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LakeQuality

Ruokojärvi

Suomussalmi, FinlandView mapDirections

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

Clarity
1.4 m
Typical for Finland
Secchi · sampled 2026
Phosphorus
18 µg/L
Typical for Finland
Measured by Syke
Chlorophyll-a
12 µg/L
Typical for Finland
Measured by Syke
Max depth
7 m
Bathymetric survey
  • 23 ft max depth
  • Limited data

Ruokojärvi in Suomussalmi, Finland has official water-quality measurements, shown as reported. Water clarity: 1.4 m visibility. Phosphorus: 18 µg/L. Chlorophyll-a (algae): 12 µg/L. Maximum depth: 23 ft.

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How Ruokojärvi is classified

Ruokojärvi 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.

Ruokojärvi is a lake in Suomussalmi County, Finland with a maximum depth of 23 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2026-07-01. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

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

Whether Ruokojärvi 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 Ruokojärvi

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

Murky, only visible to about 4.6 ft. Phosphorus 18 µg/L. Chlorophyll-a 12 µg/L. TSI 52.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)1.4mMeasured, not scored

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus18µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)12µg/LMeasured, 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.52Eutrophic
OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Ruokojärvi

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

Lake Details

Max depth

7 m

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Fishing Ruokojärvi

Frequently asked questions about Ruokojärvi

Where is Ruokojärvi?

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

What is the water quality of Ruokojärvi?

Ruokojärvi in Suomussalmi, Finland has official water-quality measurements, shown as reported. Water clarity: 1.4 m visibility. Phosphorus: 18 µg/L. Chlorophyll-a (algae): 12 µg/L. Maximum depth: 23 ft.

Measurements on this page ↑

Is Ruokojärvi safe to swim in?

Ruokojärvi 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.

Swimming on this page ↑

How deep is Ruokojärvi?

Ruokojärvi has a maximum depth of 23 feet.

Where this data comes from

61 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-vesla61 samples · 2017–2026

Analytical methods

  • SYKE VESLA
Monitoring station identifiers (1)
  • 33697

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