Revon Sonkaja Lake
Revon Sonkaja Lake in Joensuu, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 20.5 µg/L. Chlorophyll-a (algae): 23 µg/L. Maximum depth: 21.3 ft.
- Max depth
- 6.5 m
Why Revon Sonkaja Lake has no A–F grade
Revon Sonkaja 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 phosphorus and algae (chlorophyll-a), but not water clarity.
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.
Revon Sonkaja Lake is a lake in Joensuu County, Finland with a maximum depth of 21 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2017-08-15. 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 Revon Sonkaja Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 20.5 µg/L. Chlorophyll-a: 23 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 20.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 23 µg/L | Not graded |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 6.5 m |
Where to stay near Revon Sonkaja Lake
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Fishing Revon Sonkaja Lake
Frequently asked questions about Revon Sonkaja Lake
What is the water quality of Revon Sonkaja Lake?
- Revon Sonkaja Lake in Joensuu, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 20.5 µg/L. Chlorophyll-a (algae): 23 µg/L. Maximum depth: 21.3 ft.
Is Revon Sonkaja Lake safe to swim in?
- Revon Sonkaja 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 Revon Sonkaja Lake?
- Revon Sonkaja Lake has a maximum depth of 21.3 feet.
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Where this data comes from
3 measurements from 1 monitoring station, 2017. 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-vesla3 samples · 2017
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
21792
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: 2017-08-15
Monitoring stations: 1