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

# Ipoly river

The Ipoly is a European river flowing through Hungary. As of 2026-10-08, the Ipoly was flowing at about 0.424 m³/s at the Ipolytölgyes gauge.

**Canonical name:** Ipoly

**Countries:** Hungary

**Maximum upstream drainage area:** 5,148 km²

**Mapped river length:** 139.8 km

**Gauging stations:** 4

**Latest measured discharge:** 0.424 m³/s (Ipolytölgyes, 2026-10-08)

## Gauging stations on the Ipoly

The following 4 gauging stations report discharge for the Ipoly, 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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Ipolytölgyes | Hungary | 0.424 | Much below normal — 92% below the historic median | 2026-10-08 | instantaneous | operational open-data observation | Hungarian General Directorate of Water Management | 47.925, 18.765 | [source](https://data.vizugy.hu/) |
| Ipolytarnóc | Hungary | 0.336 | Much below normal — 79% below the historic median | 2026-10-08 | instantaneous | operational open-data observation | Hungarian General Directorate of Water Management | 48.236, 19.606 | [source](https://data.vizugy.hu/) |
| Nógrádszakál | Hungary | 0.37 | Much below normal — 86% below the historic median | 2026-10-08 | instantaneous | operational open-data observation | Hungarian General Directorate of Water Management | 48.191, 19.53 | [source](https://data.vizugy.hu/) |
| Balassagyarmat | Hungary | 0.81 | Much below normal — 72% below the historic median | 2026-10-08 | instantaneous | operational open-data observation | Hungarian General Directorate of Water Management | 48.076, 19.28 | [source](https://data.vizugy.hu/) |

## Related rivers

-   [Tisza](/archive/2026-10-08/rivers/tisza.html)
-   [Mureș](/archive/2026-10-08/rivers/mures.html)
-   [Jászsági-főcsatorna](/archive/2026-10-08/rivers/jaszsagi-focsatorna.html)
-   [Maros](/archive/2026-10-08/rivers/maros.html)
-   [Nagykunsági-főcsatorna](/archive/2026-10-08/rivers/nagykunsagi-focsatorna.html)
-   [Hármas-Körös](/archive/2026-10-08/rivers/harmas-koros.html)
-   [Szamos](/archive/2026-10-08/rivers/szamos.html)
-   [Sio](/archive/2026-10-08/rivers/sio.html)
-   [Sajó](/archive/2026-10-08/rivers/sajo.html)
-   [Sebes-Körös](/archive/2026-10-08/rivers/sebes-koros.html)
-   [Rába](/archive/2026-10-08/rivers/raba-740.html)
-   [Kettős-Körös](/archive/2026-10-08/rivers/kettos-koros.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 Ipoly on the interactive map →](/archive/2026-10-08/)