Where is Lielais Gusena Ezers?

Lielais Gusena Ezers is a lake in Latvia. This page reports official water-quality measurements, shown as reported.

Is Lielais Gusena Ezers safe to swim in?

Lielais Gusena Ezers 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.

Lielais Gusena Ezers

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LEGMC publishes the water-quality measurements for Lielais Gusena Ezers. Here is what has been measured.

Clarity

3 m

Clearer than most

Secchi · sampled 2022

Phosphorus

21.5 µg/L

Typical for Latvia

Measured by LEGMC

Chlorophyll-a

5.3 µg/L

Typical for Latvia

Measured by LEGMC

Limited data

See the measurements Directions Where to stay

Lielais Gusena Ezers in Latvia has official water-quality measurements, shown as reported. Water clarity: 3 m visibility. Phosphorus: 21.5 µg/L. Chlorophyll-a (algae): 5.3 µg/L.

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How Lielais Gusena Ezers is classified

Lielais Gusena Ezers in Latvia 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 Latvian Environment, Geology and Meteorology Centre, via UNEP GEMS/Water.

Lielais Gusena Ezers is a lake in Unknown County, Latvia.

Source: the Latvian Environment, Geology and Meteorology Centre, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2022-10-17. Methodology: how these readings are compared.

What Lielais Gusena Ezers is good for

From access and monitoring records, not editorial picks.

Clear water9.8 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 Lielais Gusena Ezers is safe to swim in today is a call for the Latvian Environment, Geology and Meteorology Centre, 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 Lielais Gusena Ezers

These are the measurements LEGMC publishes for Lielais Gusena Ezers. More on the source.

Moderate clarity, visible to about 9.8 ft. Phosphorus 21.5 µg/L. Chlorophyll-a 5.3 µg/L. TSI 47.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	3m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	21.5µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	5.3µg/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.	47	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Lielais Gusena Ezers

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

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Fishing Lielais Gusena Ezers

→ Lielais Gusena Ezers fishing regulations (limits, seasons, special rules)

Frequently asked questions about Lielais Gusena Ezers

Where is Lielais Gusena Ezers?: Lielais Gusena Ezers is a lake in Latvia. This page reports official water-quality measurements, shown as reported.
What is the water quality of Lielais Gusena Ezers?: Lielais Gusena Ezers in Latvia has official water-quality measurements, shown as reported. Water clarity: 3 m visibility. Phosphorus: 21.5 µg/L. Chlorophyll-a (algae): 5.3 µg/L.
Is Lielais Gusena Ezers safe to swim in?: Lielais Gusena Ezers 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

33 measurements from 1 monitoring station, 2020–2022. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

European Environment Agencyeuropeanenvironmentagenc33 samples · —

Analytical methods

GEMStat OPEN / CC BY 4.0

Monitoring station identifiers (1)

LVA00110

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