Pielinen Lake
Pielinen Lake in Lieksa, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.7 m visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 6 µg/L. Maximum depth: 195.2 ft.
- Clarity
- 1.7 m
- Max depth
- 59.5 m
Why Pielinen Lake has no A–F grade
Pielinen 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.
Pielinen Lake is a lake in Lieksa County, Finland with a maximum depth of 195 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-07-29. 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 Pielinen Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 5.6 ft. Phosphorus level: 11 µg/L. Chlorophyll-a: 6 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.7 m | Not graded |
| Phosphorus | 11 µg/L | Not graded |
| Chlorophyll-a (Algae) | 6 µg/L | Not graded |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 59.5 m |
Where to stay near Pielinen Lake
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Fishing Pielinen Lake
Frequently asked questions about Pielinen Lake
What is the water quality of Pielinen Lake?
- Pielinen Lake in Lieksa, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.7 m visibility. Phosphorus: 11 µg/L. Chlorophyll-a (algae): 6 µg/L. Maximum depth: 195.2 ft.
Is Pielinen Lake safe to swim in?
- Pielinen 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 Pielinen Lake?
- Pielinen Lake has a maximum depth of 195.2 feet.
Explore Pielinen Lake across LakeGrade
More lakes in Finland
Where this data comes from
1,288 measurements from 34 monitoring stations, 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-vesla1,288 samples · 2016–2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (34)
54720547212313223207232222317823103230262313623142231315351623114629302321423213230142310523108231102311823119231212320623212- +9 more
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: 2026-07-29
Monitoring stations: 34