Where is Tepoonjärvi?

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

Is Tepoonjärvi safe to swim in?

Tepoonjärvi 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 Tepoonjärvi?

Tepoonjärvi has a maximum depth of 35.4 feet.

Tepoonjärvi

Sysmä, FinlandView map Directions

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

Clarity

2.7 m

Clearer than most

Secchi · sampled 2022

Phosphorus

8.9 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

4 µg/L

Less algae than most

Measured by Syke

Max depth

10.8 m

Bathymetric survey

35 ft max depth
Limited data

See the measurements Directions Where to stay

Tepoonjärvi in Sysmä, Finland has official water-quality measurements, shown as reported. Water clarity: 2.7 m visibility. Phosphorus: 8.9 µg/L. Chlorophyll-a (algae): 4 µg/L. Maximum depth: 35.4 ft.

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How Tepoonjärvi is classified

Tepoonjärvi 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.

Tepoonjärvi is a lake in Sysmä County, Finland with a maximum depth of 35 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2022-08-15. Methodology: how these readings are compared.

What Tepoonjärvi is good for

From access and monitoring records, not editorial picks.

Deep water35.4 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 Tepoonjärvi 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 Tepoonjärvi

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

Moderate clarity, visible to about 8.7 ft. Phosphorus 8.9 µg/L. Chlorophyll-a 4 µg/L. TSI 42.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.65m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	8.9µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	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.	42	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Tepoonjärvi

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

Lake Details

Max depth

10.8 m

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Stays near Tepoonjärvi

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Fishing Tepoonjärvi

→ Tepoonjärvi fishing regulations (limits, seasons, special rules)

Frequently asked questions about Tepoonjärvi

Where is Tepoonjärvi?: Tepoonjärvi is a lake in Sysmä, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Tepoonjärvi?: Tepoonjärvi in Sysmä, Finland has official water-quality measurements, shown as reported. Water clarity: 2.7 m visibility. Phosphorus: 8.9 µg/L. Chlorophyll-a (algae): 4 µg/L. Maximum depth: 35.4 ft.
Is Tepoonjärvi safe to swim in?: Tepoonjärvi 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 Tepoonjärvi?: Tepoonjärvi has a maximum depth of 35.4 feet.

Explore Tepoonjärvi 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

16 measurements from 1 monitoring station, 2016–2022. 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-vesla16 samples · 2016–2022

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

14864

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