Where is Olecko Wielkie?

Olecko Wielkie is a lake in LW30045, Poland. This page reports official water-quality measurements, shown as reported.

Is Olecko Wielkie safe to swim in?

Olecko 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.

Olecko Wielkie

LW30045, PolandView map Directions

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

Clarity

3.6 m

Clearer than most

Secchi · sampled 2025

Phosphorus

25 µg/L

Less phosphorus than most

Measured by GIOŚ

Chlorophyll-a

6.1 µg/L

Less algae than most

Measured by GIOŚ

Limited data

See the measurements Directions Where to stay

Olecko Wielkie in LW30045, Poland has official water-quality measurements, shown as reported. Water clarity: 3.6 m visibility. Phosphorus: 25 µg/L. Chlorophyll-a (algae): 6.1 µg/L.

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How Olecko Wielkie is classified

Olecko 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).

Olecko Wielkie is a lake in LW30045 County, Poland.

Source: the Chief Inspectorate of Environmental Protection (Główny Inspektorat Ochrony Środowiska) — not the EPA Water Quality Portal, last sampled 2025-10-15. Methodology: how these readings are compared.

What Olecko Wielkie is good for

From access and monitoring records, not editorial picks.

Clear water11.9 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 Olecko 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 Olecko Wielkie

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

Good clarity, visible to about 11.9 ft. Phosphorus 25 µg/L. Chlorophyll-a 6.1 µg/L. TSI 47.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	3.64m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	25µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	6.1µg/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 Olecko Wielkie

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

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Stays near Olecko Wielkie

Compare lakeside cabins, hotels, and vacation rentals near Olecko Wielkie in LW30045, Poland — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Olecko Wielkie

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Fishing Olecko Wielkie

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

Frequently asked questions about Olecko Wielkie

Where is Olecko Wielkie?: Olecko Wielkie is a lake in LW30045, Poland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Olecko Wielkie?: Olecko Wielkie in LW30045, Poland has official water-quality measurements, shown as reported. Water clarity: 3.6 m visibility. Phosphorus: 25 µg/L. Chlorophyll-a (algae): 6.1 µg/L.
Is Olecko Wielkie safe to swim in?: Olecko 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.

Explore Olecko Wielkie across LakeQuality

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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)

PL01S0302_3918

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