Where is Ūdrijos Ežeras?

Ūdrijos Ežeras is a lake in Alytaus, Lithuania. This page reports official water-quality measurements, shown as reported.

Is Ūdrijos Ežeras safe to swim in?

Ūdrijos Ežeras 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.

Ūdrijos Ežeras

Alytaus, LithuaniaView map Directions

AAA publishes the water-quality measurements for Ūdrijos Ežeras. Here is what has been measured.

Clarity

0.5 m

Murkier than most

Secchi · sampled 2020

Phosphorus

145 µg/L

More phosphorus than most

Measured by AAA

Chlorophyll-a

63.2 µg/L

More algae than most

Measured by AAA

Limited data

See the measurements Directions Where to stay

Ūdrijos Ežeras in Alytaus, Lithuania has official water-quality measurements, shown as reported. Water clarity: 0.5 m visibility. Phosphorus: 145 µg/L. Chlorophyll-a (algae): 63.2 µg/L.

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How Ūdrijos Ežeras is classified

Ūdrijos Ežeras in Lithuania 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 Environmental Protection Agency of Lithuania (Aplinkos apsaugos agentūra).

Ūdrijos Ežeras is a lake in Alytaus County, Lithuania.

Source: the Environmental Protection Agency of Lithuania (Aplinkos apsaugos agentūra) — not the EPA Water Quality Portal, last sampled 2020-09-15. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

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

Whether Ūdrijos Ežeras is safe to swim in today is a call for the Environmental Protection Agency of Lithuania (Aplinkos apsaugos agentūra) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Ūdrijos Ežeras

These are the measurements AAA publishes for Ūdrijos Ežeras. More on the source.

Very murky, less than 1.6 ft of visibility. Phosphorus 145 µg/L. Chlorophyll-a 63.2 µg/L. TSI 72.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.5m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	145µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	63.2µg/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.	72	Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic

Very high nutrients, dense algae, poor clarity

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

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Fishing Ūdrijos Ežeras

→ Ūdrijos Ežeras fishing regulations (limits, seasons, special rules)

Frequently asked questions about Ūdrijos Ežeras

Where is Ūdrijos Ežeras?: Ūdrijos Ežeras is a lake in Alytaus, Lithuania. This page reports official water-quality measurements, shown as reported.
What is the water quality of Ūdrijos Ežeras?: Ūdrijos Ežeras in Alytaus, Lithuania has official water-quality measurements, shown as reported. Water clarity: 0.5 m visibility. Phosphorus: 145 µg/L. Chlorophyll-a (algae): 63.2 µg/L.
Is Ūdrijos Ežeras safe to swim in?: Ūdrijos Ežeras 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.

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Where this data comes from

24 measurements from 1 monitoring station, 2017–2020. Retrieved from Lithuanian lake state monitoring (AAA; not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

Environmental Protection Agency of Lithuania (Aplinkos apsaugos agentūra)aaa-lt24 samples · 2017–2020

Analytical methods

AAA lake state monitoring

Monitoring station identifiers (1)

LTL511

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