Karijärvi is a lake in Kouvola, Finland. This page reports official water-quality measurements, shown as reported.

Is Karijärvi safe to swim in?

Karijärvi 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 Karijärvi?

Karijärvi has a maximum depth of 95.1 feet.

Karijärvi

Kouvola, FinlandView map Directions

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

Clarity

5 m

Clearer than most

Secchi · sampled 2025

Phosphorus

3 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

2.9 µg/L

Less algae than most

Measured by Syke

Max depth

29 m

Bathymetric survey

95 ft max depth
Limited data

See the measurements Directions Where to stay

Karijärvi in Kouvola, Finland has official water-quality measurements, shown as reported. Water clarity: 5 m visibility. Phosphorus: 3 µg/L. Chlorophyll-a (algae): 2.9 µg/L. Maximum depth: 95.1 ft.

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How Karijärvi is classified

Karijärvi 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.

Karijärvi is a lake in Kouvola County, Finland with a maximum depth of 95 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-10-20. Methodology: how these readings are compared.

What Karijärvi is good for

From access and monitoring records, not editorial picks.

Clear water16.4 ft of visibility
Deep water95.1 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 Karijärvi 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 Karijärvi

These are the measurements Syke publishes for Karijärvi. More on the source.

Crystal clear, you can see 16.4 ft down. Phosphorus 3 µg/L. Chlorophyll-a 2.9 µg/L. TSI 33.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	5m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	3µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	2.9µg/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.	33	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

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

Ask about Karijärvi

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

Lake Details

Max depth

29 m

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Stays near Karijärvi

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Fishing Karijärvi

→ Karijärvi fishing regulations (limits, seasons, special rules)

Frequently asked questions about Karijärvi

Where is Karijärvi?: Karijärvi is a lake in Kouvola, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Karijärvi?: Karijärvi in Kouvola, Finland has official water-quality measurements, shown as reported. Water clarity: 5 m visibility. Phosphorus: 3 µg/L. Chlorophyll-a (algae): 2.9 µg/L. Maximum depth: 95.1 ft.
Is Karijärvi safe to swim in?: Karijärvi 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 Karijärvi?: Karijärvi has a maximum depth of 95.1 feet.

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Where this data comes from

28 measurements from 1 monitoring station, 2016–2025. 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-vesla28 samples · 2016–2025

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

12162

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