Where is Degersjön Lake?

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

Is Degersjön Lake safe to swim in?

Degersjön 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 Degersjön Lake?

Degersjön Lake has a maximum depth of 69.9 feet.

Degersjön Lake

Raasepori, FinlandView map Directions

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

Clarity

2.5 m

Clearer than most

Secchi · sampled 2025

Phosphorus

11 µg/L

Typical for Finland

Measured by Syke

Chlorophyll-a

3.5 µg/L

Less algae than most

Measured by Syke

Max depth

21.3 m

Bathymetric survey

70 ft max depth
Limited data

See the measurements Directions Where to stay

Degersjön Lake in Raasepori, Finland has official water-quality measurements, shown as reported. Water clarity: 2.5 m visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 3.5 µg/L. Maximum depth: 69.9 ft.

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How Degersjön Lake is classified

Degersjön 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.

Degersjön Lake is a lake in Raasepori County, Finland with a maximum depth of 70 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-11-03. Methodology: how these readings are compared.

What Degersjön Lake is good for

From access and monitoring records, not editorial picks.

Deep water69.9 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 Degersjön 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 Degersjön Lake

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

Moderate clarity, visible to about 8.2 ft. Phosphorus 11 µg/L. Chlorophyll-a 3.5 µg/L. TSI 43.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.5m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	11µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	3.5µg/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.	43	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Degersjön Lake

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

Lake Details

Max depth

21.3 m

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Stays near Degersjön Lake

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Fishing Degersjön Lake

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

Frequently asked questions about Degersjön Lake

Where is Degersjön Lake?: Degersjön Lake is a lake in Raasepori, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Degersjön Lake?: Degersjön Lake in Raasepori, Finland has official water-quality measurements, shown as reported. Water clarity: 2.5 m visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 3.5 µg/L. Maximum depth: 69.9 ft.
Is Degersjön Lake safe to swim in?: Degersjön 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 Degersjön Lake?: Degersjön Lake has a maximum depth of 69.9 feet.

Explore Degersjön Lake across LakeQuality

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Where this data comes from

38 measurements from 1 monitoring station, 2016–2025. 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-vesla38 samples · 2016–2025

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

2973

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