Tohmajärvi
Tohmajärvi, FinlandView mapDirections
Syke publishes the water-quality measurements for Tohmajärvi. Here is what has been measured.
- 47 ft max depth
- Limited data
Tohmajärvi in Tohmajärvi, Finland has official water-quality measurements, shown as reported. Water clarity: 1.2 m visibility. Phosphorus: 23 µg/L. Chlorophyll-a (algae): 13 µg/L. Maximum depth: 47.2 ft.
How Tohmajärvi is classified
Tohmajärvi 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.
Tohmajärvi is a lake in Tohmajärvi County, Finland with a maximum depth of 47 feet.
Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-08-18. Methodology: how these readings are compared.
What Tohmajärvi is good for
From access and monitoring records, not editorial picks.
- Deep water47.2 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 Tohmajärvi 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 Tohmajärvi
These are the measurements Syke publishes for Tohmajärvi. More on the source.
Murky, only visible to about 3.9 ft. Phosphorus 23 µg/L. Chlorophyll-a 13 µg/L. TSI 54.
| 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 | 23µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 13µg/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. | 54 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Tohmajärvi
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
14.4 m
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Fishing Tohmajärvi
Frequently asked questions about Tohmajärvi
Where is Tohmajärvi?
- Tohmajärvi is a lake in Tohmajärvi, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Tohmajärvi?
- Tohmajärvi in Tohmajärvi, Finland has official water-quality measurements, shown as reported. Water clarity: 1.2 m visibility. Phosphorus: 23 µg/L. Chlorophyll-a (algae): 13 µg/L. Maximum depth: 47.2 ft.
Is Tohmajärvi safe to swim in?
- Tohmajärvi 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 Tohmajärvi?
- Tohmajärvi has a maximum depth of 47.2 feet.
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Where this data comes from
144 measurements from 4 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-vesla144 samples · 2016–2025
Analytical methods
- SYKE VESLA
Monitoring station identifiers (4)
21968219642196521966
Authority classifications are shown as the authority published them. See where the data comes from and data sources.