Where is Loituma Lake?

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

Is Loituma Lake safe to swim in?

Loituma 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 Loituma Lake?

Loituma Lake has a maximum depth of 42.7 feet.

Loituma Lake

Ruokolahti, FinlandView map Directions

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

Clarity

2.7 m

Clearer than most

Secchi · sampled 2026

Phosphorus

6.9 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

3.3 µg/L

Less algae than most

Measured by Syke

Max depth

13 m

Bathymetric survey

43 ft max depth
Limited data

See the measurements Directions Where to stay

Loituma Lake in Ruokolahti, Finland has official water-quality measurements, shown as reported. Water clarity: 2.7 m visibility. Phosphorus: 6.9 µg/L. Chlorophyll-a (algae): 3.3 µg/L. Maximum depth: 42.7 ft.

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How Loituma Lake is classified

Loituma 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.

Loituma Lake is a lake in Ruokolahti County, Finland with a maximum depth of 43 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2026-03-19. Methodology: how these readings are compared.

What Loituma Lake is good for

From access and monitoring records, not editorial picks.

Deep water42.7 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 Loituma 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 Loituma Lake

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

Moderate clarity, visible to about 8.7 ft. Phosphorus 6.9 µg/L. Chlorophyll-a 3.3 µg/L. TSI 40.

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	6.9µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	3.3µg/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.	40	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Loituma Lake

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

Lake Details

Max depth

13 m

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Stays near Loituma Lake

Compare lakeside cabins, hotels, and vacation rentals near Loituma Lake in Ruokolahti, Finland — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Loituma Lake

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

Frequently asked questions about Loituma Lake

Where is Loituma Lake?: Loituma Lake is a lake in Ruokolahti, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Loituma Lake?: Loituma Lake in Ruokolahti, Finland has official water-quality measurements, shown as reported. Water clarity: 2.7 m visibility. Phosphorus: 6.9 µg/L. Chlorophyll-a (algae): 3.3 µg/L. Maximum depth: 42.7 ft.
Is Loituma Lake safe to swim in?: Loituma 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 Loituma Lake?: Loituma Lake has a maximum depth of 42.7 feet.

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Where this data comes from

23 measurements from 1 monitoring station, 2016–2026. 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-vesla23 samples · 2016–2026

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

63242

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