**Archived extract:** 2026-10-14 (UTC). Frozen data; observation dates are shown as captured. [View the current site](/)

# Piirteenvirta river

The Piirteenvirta is a European river flowing through Finland. As of 2026-10-10, the Piirteenvirta was flowing at about 141.1 m³/s at the Voikkaa gauge.

**Canonical name:** Piirteenvirta

**Countries:** Finland

**Maximum upstream drainage area:** 26,795 km²

**Mapped river length:** 71.6 km

**Gauging stations:** 13

**Classification:** Major European river

**Latest measured discharge:** 141.1 m³/s (Voikkaa, 2026-10-10)

## Gauging stations on the Piirteenvirta

The following 13 gauging stations report discharge for the Piirteenvirta, 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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Voikkaa | Finland | 141.1 | Much below normal — 24% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.938, 26.601 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Kuusankoski | Finland | 146.7 | Much below normal — 26% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.907, 26.652 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Keltti | Finland | 151.8 | Below normal — 18% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.874, 26.617 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Myllykoski | Finland | 152.4 | Much below normal — 19% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.767, 26.775 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Anjala | Finland | 151.5 | Much below normal — 18% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.698, 26.821 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Piirteenvirta | Finland | 162 | Much below normal — 20% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.668, 26.846 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Piirteenvirta | Finland | 154.1 | Much below normal — 19% below the historic median | 2026-10-11 | daily mean | SYKE flag 108 | Finnish Environment Institute | 60.641, 26.76 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Pernoonkoski | Finland | 56.83 | Much below normal — 32% below the historic median | 2026-10-11 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.58, 26.791 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Kymijoki, itähaara | Finland | 64.98 | Much below normal — 25% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.522, 26.867 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Koivukoski | Finland | 21.33 | Much below normal — 16% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.522, 26.867 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Pihkoo | Finland | 0.5 | Normal — at the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.52, 26.863 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Korkeakoski | Finland | 43.65 | Much below normal — 28% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.531, 26.911 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Sutela | Finland | 21.33 | Below normal — 8% below the historic median | 2026-10-10 | daily mean | SYKE flag not supplied | Finnish Environment Institute | 60.509, 26.879 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |

## Related rivers

-   [Vuoksi](/archive/2026-10-14/rivers/vuoksi.html)
-   [Ossauskoski](/archive/2026-10-14/rivers/ossauskoski.html)
-   [Valajaskoski](/archive/2026-10-14/rivers/valajaskoski.html)
-   [Karunki](/archive/2026-10-14/rivers/karunki.html)
-   [Kemijoki](/archive/2026-10-14/rivers/kemijoki.html)
-   [Pirttikoski](/archive/2026-10-14/rivers/pirttikoski.html)
-   [Seitakorva](/archive/2026-10-14/rivers/seitakorva.html)
-   [Merikoski](/archive/2026-10-14/rivers/merikoski.html)
-   [Konnivesi](/archive/2026-10-14/rivers/konnivesi.html)
-   [Kokemenjoki](/archive/2026-10-14/rivers/kokemenjoki.html)
-   [Kolsi](/archive/2026-10-14/rivers/kolsi.html)
-   [Pälli](/archive/2026-10-14/rivers/palli.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 2026-10-14T13:18:09.546920+00:00. This page generated 2026-10-14T13:21:29.953Z. Discharge values carry their own observation dates in the table above.

[Explore the Piirteenvirta on the interactive map →](/archive/2026-10-14/)