# Supraśl river

The Supraśl is a European river flowing through Poland. As of 2026-10-16, the Supraśl was flowing at about 1.02 m³/s at the Nowosiółki gauge.

**Canonical name:** Supraśl

**Countries:** Poland

**Maximum upstream drainage area:** 1,831 km²

**Mapped river length:** 48 km

**Gauging stations:** 3

**Latest measured discharge:** 1.02 m³/s (Nowosiółki, 2026-10-16)

## Gauging stations on the Supraśl

The following 3 gauging stations report discharge for the Supraśl, 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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Nowosiółki | Poland | 1.02 | Normal — 15% below the historic median | 2026-10-16 | instantaneous | operational value | IMGW-PIB | 53.173, 23.53 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |
| Supraśl | Poland | 3.14 | Much below normal — 28% below the historic median | 2026-10-16 | instantaneous | operational value | IMGW-PIB | 53.213, 23.338 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |
| Fasty | Poland | 7.62 | Normal — 1% below the historic median | 2026-10-16 | instantaneous | operational value | IMGW-PIB | 53.179, 23.027 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |

## Related rivers

-   [Vistula](/rivers/vistula.html)
-   [Oder](/rivers/oder.html)
-   [Bug](/rivers/bug.html)
-   [Warta](/rivers/warta.html)
-   [Narew](/rivers/narew.html)
-   [Noteć](/rivers/notec.html)
-   [San](/rivers/san.html)
-   [Bug](/rivers/bug-129.html)
-   [Wieprz](/rivers/wieprz.html)
-   [Pilica](/rivers/pilica.html)
-   [Bug](/rivers/bug-130.html)
-   [Bzura](/rivers/bzura.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 Supraśl on the interactive map →](/)