**Archived extract:** 2026-10-11 (UTC). Frozen data; observation dates are shown as captured. [View the current site](/)

# San river

The San is a European river flowing through Poland. As of 2026-10-11, the San was flowing at about 1.73 m³/s at the Zatwarnica gauge.

**Canonical name:** San

**Countries:** Poland

**Maximum upstream drainage area:** 3,675 km²

**Mapped river length:** 178.3 km

**Gauging stations:** 6

**Latest measured discharge:** 1.73 m³/s (Zatwarnica, 2026-10-11)

## Gauging stations on the San

The following 6 gauging stations report discharge for the San, 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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Zatwarnica | Poland | 1.73 | Much below normal — 90% below the historic median | 2026-10-11 | instantaneous | operational value | IMGW-PIB | 49.235, 22.563 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |
| Hoczew | Poland | 0.36 | Much below normal — 95% below the historic median | 2026-10-11 | instantaneous | operational value | IMGW-PIB | 49.424, 22.328 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |
| Lesko | Poland | 8.5 | Much below normal — 68% below the historic median | 2026-10-11 | instantaneous | operational value | IMGW-PIB | 49.469, 22.322 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |
| Zagórz | Poland | 0.42 | Much below normal — 97% below the historic median | 2026-10-11 | instantaneous | operational value | IMGW-PIB | 49.513, 22.269 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |
| Olchowce | Poland | 9.6 | Much below normal — 73% below the historic median | 2026-10-11 | instantaneous | operational value | IMGW-PIB | 49.556, 22.219 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |
| Dynów | Poland | 9.7 | Much below normal — 78% below the historic median | 2026-10-11 | instantaneous | operational value | IMGW-PIB | 49.801, 22.244 | [source](https://danepubliczne.imgw.pl/api/data/hydro) |

## Related rivers

-   [Vistula](/archive/2026-10-11/rivers/vistula.html)
-   [Oder](/archive/2026-10-11/rivers/oder.html)
-   [Bug](/archive/2026-10-11/rivers/bug.html)
-   [Warta](/archive/2026-10-11/rivers/warta.html)
-   [Narew](/archive/2026-10-11/rivers/narew.html)
-   [Noteć](/archive/2026-10-11/rivers/notec.html)
-   [San](/archive/2026-10-11/rivers/san.html)
-   [Bug](/archive/2026-10-11/rivers/bug-129.html)
-   [Wieprz](/archive/2026-10-11/rivers/wieprz.html)
-   [Pilica](/archive/2026-10-11/rivers/pilica.html)
-   [Bug](/archive/2026-10-11/rivers/bug-130.html)
-   [Bzura](/archive/2026-10-11/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 2026-10-11T12:34:03.228083+00:00. This page generated 2026-10-11T12:41:16.696Z. Discharge values carry their own observation dates in the table above.

[Explore the San on the interactive map →](/archive/2026-10-11/)