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LakeQuality

Tuusulanjärvi

Tuusula, FinlandView mapDirections

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

Clarity
0.6 m
Murkier than most
Secchi · sampled 2026
Phosphorus
73 µg/L
More phosphorus than most
Measured by Syke
Chlorophyll-a
21 µg/L
More algae than most
Measured by Syke
Max depth
10 m
Bathymetric survey
  • 33 ft max depth
  • Limited data

Tuusulanjärvi in Tuusula, Finland has official water-quality measurements, shown as reported. Water clarity: 0.6 m visibility. Phosphorus: 73 µg/L. Chlorophyll-a (algae): 21 µg/L. Maximum depth: 32.8 ft.

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How Tuusulanjärvi is classified

Tuusulanjärvi 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.

Tuusulanjärvi is a lake in Tuusula County, Finland with a maximum depth of 33 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2026-07-15. Methodology: how these readings are compared.

What Tuusulanjärvi is good for

From access and monitoring records, not editorial picks.

  • Deep water32.8 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 Tuusulanjärvi 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 Tuusulanjärvi

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

Very murky, less than 1.8 ft of visibility. Phosphorus 73 µg/L. Chlorophyll-a 21 µg/L. TSI 65.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)0.55mMeasured, not scored

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

Total phosphorus73µg/LMeasured, not scored

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

Chlorophyll-a (algae)21µg/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.65Eutrophic
OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Tuusulanjärvi

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

Lake Details

Max depth

10 m

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Stays near Tuusulanjärvi

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Frequently asked questions about Tuusulanjärvi

Where is Tuusulanjärvi?

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

What is the water quality of Tuusulanjärvi?

Tuusulanjärvi in Tuusula, Finland has official water-quality measurements, shown as reported. Water clarity: 0.6 m visibility. Phosphorus: 73 µg/L. Chlorophyll-a (algae): 21 µg/L. Maximum depth: 32.8 ft.

Measurements on this page ↑

Is Tuusulanjärvi safe to swim in?

Tuusulanjärvi 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 Tuusulanjärvi?

Tuusulanjärvi has a maximum depth of 32.8 feet.

Where this data comes from

337 measurements from 1 monitoring station, 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 Centressyke-vesla337 samples · 2016–2026

Analytical methods

  • SYKE VESLA
Monitoring station identifiers (1)
  • 842

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