Where is Velenjsko Jezero?

Velenjsko Jezero is a lake in Slovenia. This page reports official water-quality measurements, shown as reported.

Is Velenjsko Jezero safe to swim in?

Velenjsko Jezero 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.

Velenjsko Jezero

SloveniaView map Directions

ARSO publishes the water-quality measurements for Velenjsko Jezero. Here is what has been measured.

Clarity

8.3 m

Secchi · sampled 2022

Phosphorus

53 µg/L

Measured by ARSO

Limited data

See the measurements Directions Where to stay

Velenjsko Jezero in Slovenia has official water-quality measurements, shown as reported. Water clarity: 8.3 m visibility. Phosphorus: 53 µg/L.

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How Velenjsko Jezero is classified

Velenjsko Jezero in Slovenia 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 and phosphorus, but not algae (chlorophyll-a).

LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.

Monitoring: the Slovenian Environment Agency (ARSO), via UNEP GEMS/Water.

Velenjsko Jezero is a lake in Unknown County, Slovenia.

Source: the Slovenian Environment Agency (ARSO), via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2022-11-14. Methodology: how these readings are compared.

What Velenjsko Jezero is good for

From access and monitoring records, not editorial picks.

Clear water27.2 ft of visibility

Swimming conditions

No reading

Limited data

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

Whether Velenjsko Jezero is safe to swim in today is a call for the Slovenian Environment Agency (ARSO), via UNEP GEMS/Water and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Velenjsko Jezero

These are the measurements ARSO publishes for Velenjsko Jezero. More on the source.

Crystal clear, you can see 27.2 ft down. Phosphorus 53 µg/L. TSI 45.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	8.3m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	53µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)		No reading 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 Velenjsko Jezero

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

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Stays near Velenjsko Jezero

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Fishing Velenjsko Jezero

→ Velenjsko Jezero fishing regulations (limits, seasons, special rules)

Frequently asked questions about Velenjsko Jezero

Where is Velenjsko Jezero?: Velenjsko Jezero is a lake in Slovenia. This page reports official water-quality measurements, shown as reported.
What is the water quality of Velenjsko Jezero?: Velenjsko Jezero in Slovenia has official water-quality measurements, shown as reported. Water clarity: 8.3 m visibility. Phosphorus: 53 µg/L.
Is Velenjsko Jezero safe to swim in?: Velenjsko Jezero 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.

Explore Velenjsko Jezero across LakeQuality

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Species activity outlook by water temperature and season

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Where this data comes from

8 measurements from 1 monitoring station, 2022. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

European Environment Agencyeuropeanenvironmentagenc8 samples · —

Analytical methods

GEMStat OPEN / CC BY 4.0

Monitoring station identifiers (1)

SVN00010

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