Ähtärinjärvi
Ähtäri, FinlandView mapDirections
Syke publishes the water-quality measurements for Ähtärinjärvi. Here is what has been measured.
- 87 ft max depth
- Limited data
Ähtärinjärvi in Ähtäri, Finland has official water-quality measurements, shown as reported. Water clarity: 1.2 m visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 9.7 µg/L. Maximum depth: 86.9 ft.
How Ähtärinjärvi is classified
Ähtärinjärvi in Finland is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.
Monitoring: the Finnish Environment Institute (Syke) and the ELY Centres.
Ähtärinjärvi is a lake in Ähtäri County, Finland with a maximum depth of 87 feet.
Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2026-07-09. Methodology: how these readings are compared.
What Ähtärinjärvi is good for
From access and monitoring records, not editorial picks.
- Deep water86.9 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Ähtärinjärvi is safe to swim in today is a call for the Finnish Environment Institute (Syke) and the ELY Centres and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ähtärinjärvi
These are the measurements Syke publishes for Ähtärinjärvi. More on the source.
Murky, only visible to about 3.9 ft. Phosphorus 21 µg/L. Chlorophyll-a 9.7 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.2m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 21µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 9.7µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Ähtärinjärvi
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
26.5 m
Stays via Stay22
Stays near Ähtärinjärvi
Compare lakeside cabins, hotels, and vacation rentals near Ähtärinjärvi in Ähtäri, 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 Ähtärinjärvi
Prices for Oct 2–4, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow Ähtärinjärvi’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Ähtärinjärvi
Frequently asked questions about Ähtärinjärvi
Where is Ähtärinjärvi?
- Ähtärinjärvi is a lake in Ähtäri, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Ähtärinjärvi?
- Ähtärinjärvi in Ähtäri, Finland has official water-quality measurements, shown as reported. Water clarity: 1.2 m visibility. Phosphorus: 21 µg/L. Chlorophyll-a (algae): 9.7 µg/L. Maximum depth: 86.9 ft.
Is Ähtärinjärvi safe to swim in?
- Ähtärinjärvi 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 Ähtärinjärvi?
- Ähtärinjärvi has a maximum depth of 86.9 feet.
Explore Ähtärinjärvi across LakeQuality
More lakes in Finland
Where this data comes from
240 measurements from 4 monitoring stations, 2016–2026. 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-vesla240 samples · 2016–2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (4)
3923605718243652821
Authority classifications are shown as the authority published them. See where the data comes from and data sources.