Võrtsjärv
Võrtsjärv in Tartu, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.7 m visibility. Phosphorus: 43 µg/L. Chlorophyll-a (algae): 30.4 µg/L. Maximum depth: 19.7 ft. Surface area: 66610.1 acres.
- Clarity
- 0.7 m
- Max depth
- 6 m
- Area
- 270 km²
Why Võrtsjärv has no A–F grade
Võrtsjärv in Estonia 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 Estonian Environment Agency (Keskkonnaagentuur).
Võrtsjärv is a 66,610-acre lake in Tartu County, Estonia with a maximum depth of 20 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-12-11. 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 Võrtsjärv
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 2.2 ft of visibility. Phosphorus level: 43 µg/L. Chlorophyll-a: 30.4 µg/L. Trophic State Index: 63.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.68 m | Not graded |
| Phosphorus | 43 µg/L | Not graded |
| Chlorophyll-a (Algae) | 30.4 µg/L | Not graded |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 6 m |
| Surface Area | 270 km² |
Where to stay near Võrtsjärv
Compare lakeside cabins, hotels, and vacation rentals near Võrtsjärv in Tartu, Estonia — 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 Võrtsjärv
Frequently asked questions about Võrtsjärv
What is the water quality of Võrtsjärv?
- Võrtsjärv in Tartu, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.7 m visibility. Phosphorus: 43 µg/L. Chlorophyll-a (algae): 30.4 µg/L. Maximum depth: 19.7 ft. Surface area: 66610.1 acres.
Is Võrtsjärv safe to swim in?
- Võrtsjärv 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 Võrtsjärv?
- Võrtsjärv has a maximum depth of 19.7 feet. The lake covers 66610.1 acres.
Explore Võrtsjärv across LakeGrade
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Where this data comes from
484 measurements from 10 monitoring stations, 2016–2025. Retrieved from KESE / Estonian Environment Agency (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Estonian Environment Agency (Keskkonnaagentuur)
kese-ee484 samples · 2016–2025
Analytical methods
- KESE I-level monitoring
Monitoring station identifiers (10)
SJB1548000SJB1547000SJB1557000SJB1563000SJB1550000SJB1560000SJB1564000SJB1561000SJB1558000SJB1555000
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: 2025-12-11
Monitoring stations: 10