Where is Horsmajärvi Åsensjö?

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

Is Horsmajärvi Åsensjö safe to swim in?

Horsmajärvi Åsensjö 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 Horsmajärvi Åsensjö?

Horsmajärvi Åsensjö has a maximum depth of 60.4 feet.

Horsmajärvi Åsensjö

Raasepori, FinlandView map Directions

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

Clarity

3.9 m

Clearer than most

Secchi · sampled 2021

Phosphorus

3.2 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

2 µg/L

Less algae than most

Measured by Syke

Max depth

18.4 m

Bathymetric survey

60 ft max depth
Limited data

See the measurements Directions Where to stay

Horsmajärvi Åsensjö in Raasepori, Finland has official water-quality measurements, shown as reported. Water clarity: 3.9 m visibility. Phosphorus: 3.2 µg/L. Chlorophyll-a (algae): 2 µg/L. Maximum depth: 60.4 ft.

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How Horsmajärvi Åsensjö is classified

Horsmajärvi Åsensjö 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.

Horsmajärvi Åsensjö is a lake in Raasepori County, Finland with a maximum depth of 60 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2021-09-02. Methodology: how these readings are compared.

What Horsmajärvi Åsensjö is good for

From access and monitoring records, not editorial picks.

Clear water12.8 ft of visibility
Deep water60.4 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 Horsmajärvi Åsensjö 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 Horsmajärvi Åsensjö

These are the measurements Syke publishes for Horsmajärvi Åsensjö. More on the source.

Good clarity, visible to about 12.8 ft. Phosphorus 3.2 µg/L. Chlorophyll-a 2 µg/L. TSI 33.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	3.9m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	3.2µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	2µg/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.	33	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Low nutrients, clear water. No reading is a swimming clearance.

Ask about Horsmajärvi Åsensjö

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

Lake Details

Max depth

18.4 m

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Stays near Horsmajärvi Åsensjö

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Fishing Horsmajärvi Åsensjö

→ Horsmajärvi Åsensjö fishing regulations (limits, seasons, special rules)

Frequently asked questions about Horsmajärvi Åsensjö

Where is Horsmajärvi Åsensjö?: Horsmajärvi Åsensjö is a lake in Raasepori, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Horsmajärvi Åsensjö?: Horsmajärvi Åsensjö in Raasepori, Finland has official water-quality measurements, shown as reported. Water clarity: 3.9 m visibility. Phosphorus: 3.2 µg/L. Chlorophyll-a (algae): 2 µg/L. Maximum depth: 60.4 ft.
Is Horsmajärvi Åsensjö safe to swim in?: Horsmajärvi Åsensjö 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 Horsmajärvi Åsensjö?: Horsmajärvi Åsensjö has a maximum depth of 60.4 feet.

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Where this data comes from

10 measurements from 1 monitoring station, 2018–2021. 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-vesla10 samples · 2018–2021

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

2984

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