Niinijärvi
Niinijärvi in Pornainen, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.4 m visibility. Phosphorus: 110 µg/L. Chlorophyll-a (algae): 89 µg/L. Maximum depth: 9.8 ft.
- Clarity
- 0.4 m
- Max depth
- 3 m
Why Niinijärvi has no A–F grade
Niinijärvi 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.
Niinijärvi is a lake in Pornainen County, Finland with a maximum depth of 10 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-08-26. 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 Niinijärvi
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 1.3 ft of visibility. Phosphorus level: 110 µg/L. Chlorophyll-a: 89 µg/L. Trophic State Index: 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.4 m | Not graded |
| Phosphorus | 110 µg/L | Not graded |
| Chlorophyll-a (Algae) | 89 µg/L | Not graded |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 3 m |
Where to stay near Niinijärvi
Compare lakeside cabins, hotels, and vacation rentals near Niinijärvi in Pornainen, 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 Niinijärvi
Frequently asked questions about Niinijärvi
What is the water quality of Niinijärvi?
- Niinijärvi in Pornainen, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.4 m visibility. Phosphorus: 110 µg/L. Chlorophyll-a (algae): 89 µg/L. Maximum depth: 9.8 ft.
Is Niinijärvi safe to swim in?
- Niinijärvi 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 Niinijärvi?
- Niinijärvi has a maximum depth of 9.8 feet.
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Where this data comes from
27 measurements from 1 monitoring station, 2017–2024. 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-vesla27 samples · 2017–2024
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
507
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: 2024-08-26
Monitoring stations: 1