Suurjärv
Suurjärv in Võru, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.9 m visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 3.4 µg/L. Maximum depth: 124.7 ft. Surface area: 36.3 acres.
- Clarity
- 2.9 m
- Max depth
- 38 m
- Area
- 15 ha
Why Suurjärv has no A–F grade
Suurjärv 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).
Suurjärv is a 36-acre lake in Võru County, Estonia with a maximum depth of 125 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-09-08. 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 Suurjärv
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 9.5 ft. Phosphorus level: 20 µg/L. Chlorophyll-a: 3.4 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.9 m | Not graded |
| Phosphorus | 20 µg/L | Not graded |
| Chlorophyll-a (Algae) | 3.4 µg/L | Not graded |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 38 m |
| Surface Area | 15 ha |
Where to stay near Suurjärv
Compare lakeside cabins, hotels, and vacation rentals near Suurjärv in Võru, 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 Suurjärv
Frequently asked questions about Suurjärv
What is the water quality of Suurjärv?
- Suurjärv in Võru, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.9 m visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 3.4 µg/L. Maximum depth: 124.7 ft. Surface area: 36.3 acres.
Is Suurjärv safe to swim in?
- Suurjärv 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 Suurjärv?
- Suurjärv has a maximum depth of 124.7 feet. The lake covers 36.3 acres.
Explore Suurjärv across LakeGrade
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Where this data comes from
320 measurements from 2 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-ee320 samples · 2016–2025
Analytical methods
- KESE I-level monitoring
Monitoring station identifiers (2)
SJA6793000SJA6793003
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: 2025-09-08
Monitoring stations: 2