Ala-Uonua Lake
Vaala, FinlandView mapDirections
Syke publishes the water-quality measurements for Ala-Uonua Lake. Here is what has been measured.
- 7 ft max depth
- Limited data
Ala-Uonua Lake in Vaala, Finland has official water-quality measurements, shown as reported. Water clarity: 1 m visibility. Phosphorus: 29.5 µg/L. Chlorophyll-a (algae): 16 µg/L. Maximum depth: 6.6 ft.
How Ala-Uonua Lake is classified
Ala-Uonua Lake 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.
Ala-Uonua Lake is a lake in Vaala County, Finland with a maximum depth of 7 feet.
Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2023-09-28. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Ala-Uonua Lake 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 Ala-Uonua Lake
These are the measurements Syke publishes for Ala-Uonua Lake. More on the source.
Very murky, less than 3.3 ft of visibility. Phosphorus 29.5 µg/L. Chlorophyll-a 16 µg/L. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 29.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 16µg/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. | 57 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Ala-Uonua Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
2 m
Stays via Stay22
Stays near Ala-Uonua Lake
Compare lakeside cabins, hotels, and vacation rentals near Ala-Uonua Lake in Vaala, 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 Ala-Uonua Lake
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 Ala-Uonua Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Ala-Uonua Lake
Frequently asked questions about Ala-Uonua Lake
Where is Ala-Uonua Lake?
- Ala-Uonua Lake is a lake in Vaala, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Ala-Uonua Lake?
- Ala-Uonua Lake in Vaala, Finland has official water-quality measurements, shown as reported. Water clarity: 1 m visibility. Phosphorus: 29.5 µg/L. Chlorophyll-a (algae): 16 µg/L. Maximum depth: 6.6 ft.
Is Ala-Uonua Lake safe to swim in?
- Ala-Uonua Lake 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 Ala-Uonua Lake?
- Ala-Uonua Lake has a maximum depth of 6.6 feet.
Explore Ala-Uonua Lake across LakeQuality
More lakes in Finland
Where this data comes from
11 measurements from 1 monitoring station, 2023. 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-vesla11 samples · 2023
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
31789
Authority classifications are shown as the authority published them. See where the data comes from and data sources.