Vallonjärvi
Vallonjärvi in Valkeakoski, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 52 µg/L. Maximum depth: 1 ft.
- Max depth
- 0.3 m
Why Vallonjärvi has no A–F grade
Vallonjärvi 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.
Vallonjärvi is a lake in Valkeakoski County, Finland with a maximum depth of 1 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-08-14. Grade methodology: LakeGrade methodology.
Watch Vallonjärvi water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Vallonjärvi
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 52 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 52 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 0.3 m |
Where to stay near Vallonjärvi
Compare lakeside cabins, hotels, and vacation rentals near Vallonjärvi in Valkeakoski, 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.
Top-rated places to stay near Vallonjärvi
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Vallonjärvi
Frequently asked questions about Vallonjärvi
What is the water quality of Vallonjärvi?
- Vallonjärvi in Valkeakoski, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 52 µg/L. Maximum depth: 1 ft.
Is Vallonjärvi safe to swim in?
- Vallonjärvi 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 Vallonjärvi?
- Vallonjärvi has a maximum depth of 1 feet.
Explore Vallonjärvi across LakeGrade
More lakes in Finland
Where this data comes from
9 measurements from 1 monitoring station, 2017–2025. 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-vesla9 samples · 2017–2025
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
7766
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: 2025-08-14
Monitoring stations: 1