Iso Juuvanjärvi
Iso Juuvanjärvi in Oulu, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 16 µg/L. Maximum depth: 6.6 ft.
- Max depth
- 2 m
Why Iso Juuvanjärvi has no A–F grade
Iso Juuvanjärvi 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.
Iso Juuvanjärvi is a lake in Oulu County, Finland with a maximum depth of 7 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-05-21. 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 Juuvanjärvi
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 16 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 16 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 2 m |
Where to stay near Iso Juuvanjärvi
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Fishing Iso Juuvanjärvi
Frequently asked questions about Iso Juuvanjärvi
What is the water quality of Iso Juuvanjärvi?
- Iso Juuvanjärvi in Oulu, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 16 µg/L. Maximum depth: 6.6 ft.
Is Iso Juuvanjärvi safe to swim in?
- Iso Juuvanjärvi 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 Iso Juuvanjärvi?
- Iso Juuvanjärvi has a maximum depth of 6.6 feet.
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Where this data comes from
1 measurement from 1 monitoring station, 2026. 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-vesla1 sample · 2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
50626
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: 2026-05-21
Monitoring stations: 1