Where is Iso-Naakkima Lake?

Iso-Naakkima Lake is a lake in Pieksämäki, Finland. This page reports official water-quality measurements, shown as reported.

Is Iso-Naakkima Lake safe to swim in?

Iso-Naakkima Lake 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.

How deep is Iso-Naakkima Lake?

Iso-Naakkima Lake has a maximum depth of 49.2 feet.

Iso-Naakkima Lake

Pieksämäki, FinlandView map Directions

Syke publishes the water-quality measurements for Iso-Naakkima Lake. Here is what has been measured.

Clarity

2.8 m

Clearer than most

Secchi · sampled 2023

Phosphorus

13 µg/L

Typical for Finland

Measured by Syke

Chlorophyll-a

4.3 µg/L

Less algae than most

Measured by Syke

Max depth

15 m

Bathymetric survey

49 ft max depth
Limited data

See the measurements Directions Where to stay

Iso-Naakkima Lake in Pieksämäki, Finland has official water-quality measurements, shown as reported. Water clarity: 2.8 m visibility. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 4.3 µg/L. Maximum depth: 49.2 ft.

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How Iso-Naakkima Lake is classified

Iso-Naakkima Lake in Finland 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 Finnish Environment Institute (Syke) and the ELY Centres.

Iso-Naakkima Lake is a lake in Pieksämäki County, Finland with a maximum depth of 49 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2023-10-16. Methodology: how these readings are compared.

What Iso-Naakkima Lake is good for

From access and monitoring records, not editorial picks.

Deep water49.2 ft surveyed max depth

Swimming conditions

No reading

Limited data

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

Whether Iso-Naakkima Lake is safe to swim in today is a call for the Finnish Environment Institute (Syke) and the ELY Centres and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Iso-Naakkima Lake

These are the measurements Syke publishes for Iso-Naakkima Lake. More on the source.

Moderate clarity, visible to about 9 ft. Phosphorus 13 µg/L. Chlorophyll-a 4.3 µg/L. TSI 44.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.75m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	13µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	4.3µg/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.	44	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Iso-Naakkima Lake

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

Lake Details

Max depth

15 m

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Stays near Iso-Naakkima Lake

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Fishing Iso-Naakkima Lake

→ Iso-Naakkima Lake fishing regulations (limits, seasons, special rules)

Frequently asked questions about Iso-Naakkima Lake

Where is Iso-Naakkima Lake?: Iso-Naakkima Lake is a lake in Pieksämäki, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Iso-Naakkima Lake?: Iso-Naakkima Lake in Pieksämäki, Finland has official water-quality measurements, shown as reported. Water clarity: 2.8 m visibility. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 4.3 µg/L. Maximum depth: 49.2 ft.
Is Iso-Naakkima Lake safe to swim in?: Iso-Naakkima Lake 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.
How deep is Iso-Naakkima Lake?: Iso-Naakkima Lake has a maximum depth of 49.2 feet.

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Where this data comes from

20 measurements from 1 monitoring station, 2017–2023. Retrieved from Syke VESLA (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

Finnish Environment Institute (Syke) and ELY Centressyke-vesla20 samples · 2017–2023

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

15402

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