Karkjärvi
Raasepori, FinlandView mapDirections
Syke publishes the water-quality measurements for Karkjärvi. Here is what has been measured.
- 40 ft max depth
- Limited data
Karkjärvi in Raasepori, Finland has official water-quality measurements, shown as reported. Water clarity: 0.9 m visibility. Phosphorus: 10 µg/L. Chlorophyll-a (algae): 9 µg/L. Maximum depth: 39.7 ft.
How Karkjärvi is classified
Karkjärvi 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.
Karkjärvi is a lake in Raasepori County, Finland with a maximum depth of 40 feet.
Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2019-08-08. Methodology: how these readings are compared.
What Karkjärvi is good for
From access and monitoring records, not editorial picks.
- Deep water39.7 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Karkjärvi 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 Karkjärvi
These are the measurements Syke publishes for Karkjärvi. More on the source.
Very murky, less than 3 ft of visibility. Phosphorus 10 µg/L. Chlorophyll-a 9 µg/L. TSI 50.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.9m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 9µg/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. | 50 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Karkjärvi
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
12.1 m
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Fishing Karkjärvi
Frequently asked questions about Karkjärvi
Where is Karkjärvi?
- Karkjärvi is a lake in Raasepori, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Karkjärvi?
- Karkjärvi in Raasepori, Finland has official water-quality measurements, shown as reported. Water clarity: 0.9 m visibility. Phosphorus: 10 µg/L. Chlorophyll-a (algae): 9 µg/L. Maximum depth: 39.7 ft.
Is Karkjärvi safe to swim in?
- Karkjärvi 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 Karkjärvi?
- Karkjärvi has a maximum depth of 39.7 feet.
Explore Karkjärvi across LakeQuality
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Where this data comes from
5 measurements from 1 monitoring station, 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 Centres
syke-vesla5 samples · 2019
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
49079
Authority classifications are shown as the authority published them. See where the data comes from and data sources.