Where is Iso Valkeajärvi?

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

Is Iso Valkeajärvi safe to swim in?

Iso Valkeajärvi 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 Valkeajärvi?

Iso Valkeajärvi has a maximum depth of 67.3 feet.

Iso Valkeajärvi

Virrat, FinlandView map Directions

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

Clarity

3.7 m

Clearer than most

Secchi · sampled 2019

Phosphorus

5 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

2.5 µg/L

Less algae than most

Measured by Syke

Max depth

20.5 m

Bathymetric survey

67 ft max depth
Limited data

See the measurements Directions Where to stay

Iso Valkeajärvi in Virrat, Finland has official water-quality measurements, shown as reported. Water clarity: 3.7 m visibility. Phosphorus: 5 µg/L. Chlorophyll-a (algae): 2.5 µg/L. Maximum depth: 67.3 ft.

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How Iso Valkeajärvi is classified

Iso Valkeajärvi 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 Valkeajärvi is a lake in Virrat County, Finland with a maximum depth of 67 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2019-08-28. Methodology: how these readings are compared.

What Iso Valkeajärvi is good for

From access and monitoring records, not editorial picks.

Clear water12 ft of visibility
Deep water67.3 ft surveyed max depth

Swimming conditions

No reading

Limited data

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

Whether Iso Valkeajärvi 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 Valkeajärvi

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

Good clarity, visible to about 12 ft. Phosphorus 5 µg/L. Chlorophyll-a 2.5 µg/L. TSI 36.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	3.65m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	5µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	2.5µg/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.	36	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Low nutrients, clear water. No reading is a swimming clearance.

Ask about Iso Valkeajärvi

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

Lake Details

Max depth

20.5 m

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Fishing Iso Valkeajärvi

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

Frequently asked questions about Iso Valkeajärvi

Where is Iso Valkeajärvi?: Iso Valkeajärvi is a lake in Virrat, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Iso Valkeajärvi?: Iso Valkeajärvi in Virrat, Finland has official water-quality measurements, shown as reported. Water clarity: 3.7 m visibility. Phosphorus: 5 µg/L. Chlorophyll-a (algae): 2.5 µg/L. Maximum depth: 67.3 ft.
Is Iso Valkeajärvi safe to swim in?: Iso Valkeajärvi 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 Valkeajärvi?: Iso Valkeajärvi has a maximum depth of 67.3 feet.

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Where this data comes from

11 measurements from 1 monitoring station, 2016–2019. 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-vesla11 samples · 2016–2019

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

8440

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