Seitenjärvi
Seitenjärvi in Hyrynsalmi, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.7 m visibility. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 6 µg/L. Maximum depth: 88.6 ft.
- Clarity
- 1.7 m
- Max depth
- 27 m
Why Seitenjärvi has no A–F grade
Seitenjärvi 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.
Seitenjärvi is a lake in Hyrynsalmi County, Finland with a maximum depth of 89 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-08-13. Grade methodology: LakeGrade methodology.
Watch Seitenjärvi 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 Seitenjärvi
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 5.6 ft. Phosphorus level: 13 µg/L. Chlorophyll-a: 6 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.7 m | Not graded |
| Phosphorus | 13 µg/L | Not graded |
| Chlorophyll-a (Algae) | 6 µg/L | Not graded |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 27 m |
Where to stay near Seitenjärvi
Compare lakeside cabins, hotels, and vacation rentals near Seitenjärvi in Hyrynsalmi, 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 Seitenjärvi
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Seitenjärvi
Frequently asked questions about Seitenjärvi
What is the water quality of Seitenjärvi?
- Seitenjärvi in Hyrynsalmi, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.7 m visibility. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 6 µg/L. Maximum depth: 88.6 ft.
Is Seitenjärvi safe to swim in?
- Seitenjärvi 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 Seitenjärvi?
- Seitenjärvi has a maximum depth of 88.6 feet.
Explore Seitenjärvi across LakeGrade
More lakes in Finland
Where this data comes from
95 measurements from 2 monitoring stations, 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-vesla95 samples · 2016–2025
Analytical methods
- SYKE VESLA
Monitoring station identifiers (2)
3214252655
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: 2025-08-13
Monitoring stations: 2