Where is Ylä-Koutuanjärvi?

Ylä-Koutuanjärvi is a lake in Oulu, Finland. This page reports official water-quality measurements, shown as reported.

Is Ylä-Koutuanjärvi safe to swim in?

Ylä-Koutuanjärvi 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 Ylä-Koutuanjärvi?

The available depth estimate for Ylä-Koutuanjärvi is shallower than its measured water clarity, which cannot be right, so no depth is shown.

Ylä-Koutuanjärvi

Oulu, FinlandView map Directions

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

Clarity

0.5 m

Murkier than most

Secchi · sampled 2025

Phosphorus

74 µg/L

More phosphorus than most

Measured by Syke

Chlorophyll-a

53.5 µg/L

More algae than most

Measured by Syke

Limited data

See the measurements Directions Where to stay

Ylä-Koutuanjärvi in Oulu, Finland has official water-quality measurements, shown as reported. Water clarity: 0.5 m visibility. Phosphorus: 74 µg/L. Chlorophyll-a (algae): 53.5 µg/L.

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How Ylä-Koutuanjärvi is classified

Ylä-Koutuanjärvi 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.

Ylä-Koutuanjärvi is a lake in Oulu County, Finland.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-09-09. 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 Ylä-Koutuanjärvi 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 Ylä-Koutuanjärvi

These are the measurements Syke publishes for Ylä-Koutuanjärvi. More on the source.

Very murky, less than 1.5 ft of visibility. Phosphorus 74 µg/L. Chlorophyll-a 53.5 µg/L. TSI 69.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.45m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	74µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	53.5µg/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.	69	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Ylä-Koutuanjärvi

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

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Stays near Ylä-Koutuanjärvi

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Fishing Ylä-Koutuanjärvi

→ Ylä-Koutuanjärvi fishing regulations (limits, seasons, special rules)

Frequently asked questions about Ylä-Koutuanjärvi

Where is Ylä-Koutuanjärvi?: Ylä-Koutuanjärvi is a lake in Oulu, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Ylä-Koutuanjärvi?: Ylä-Koutuanjärvi in Oulu, Finland has official water-quality measurements, shown as reported. Water clarity: 0.5 m visibility. Phosphorus: 74 µg/L. Chlorophyll-a (algae): 53.5 µg/L.
Is Ylä-Koutuanjärvi safe to swim in?: Ylä-Koutuanjärvi 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 Ylä-Koutuanjärvi?: The available depth estimate for Ylä-Koutuanjärvi is shallower than its measured water clarity, which cannot be right, so no depth is shown.

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Where this data comes from

24 measurements from 1 monitoring station, 2018–2025. 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-vesla24 samples · 2018–2025

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

53996

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