Where is Suomunjärvi?

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

Is Suomunjärvi safe to swim in?

Suomunjärvi 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 Suomunjärvi?

Suomunjärvi has a maximum depth of 82 feet.

Suomunjärvi

Lieksa, FinlandView map Directions

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

Clarity

2.1 m

Typical for Finland

Secchi · sampled 2026

Phosphorus

6.3 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

2.8 µg/L

Less algae than most

Measured by Syke

Max depth

25 m

Bathymetric survey

82 ft max depth
Limited data

See the measurements Directions Where to stay

Suomunjärvi in Lieksa, Finland has official water-quality measurements, shown as reported. Water clarity: 2.1 m visibility. Phosphorus: 6.3 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Maximum depth: 82 ft.

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How Suomunjärvi is classified

Suomunjärvi 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.

Suomunjärvi is a lake in Lieksa County, Finland with a maximum depth of 82 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2026-07-30. Methodology: how these readings are compared.

What Suomunjärvi is good for

From access and monitoring records, not editorial picks.

Deep water82 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 Suomunjärvi 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 Suomunjärvi

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

Moderate clarity, visible to about 6.7 ft. Phosphorus 6.3 µg/L. Chlorophyll-a 2.8 µg/L. TSI 40.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.05m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	6.3µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	2.8µg/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.	40	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Suomunjärvi

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

Lake Details

Max depth

25 m

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Stays near Suomunjärvi

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Fishing Suomunjärvi

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

Frequently asked questions about Suomunjärvi

Where is Suomunjärvi?: Suomunjärvi is a lake in Lieksa, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Suomunjärvi?: Suomunjärvi in Lieksa, Finland has official water-quality measurements, shown as reported. Water clarity: 2.1 m visibility. Phosphorus: 6.3 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Maximum depth: 82 ft.
Is Suomunjärvi safe to swim in?: Suomunjärvi 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 Suomunjärvi?: Suomunjärvi has a maximum depth of 82 feet.

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Where this data comes from

31 measurements from 1 monitoring station, 2017–2026. Retrieved from Syke VESLA (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

Finnish Environment Institute (Syke) and ELY Centressyke-vesla31 samples · 2017–2026

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

24485

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