Where is Iso Korpijärvi?

Iso Korpijärvi is a lake in Kihniö, Finland. This page reports official water-quality measurements, shown as reported.

Is Iso Korpijärvi safe to swim in?

Iso Korpijärvi has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.

How deep is Iso Korpijärvi?

Iso Korpijärvi has a maximum depth of 16.4 feet.

Iso Korpijärvi

Kihniö, FinlandView map Directions

Syke publishes the water-quality measurements for Iso Korpijärvi. Here is what has been measured.

Clarity

0.6 m

Murkier than most

Secchi · sampled 2023

Phosphorus

31 µg/L

More phosphorus than most

Measured by Syke

Chlorophyll-a

12 µg/L

Typical for Finland

Measured by Syke

Max depth

5 m

Bathymetric survey

16 ft max depth
Limited data

See the measurements Directions Where to stay

Iso Korpijärvi in Kihniö, Finland has official water-quality measurements, shown as reported. Water clarity: 0.6 m visibility. Phosphorus: 31 µg/L. Chlorophyll-a (algae): 12 µg/L. Maximum depth: 16.4 ft.

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How Iso Korpijärvi is classified

Iso Korpijärvi in Finland is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).

LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.

Monitoring: the Finnish Environment Institute (Syke) and the ELY Centres.

Iso Korpijärvi is a lake in Kihniö County, Finland with a maximum depth of 16 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2023-08-22. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Iso Korpijärvi is safe to swim in today is a call for the Finnish Environment Institute (Syke) and the ELY Centres and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Iso Korpijärvi

These are the measurements Syke publishes for Iso Korpijärvi. More on the source.

Very murky, less than 1.8 ft of visibility. Phosphorus 31 µg/L. Chlorophyll-a 12 µg/L. TSI 59.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.55m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	31µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	12µg/L	Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water.
Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.	59	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Iso Korpijärvi

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

5 m

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Fishing Iso Korpijärvi

→ Iso Korpijärvi fishing regulations (limits, seasons, special rules)

Frequently asked questions about Iso Korpijärvi

Where is Iso Korpijärvi?: Iso Korpijärvi is a lake in Kihniö, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Iso Korpijärvi?: Iso Korpijärvi in Kihniö, Finland has official water-quality measurements, shown as reported. Water clarity: 0.6 m visibility. Phosphorus: 31 µg/L. Chlorophyll-a (algae): 12 µg/L. Maximum depth: 16.4 ft.
Is Iso Korpijärvi safe to swim in?: Iso Korpijärvi has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.
How deep is Iso Korpijärvi?: Iso Korpijärvi has a maximum depth of 16.4 feet.

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Where this data comes from

36 measurements from 1 monitoring station, 2016–2023. Retrieved from Syke VESLA (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

Finnish Environment Institute (Syke) and ELY Centressyke-vesla36 samples · 2016–2023

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

70485

Authority classifications are shown as the authority published them. See where the data comes from and data sources.