Jämäsjärvi
Jämäsjärvi in Kuhmo, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 34 µg/L. Maximum depth: 6.2 ft.
- Max depth
- 1.9 m
Why Jämäsjärvi has no A–F grade
Jämäsjärvi 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, but not water clarity 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.
Jämäsjärvi is a lake in Kuhmo County, Finland with a maximum depth of 6 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-09-17. 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 Jämäsjärvi
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 34 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 34 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 1.9 m |
Where to stay near Jämäsjärvi
Compare lakeside cabins, hotels, and vacation rentals near Jämäsjärvi in Kuhmo, 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 Jämäsjärvi
Frequently asked questions about Jämäsjärvi
What is the water quality of Jämäsjärvi?
- Jämäsjärvi in Kuhmo, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 34 µg/L. Maximum depth: 6.2 ft.
Is Jämäsjärvi safe to swim in?
- Jämäsjärvi 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 Jämäsjärvi?
- Jämäsjärvi has a maximum depth of 6.2 feet.
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Where this data comes from
11 measurements from 1 monitoring station, 2016–2025. 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-vesla11 samples · 2016–2025
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
35501
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: 2025-09-17
Monitoring stations: 1