Honka-Jälä Lake
Honka-Jälä Lake in Siilinjärvi, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.1 m visibility. Maximum depth: 42.7 ft.
- Clarity
- 2.1 m
- Max depth
- 13 m
Why Honka-Jälä Lake has no A–F grade
Honka-Jälä 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, but not 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.
Honka-Jälä Lake is a lake in Siilinjärvi County, Finland with a maximum depth of 43 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-10-21. 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 Honka-Jälä Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 6.9 ft. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.1 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 13 m |
Where to stay near Honka-Jälä Lake
Compare lakeside cabins, hotels, and vacation rentals near Honka-Jälä Lake in Siilinjärvi, 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 Honka-Jälä Lake
Frequently asked questions about Honka-Jälä Lake
What is the water quality of Honka-Jälä Lake?
- Honka-Jälä Lake in Siilinjärvi, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.1 m visibility. Maximum depth: 42.7 ft.
Is Honka-Jälä Lake safe to swim in?
- Honka-Jälä 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 Honka-Jälä Lake?
- Honka-Jälä Lake has a maximum depth of 42.7 feet.
Explore Honka-Jälä Lake across LakeGrade
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Where this data comes from
19 measurements from 1 monitoring station, 2017–2025. 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-vesla19 samples · 2017–2025
Analytical methods
- SYKE VESLA
Monitoring station identifiers (1)
18651
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: 2025-10-21
Monitoring stations: 1