Iso-Perkai Lake
Pieksämäki, FinlandView mapDirections
Syke publishes the water-quality measurements for Iso-Perkai Lake. Here is what has been measured.
- 12 ft max depth
- Limited data
Iso-Perkai Lake in Pieksämäki, Finland has official water-quality measurements, shown as reported. Water clarity: 0.8 m visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 6.4 µg/L. Maximum depth: 11.5 ft.
How Iso-Perkai Lake is classified
Iso-Perkai Lake 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-Perkai Lake is a lake in Pieksämäki County, Finland with a maximum depth of 12 feet.
Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2026-08-04. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Iso-Perkai Lake 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.
Water quality measurements for Iso-Perkai Lake
These are the measurements Syke publishes for Iso-Perkai Lake. More on the source.
Very murky, less than 2.6 ft of visibility. Phosphorus 21 µg/L. Chlorophyll-a 6.4 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.8m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 21µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 6.4µg/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. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Lake Details
Max depth
3.5 m
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Frequently asked questions about Iso-Perkai Lake
Where is Iso-Perkai Lake?
- Iso-Perkai Lake is a lake in Pieksämäki, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Iso-Perkai Lake?
- Iso-Perkai Lake in Pieksämäki, Finland has official water-quality measurements, shown as reported. Water clarity: 0.8 m visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 6.4 µg/L. Maximum depth: 11.5 ft.
Is Iso-Perkai Lake safe to swim in?
- Iso-Perkai Lake 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-Perkai Lake?
- Iso-Perkai Lake has a maximum depth of 11.5 feet.
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Where this data comes from
54 measurements from 2 monitoring stations, 2016–2026. Retrieved from Syke VESLA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Finnish Environment Institute (Syke) and ELY Centres
syke-vesla54 samples · 2016–2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (2)
1547215466
Authority classifications are shown as the authority published them. See where the data comes from and data sources.