Where is Iso-Sintiö Lake?

Iso-Sintiö Lake is a lake in Kuhmo, Finland. This page reports official water-quality measurements, shown as reported.

Is Iso-Sintiö Lake safe to swim in?

Iso-Sintiö 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 Iso-Sintiö Lake?

Iso-Sintiö Lake has a maximum depth of 19.7 feet.

Iso-Sintiö Lake

Kuhmo, FinlandView map Directions

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

Clarity

0.9 m

Typical for Finland

Secchi · sampled 2025

Phosphorus

30.5 µg/L

More phosphorus than most

Measured by Syke

Chlorophyll-a

14.4 µg/L

Typical for Finland

Measured by Syke

Max depth

6 m

Bathymetric survey

20 ft max depth
Limited data

See the measurements Directions Where to stay

Iso-Sintiö Lake in Kuhmo, Finland has official water-quality measurements, shown as reported. Water clarity: 0.9 m visibility. Phosphorus: 30.5 µg/L. Chlorophyll-a (algae): 14.4 µg/L. Maximum depth: 19.7 ft.

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How Iso-Sintiö Lake is classified

Iso-Sintiö 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.

Iso-Sintiö Lake is a lake in Kuhmo County, Finland with a maximum depth of 20 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-10-16. 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 Iso-Sintiö 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 Iso-Sintiö Lake

These are the measurements Syke publishes for Iso-Sintiö Lake. More on the source.

Very murky, less than 3 ft of visibility. Phosphorus 30.5 µg/L. Chlorophyll-a 14.4 µg/L. TSI 57.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.9m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	30.5µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	14.4µg/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.	57	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Iso-Sintiö Lake

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

Lake Details

Max depth

6 m

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Fishing Iso-Sintiö Lake

→ Iso-Sintiö Lake fishing regulations (limits, seasons, special rules)

Frequently asked questions about Iso-Sintiö Lake

Where is Iso-Sintiö Lake?: Iso-Sintiö Lake is a lake in Kuhmo, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Iso-Sintiö Lake?: Iso-Sintiö Lake in Kuhmo, Finland has official water-quality measurements, shown as reported. Water clarity: 0.9 m visibility. Phosphorus: 30.5 µg/L. Chlorophyll-a (algae): 14.4 µg/L. Maximum depth: 19.7 ft.
Is Iso-Sintiö Lake safe to swim in?: Iso-Sintiö 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 Iso-Sintiö Lake?: Iso-Sintiö Lake has a maximum depth of 19.7 feet.

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Where this data comes from

20 measurements from 1 monitoring station, 2019–2025. 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-vesla20 samples · 2019–2025

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

34777

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