Loituma Lake
Loituma Lake in Ruokolahti, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.7 m visibility. Phosphorus: 6.9 µg/L. Chlorophyll-a (algae): 3.3 µg/L. Maximum depth: 42.7 ft.
- Clarity
- 2.7 m
- Max depth
- 13 m
Why Loituma Lake has no A–F grade
Loituma Lake in Finland is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still 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: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-03-19. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Loituma Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 8.7 ft. Phosphorus level: 6.9 µg/L. Chlorophyll-a: 3.3 µg/L. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.65 m | Not graded |
| Phosphorus | 6.9 µg/L | Not graded |
| Chlorophyll-a (Algae) | 3.3 µg/L | Not graded |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 13 m |
Where to stay near Loituma Lake
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Fishing Loituma Lake
Frequently asked questions about Loituma Lake
What is the water quality of Loituma Lake?
- Loituma Lake in Ruokolahti, Finland has official water-quality measurements, not a LakeQuality A–F grade. 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.
Explore Loituma Lake across LakeGrade
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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 Centres
syke-vesla23 samples · 2016–2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
63242
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2026-03-19
Monitoring stations: 1