Alasenjärvi
Lahti, FinlandView mapDirections
Syke publishes the water-quality measurements for Alasenjärvi. Here is what has been measured.
- 49 ft max depth
- Limited data
Alasenjärvi in Lahti, Finland has official water-quality measurements, shown as reported. Water clarity: 3 m visibility. Phosphorus: 11.5 µg/L. Chlorophyll-a (algae): 4.9 µg/L. Maximum depth: 49.2 ft.
How Alasenjärvi is classified
Alasenjärvi 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.
Alasenjärvi is a lake in Lahti County, Finland with a maximum depth of 49 feet.
Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-08-26. Methodology: how these readings are compared.
What Alasenjärvi is good for
From access and monitoring records, not editorial picks.
- Clear water9.8 ft of visibility
- Deep water49.2 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 Alasenjärvi 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 Alasenjärvi
These are the measurements Syke publishes for Alasenjärvi. More on the source.
Moderate clarity, visible to about 9.8 ft. Phosphorus 11.5 µg/L. Chlorophyll-a 4.9 µg/L. TSI 43.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 11.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 4.9µg/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. | 43 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Alasenjärvi
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
15 m
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Frequently asked questions about Alasenjärvi
Where is Alasenjärvi?
- Alasenjärvi is a lake in Lahti, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Alasenjärvi?
- Alasenjärvi in Lahti, Finland has official water-quality measurements, shown as reported. Water clarity: 3 m visibility. Phosphorus: 11.5 µg/L. Chlorophyll-a (algae): 4.9 µg/L. Maximum depth: 49.2 ft.
Is Alasenjärvi safe to swim in?
- Alasenjärvi 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 Alasenjärvi?
- Alasenjärvi has a maximum depth of 49.2 feet.
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Where this data comes from
55 measurements from 1 monitoring station, 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-vesla55 samples · 2016–2025
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
49489
Authority classifications are shown as the authority published them. See where the data comes from and data sources.