Nõuni Järv
Nõuni Järv in Valga, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 4.2 m visibility. Phosphorus: 22 µg/L. Chlorophyll-a (algae): 3.6 µg/L. Maximum depth: 50.5 ft. Surface area: 205.8 acres.
- Clarity
- 4.2 m
- Max depth
- 15.4 m
- Area
- 83 ha
Why Nõuni Järv has no A–F grade
Nõuni Järv 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).
Nõuni Järv is a 206-acre lake in Valga County, Estonia with a maximum depth of 51 feet.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2021-09-07. 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 Nõuni Järv
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Good clarity, visible to about 13.6 ft. Phosphorus level: 22 µg/L. Chlorophyll-a: 3.6 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.15 m | Not graded |
| Phosphorus | 22 µg/L | Not graded |
| Chlorophyll-a (Algae) | 3.6 µg/L | Not graded |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 15.4 m |
| Surface Area | 83 ha |
Where to stay near Nõuni Järv
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Fishing Nõuni Järv
Frequently asked questions about Nõuni Järv
What is the water quality of Nõuni Järv?
- Nõuni Järv in Valga, Estonia has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 4.2 m visibility. Phosphorus: 22 µg/L. Chlorophyll-a (algae): 3.6 µg/L. Maximum depth: 50.5 ft. Surface area: 205.8 acres.
Is Nõuni Järv safe to swim in?
- Nõuni Järv 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 Nõuni Järv?
- Nõuni Järv has a maximum depth of 50.5 feet. The lake covers 205.8 acres.
Explore Nõuni Järv across LakeGrade
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Where this data comes from
30 measurements from 2 monitoring stations, 2021. 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-ee30 samples · 2021
Analytical methods
- KESE I-level monitoring
Monitoring station identifiers (2)
SJA6202000SJA6202003
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: 2021-09-07
Monitoring stations: 2