Iso-Viljamoinen Lake
Iso-Viljamoinen Lake in Tampere, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 3 m visibility. Phosphorus: 7.6 µg/L. Chlorophyll-a (algae): 2 µg/L.
- Clarity
- 3 m
Why Iso-Viljamoinen Lake has no A–F grade
Iso-Viljamoinen 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 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.
Iso-Viljamoinen Lake is a lake in Tampere County, Finland.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-08-08. 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 Iso-Viljamoinen Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 9.8 ft. Phosphorus level: 7.6 µg/L. Chlorophyll-a: 2 µg/L. Trophic State Index: 38.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 m | Not graded |
| Phosphorus | 7.6 µg/L | Not graded |
| Chlorophyll-a (Algae) | 2 µg/L | Not graded |
| Trophic State Index (TSI) | 38 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Iso-Viljamoinen Lake
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Fishing Iso-Viljamoinen Lake
Frequently asked questions about Iso-Viljamoinen Lake
What is the water quality of Iso-Viljamoinen Lake?
- Iso-Viljamoinen Lake in Tampere, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 3 m visibility. Phosphorus: 7.6 µg/L. Chlorophyll-a (algae): 2 µg/L.
Is Iso-Viljamoinen Lake safe to swim in?
- Iso-Viljamoinen 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.
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Where this data comes from
12 measurements from 1 monitoring station, 2019–2024. 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 · 2019–2024
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
44272
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: 2024-08-08
Monitoring stations: 1