Gennarbyviken Lake
Gennarbyviken Lake in Raasepori, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.3 m visibility. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 5.3 µg/L. Maximum depth: 111.5 ft.
- Clarity
- 2.3 m
- Max depth
- 34 m
Why Gennarbyviken Lake has no A–F grade
Gennarbyviken 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.
Gennarbyviken Lake is a lake in Raasepori County, Finland with a maximum depth of 112 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-04-14. 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 Gennarbyviken Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 7.5 ft. Phosphorus level: 16 µg/L. Chlorophyll-a: 5.3 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 m | Not graded |
| Phosphorus | 16 µg/L | Not graded |
| Chlorophyll-a (Algae) | 5.3 µg/L | Not graded |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 34 m |
Where to stay near Gennarbyviken Lake
Compare lakeside cabins, hotels, and vacation rentals near Gennarbyviken Lake in Raasepori, 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.
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Fishing Gennarbyviken Lake
Frequently asked questions about Gennarbyviken Lake
What is the water quality of Gennarbyviken Lake?
- Gennarbyviken Lake in Raasepori, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.3 m visibility. Phosphorus: 16 µg/L. Chlorophyll-a (algae): 5.3 µg/L. Maximum depth: 111.5 ft.
Is Gennarbyviken Lake safe to swim in?
- Gennarbyviken 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 Gennarbyviken Lake?
- Gennarbyviken Lake has a maximum depth of 111.5 feet.
Explore Gennarbyviken Lake across LakeGrade
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Where this data comes from
195 measurements from 7 monitoring stations, 2016–2026. 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-vesla195 samples · 2016–2026
Analytical methods
- SYKE VESLA
Monitoring station identifiers (7)
3011300930133018574708928390116
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: 2026-04-14
Monitoring stations: 7