Where is Köyry Lake?

Köyry Lake is a lake in Rovaniemi, Finland. This page reports official water-quality measurements, shown as reported.

Is Köyry Lake safe to swim in?

Köyry Lake 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 Köyry Lake?

Köyry Lake has a maximum depth of 38.7 feet.

Köyry Lake

Rovaniemi, FinlandView map Directions

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

Clarity

2.2 m

Clearer than most

Secchi · sampled 2023

Phosphorus

8.8 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

4.7 µg/L

Typical for Finland

Measured by Syke

Max depth

11.8 m

Bathymetric survey

39 ft max depth
Limited data

See the measurements Directions Where to stay

Köyry Lake in Rovaniemi, Finland has official water-quality measurements, shown as reported. Water clarity: 2.2 m visibility. Phosphorus: 8.8 µg/L. Chlorophyll-a (algae): 4.7 µg/L. Maximum depth: 38.7 ft.

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How Köyry Lake is classified

Köyry Lake 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.

Köyry Lake is a lake in Rovaniemi County, Finland with a maximum depth of 39 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2023-09-19. Methodology: how these readings are compared.

What Köyry Lake is good for

From access and monitoring records, not editorial picks.

Deep water38.7 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 Köyry Lake 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 Köyry Lake

These are the measurements Syke publishes for Köyry Lake. More on the source.

Moderate clarity, visible to about 7.2 ft. Phosphorus 8.8 µg/L. Chlorophyll-a 4.7 µg/L. TSI 43.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.2m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	8.8µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	4.7µg/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.	43	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Köyry Lake

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

Lake Details

Max depth

11.8 m

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Stays near Köyry Lake

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Fishing Köyry Lake

→ Köyry Lake fishing regulations (limits, seasons, special rules)

Frequently asked questions about Köyry Lake

Where is Köyry Lake?: Köyry Lake is a lake in Rovaniemi, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Köyry Lake?: Köyry Lake in Rovaniemi, Finland has official water-quality measurements, shown as reported. Water clarity: 2.2 m visibility. Phosphorus: 8.8 µg/L. Chlorophyll-a (algae): 4.7 µg/L. Maximum depth: 38.7 ft.
Is Köyry Lake safe to swim in?: Köyry Lake 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 Köyry Lake?: Köyry Lake has a maximum depth of 38.7 feet.

Explore Köyry Lake across LakeQuality

Lake Fishing Forecast

Species activity outlook by water temperature and season

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EU bathing ratings and named-lake measurements

Where this data comes from

9 measurements from 1 monitoring station, 2023. 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-vesla9 samples · 2023

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

37861

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