Säyhtee Lake
Säyhtee Lake in Orimattila, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.3 m visibility. Phosphorus: 110 µg/L. Chlorophyll-a (algae): 12.5 µg/L. Maximum depth: 39.4 ft.
- Clarity
- 0.3 m
- Max depth
- 12 m
Why Säyhtee Lake has no A–F grade
Säyhtee Lake in Finland is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the Finnish Environment Institute (Syke) and the ELY Centres.
Säyhtee Lake is a lake in Orimattila County, Finland with a maximum depth of 39 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-06-25. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Säyhtee Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 1 ft of visibility. Phosphorus level: 110 µg/L. Chlorophyll-a: 12.5 µg/L. Trophic State Index: 68.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.3 m | Not graded |
| Phosphorus | 110 µg/L | Not graded |
| Chlorophyll-a (Algae) | 12.5 µg/L | Not graded |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 12 m |
Where to stay near Säyhtee Lake
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Fishing Säyhtee Lake
Frequently asked questions about Säyhtee Lake
What is the water quality of Säyhtee Lake?
- Säyhtee Lake in Orimattila, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.3 m visibility. Phosphorus: 110 µg/L. Chlorophyll-a (algae): 12.5 µg/L. Maximum depth: 39.4 ft.
Is Säyhtee Lake safe to swim in?
- Säyhtee 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 Säyhtee Lake?
- Säyhtee Lake has a maximum depth of 39.4 feet.
Explore Säyhtee Lake across LakeGrade
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Where this data comes from
22 measurements from 1 monitoring station, 2020–2026. 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-vesla22 samples · 2020–2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
304
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2026-06-25
Monitoring stations: 1