Ristijärvi-Lahnajärvi
Heinola, FinlandView mapDirections
Syke publishes the water-quality measurements for Ristijärvi-Lahnajärvi. Here is what has been measured.
- 91 ft max depth
- Limited data
Ristijärvi-Lahnajärvi in Heinola, Finland has official water-quality measurements, shown as reported. Water clarity: 3.2 m visibility. Phosphorus: 6.5 µg/L. Chlorophyll-a (algae): 4 µg/L. Maximum depth: 91.2 ft.
How Ristijärvi-Lahnajärvi is classified
Ristijärvi-Lahnajärvi 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.
Ristijärvi-Lahnajärvi is a lake in Heinola County, Finland with a maximum depth of 91 feet.
Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2024-08-01. Methodology: how these readings are compared.
What Ristijärvi-Lahnajärvi is good for
From access and monitoring records, not editorial picks.
- Clear water10.5 ft of visibility
- Deep water91.2 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 Ristijärvi-Lahnajärvi 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 Ristijärvi-Lahnajärvi
These are the measurements Syke publishes for Ristijärvi-Lahnajärvi. More on the source.
Good clarity, visible to about 10.5 ft. Phosphorus 6.5 µg/L. Chlorophyll-a 4 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.2m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 6.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 4µg/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. | 39 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Ristijärvi-Lahnajärvi
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
27.8 m
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Frequently asked questions about Ristijärvi-Lahnajärvi
Where is Ristijärvi-Lahnajärvi?
- Ristijärvi-Lahnajärvi is a lake in Heinola, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Ristijärvi-Lahnajärvi?
- Ristijärvi-Lahnajärvi in Heinola, Finland has official water-quality measurements, shown as reported. Water clarity: 3.2 m visibility. Phosphorus: 6.5 µg/L. Chlorophyll-a (algae): 4 µg/L. Maximum depth: 91.2 ft.
Is Ristijärvi-Lahnajärvi safe to swim in?
- Ristijärvi-Lahnajärvi 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 Ristijärvi-Lahnajärvi?
- Ristijärvi-Lahnajärvi has a maximum depth of 91.2 feet.
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Where this data comes from
22 measurements from 2 monitoring stations, 2018–2024. 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-vesla22 samples · 2018–2024
Analytical methods
- SYKE VESLA
Monitoring station identifiers (2)
1453370753
Authority classifications are shown as the authority published them. See where the data comes from and data sources.