Pieni Pyhävesi
Pieni Pyhävesi in Mäntyharju, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.9 m visibility. Phosphorus: 9.5 µg/L. Chlorophyll-a (algae): 4.5 µg/L. Maximum depth: 36.1 ft.
- Clarity
- 1.9 m
- Max depth
- 11 m
Why Pieni Pyhävesi has no A–F grade
Pieni Pyhävesi 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.
Pieni Pyhävesi is a lake in Mäntyharju County, Finland with a maximum depth of 36 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-06-15. 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 Pieni Pyhävesi
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 6.2 ft. Phosphorus level: 9.5 µg/L. Chlorophyll-a: 4.5 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.9 m | Not graded |
| Phosphorus | 9.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 4.5 µg/L | Not graded |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 11 m |
Where to stay near Pieni Pyhävesi
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Fishing Pieni Pyhävesi
Frequently asked questions about Pieni Pyhävesi
What is the water quality of Pieni Pyhävesi?
- Pieni Pyhävesi in Mäntyharju, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.9 m visibility. Phosphorus: 9.5 µg/L. Chlorophyll-a (algae): 4.5 µg/L. Maximum depth: 36.1 ft.
Is Pieni Pyhävesi safe to swim in?
- Pieni Pyhävesi 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 Pieni Pyhävesi?
- Pieni Pyhävesi has a maximum depth of 36.1 feet.
Explore Pieni Pyhävesi across LakeGrade
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Where this data comes from
37 measurements from 3 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-vesla37 samples · 2016–2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (3)
156546973469735
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: 2026-06-15
Monitoring stations: 3