Where is Jeziory Wielkie?

Jeziory Wielkie is a lake in LW10147, Poland. This page reports official water-quality measurements, shown as reported.

Is Jeziory Wielkie safe to swim in?

Jeziory Wielkie 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.

Jeziory Wielkie

LW10147, PolandView map Directions

GIOŚ publishes the water-quality measurements for Jeziory Wielkie. Here is what has been measured.

Clarity

0.7 m

Murkier than most

Secchi · sampled 2025

Phosphorus

160.5 µg/L

More phosphorus than most

Measured by GIOŚ

Chlorophyll-a

88.4 µg/L

More algae than most

Measured by GIOŚ

Limited data

See the measurements Directions Where to stay

Jeziory Wielkie in LW10147, Poland has official water-quality measurements, shown as reported. Water clarity: 0.7 m visibility. Phosphorus: 160.5 µg/L. Chlorophyll-a (algae): 88.4 µg/L.

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How Jeziory Wielkie is classified

Jeziory Wielkie in Poland 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 Chief Inspectorate of Environmental Protection (Główny Inspektorat Ochrony Środowiska).

Jeziory Wielkie is a lake in LW10147 County, Poland.

Source: the Chief Inspectorate of Environmental Protection (Główny Inspektorat Ochrony Środowiska) — not the EPA Water Quality Portal, last sampled 2025-10-09. 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 Jeziory Wielkie is safe to swim in today is a call for the Chief Inspectorate of Environmental Protection (Główny Inspektorat Ochrony Środowiska) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Jeziory Wielkie

These are the measurements GIOŚ publishes for Jeziory Wielkie. More on the source.

Very murky, less than 2.1 ft of visibility. Phosphorus 160.5 µg/L. Chlorophyll-a 88.4 µg/L. TSI 73.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.65m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	161µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	88.4µg/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.	73	Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic

Very high nutrients, dense algae, poor clarity

Ask about Jeziory Wielkie

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

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Fishing Jeziory Wielkie

→ Jeziory Wielkie fishing regulations (limits, seasons, special rules)

Frequently asked questions about Jeziory Wielkie

Where is Jeziory Wielkie?: Jeziory Wielkie is a lake in LW10147, Poland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Jeziory Wielkie?: Jeziory Wielkie in LW10147, Poland has official water-quality measurements, shown as reported. Water clarity: 0.7 m visibility. Phosphorus: 160.5 µg/L. Chlorophyll-a (algae): 88.4 µg/L.
Is Jeziory Wielkie safe to swim in?: Jeziory Wielkie 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

12 measurements from 1 monitoring station, 2025. Retrieved from GIOŚ lake monitoring (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

Główny Inspektorat Ochrony Środowiskagios-pjwp12 samples · —

Analytical methods

GIOŚ PJWP lake monitoring

Monitoring station identifiers (1)

PL02S0502_0137

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