Ojajärvi
Ojajärvi in Hämeenlinna, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 370 µg/L. Maximum depth: 3 ft.
- Max depth
- 0.9 m
Why Ojajärvi has no A–F grade
Ojajärvi 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 phosphorus, but not water clarity 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.
Ojajärvi is a lake in Hämeenlinna County, Finland with a maximum depth of 3 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2022-08-25. 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 Ojajärvi
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 370 µg/L. Trophic State Index: 89.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 370 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 89 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 0.9 m |
Where to stay near Ojajärvi
Compare lakeside cabins, hotels, and vacation rentals near Ojajärvi in Hämeenlinna, 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 Ojajärvi
Frequently asked questions about Ojajärvi
What is the water quality of Ojajärvi?
- Ojajärvi in Hämeenlinna, Finland has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 370 µg/L. Maximum depth: 3 ft.
Is Ojajärvi safe to swim in?
- Ojajärvi 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 Ojajärvi?
- Ojajärvi has a maximum depth of 3 feet.
Explore Ojajärvi across LakeGrade
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Where this data comes from
1 measurement from 1 monitoring station, 2022. 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-vesla1 sample · 2022
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
1803
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: 2022-08-25
Monitoring stations: 1