Suurjärv is a lake in Võru, Estonia. This page reports official water-quality measurements, shown as reported.

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.

Suurjärv

Võru, Estonia15 haView map Directions

KAUR publishes the water-quality measurements for Suurjärv. Here is what has been measured.

Clarity

2.9 m

Clearer than most

Secchi · sampled 2025

Phosphorus

20 µg/L

Less phosphorus than most

Measured by KAUR

Chlorophyll-a

3.4 µg/L

Less algae than most

Measured by KAUR

Max depth

38 m

Bathymetric survey

Area

15 ha

Surface area

125 ft max depth
Limited data

See the measurements Directions Where to stay

Suurjärv in Võru, Estonia has official water-quality measurements, shown as reported. 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.

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How Suurjärv is classified

Suurjärv in Estonia is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).

LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is 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: the Estonian Environment Agency (Keskkonnaagentuur) — not the EPA Water Quality Portal, last sampled 2025-09-08. Methodology: how these readings are compared.

What Suurjärv is good for

From access and monitoring records, not editorial picks.

Deep water124.7 ft surveyed max depth

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Suurjärv is safe to swim in today is a call for the Estonian Environment Agency (Keskkonnaagentuur) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Suurjärv

These are the measurements KAUR publishes for Suurjärv. More on the source.

Moderate clarity, visible to about 9.5 ft. Phosphorus 20 µg/L. Chlorophyll-a 3.4 µg/L. TSI 45.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.9m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	20µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	3.4µg/L	Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water.
Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.	45	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Suurjärv

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

38 m

Surface area

15 ha

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Stays near Suurjärv

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Fishing Suurjärv

→ Suurjärv fishing regulations (limits, seasons, special rules)

Frequently asked questions about Suurjärv

Where is Suurjärv?: Suurjärv is a lake in Võru, Estonia. This page reports official water-quality measurements, shown as reported.
What is the water quality of Suurjärv?: Suurjärv in Võru, Estonia has official water-quality measurements, shown as reported. 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.

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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)

SJA6793000
SJA6793003

Authority classifications are shown as the authority published them. See where the data comes from and data sources.