Where is Ala-Säynätjärvi?

Ala-Säynätjärvi is a lake in Mikkeli, Finland. This page reports official water-quality measurements, shown as reported.

Is Ala-Säynätjärvi safe to swim in?

Ala-Säynätjärvi 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 Ala-Säynätjärvi?

Ala-Säynätjärvi has a maximum depth of 27.9 feet.

Ala-Säynätjärvi

Mikkeli, FinlandView map Directions

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

Clarity

1.3 m

Typical for Finland

Secchi · sampled 2025

Phosphorus

9 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

4.8 µg/L

Typical for Finland

Measured by Syke

Max depth

8.5 m

Bathymetric survey

28 ft max depth
Limited data

See the measurements Directions Where to stay

Ala-Säynätjärvi in Mikkeli, Finland has official water-quality measurements, shown as reported. Water clarity: 1.3 m visibility. Phosphorus: 9 µg/L. Chlorophyll-a (algae): 4.8 µg/L. Maximum depth: 27.9 ft.

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How Ala-Säynätjärvi is classified

Ala-Säynätjärvi 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.

Ala-Säynätjärvi is a lake in Mikkeli County, Finland with a maximum depth of 28 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-03-19. 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 Ala-Säynätjärvi 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 Ala-Säynätjärvi

These are the measurements Syke publishes for Ala-Säynätjärvi. More on the source.

Murky, only visible to about 4.1 ft. Phosphorus 9 µg/L. Chlorophyll-a 4.8 µg/L. TSI 46.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	1.25m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	9µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	4.8µg/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.	46	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Ala-Säynätjärvi

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

Lake Details

Max depth

8.5 m

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Fishing Ala-Säynätjärvi

→ Ala-Säynätjärvi fishing regulations (limits, seasons, special rules)

Frequently asked questions about Ala-Säynätjärvi

Where is Ala-Säynätjärvi?: Ala-Säynätjärvi is a lake in Mikkeli, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Ala-Säynätjärvi?: Ala-Säynätjärvi in Mikkeli, Finland has official water-quality measurements, shown as reported. Water clarity: 1.3 m visibility. Phosphorus: 9 µg/L. Chlorophyll-a (algae): 4.8 µg/L. Maximum depth: 27.9 ft.
Is Ala-Säynätjärvi safe to swim in?: Ala-Säynätjärvi 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 Ala-Säynätjärvi?: Ala-Säynätjärvi has a maximum depth of 27.9 feet.

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Where this data comes from

5 measurements from 1 monitoring station, 2024–2025. 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-vesla5 samples · 2024–2025

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

68988

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