# Piirteenvirta river

The Piirteenvirta is a European river flowing through Finland. As of 2026-10-14, the Piirteenvirta was flowing at about 174.2 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:** 174.2 m³/s (Voikkaa, 2026-10-14)

## 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 | 174.2 | Normal — 6% below the historic median | 2026-10-14 | 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 | 172.4 | Below normal — 13% below the historic median | 2026-10-14 | 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 | 179.2 | Normal — 3% below the historic median | 2026-10-14 | 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 | 177.6 | Normal — 6% below the historic median | 2026-10-14 | 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 | 160.6 | Below normal — 13% below the historic median | 2026-10-15 | daily mean | SYKE flag 108 | Finnish Environment Institute | 60.698, 26.821 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Piirteenvirta | Finland | 171 | Below normal — 15% below the historic median | 2026-10-15 | daily mean | SYKE flag 108 | Finnish Environment Institute | 60.668, 26.846 | [source](https://www.syke.fi/en/environmental-data/open-web-services/environmental-data-apis) |
| Piirteenvirta | Finland | 168.2 | Below normal — 11% below the historic median | 2026-10-15 | 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 | 67.71 | Below normal — 19% below the historic median | 2026-10-15 | 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 | 74.93 | Below normal — 13% below the historic median | 2026-10-14 | 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 | 21.46 | Much below normal — 16% below the historic median | 2026-10-14 | 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 | 2026-10-14 | 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 | 53.47 | Normal — 12% below the historic median | 2026-10-14 | 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 | 21.46 | Below normal — 7% below the historic median | 2026-10-14 | 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](/rivers/vuoksi.html)
-   [Ossauskoski](/rivers/ossauskoski.html)
-   [Valajaskoski](/rivers/valajaskoski.html)
-   [Karunki](/rivers/karunki.html)
-   [Kemijoki](/rivers/kemijoki.html)
-   [Pirttikoski](/rivers/pirttikoski.html)
-   [Seitakorva](/rivers/seitakorva.html)
-   [Merikoski](/rivers/merikoski.html)
-   [Konnivesi](/rivers/konnivesi.html)
-   [Kokemenjoki](/rivers/kokemenjoki.html)
-   [Kolsi](/rivers/kolsi.html)
-   [Pälli](/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 2026-10-16T13:31:53.036165+00:00. This page generated 2026-10-16T13:35:10.972Z. Discharge values carry their own observation dates in the table above.

[Explore the Piirteenvirta on the interactive map →](/)