Jalasjärvi
Jalasjärvi in Savonlinna, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.4 m visibility. Phosphorus: 16.5 µg/L. Maximum depth: 11.5 ft.
- Clarity
- 1.4 m
- Max depth
- 3.5 m
Why Jalasjärvi has no A–F grade
Jalasjärvi 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 and phosphorus, but not 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.
Jalasjärvi is a lake in Savonlinna County, Finland with a maximum depth of 12 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-09-29. 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 Jalasjärvi
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 4.6 ft. Phosphorus level: 16.5 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.4 m | Not graded |
| Phosphorus | 16.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 3.5 m |
Where to stay near Jalasjärvi
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Fishing Jalasjärvi
Frequently asked questions about Jalasjärvi
What is the water quality of Jalasjärvi?
- Jalasjärvi in Savonlinna, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.4 m visibility. Phosphorus: 16.5 µg/L. Maximum depth: 11.5 ft.
Is Jalasjärvi safe to swim in?
- Jalasjärvi 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 Jalasjärvi?
- Jalasjärvi has a maximum depth of 11.5 feet.
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Where this data comes from
12 measurements from 1 monitoring station, 2018–2025. 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-vesla12 samples · 2018–2025
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
14086
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: 2025-09-29
Monitoring stations: 1