland | 8.402 | Much below normal — 75% below the historic median | 2026-10-08 | instantaneous | OPW quality code 254 | Office of Public Works Hydro-Data | 52.149, -8.515 | [source](https://waterlevel.ie/) |
| Fermoy Br D/S | Ireland | 9.159 | Much below normal — 76% below the historic median | 2026-10-08 | instantaneous | OPW quality code 254 | Office of Public Works Hydro-Data | 52.14, -8.275 | [source](https://waterlevel.ie/) |
| Ballyduff | Ireland | 14.956 | Much below normal — 72% below the historic median | 2026-10-08 | instantaneous | OPW quality code 254 | Office of Public Works Hydro-Data | 52.144, -8.052 | [source](https://waterlevel.ie/) |

## Related rivers

-   [Shannon](/archive/2026-10-08/rivers/shannon.html)
-   [Erne](/archive/2026-10-08/rivers/erne.html)
-   [Suir](/archive/2026-10-08/rivers/suir.html)
-   [Barrow](/archive/2026-10-08/rivers/barrow.html)
-   [Boyne](/archive/2026-10-08/rivers/boyne.html)
-   [Nore](/archive/2026-10-08/rivers/nore.html)
-   [Moy](/archive/2026-10-08/rivers/moy.html)
-   [Cong Canal](/archive/2026-10-08/rivers/cong-canal.html)
-   [Suck](/archive/2026-10-08/rivers/suck.html)
-   [Inny](/archive/2026-10-08/rivers/inny.html)
-   [Brosna](/archive/2026-10-08/rivers/brosna.html)
-   [Lee](/archive/2026-10-08/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 2026-10-08T11:59:44.803026+00:00. This page generated 2026-10-08T12:10:09.696Z. Discharge values carry their own observation dates in the table above.

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