Where is Iso Siikajärvi?

Iso Siikajärvi is a lake in Kangasniemi, Finland. This page reports official water-quality measurements, shown as reported.

Is Iso Siikajärvi safe to swim in?

Iso Siikajärvi 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 Siikajärvi?

Iso Siikajärvi has a maximum depth of 47.6 feet.

Iso Siikajärvi

Kangasniemi, FinlandView map Directions

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

Clarity

3 m

Clearer than most

Secchi · sampled 2025

Phosphorus

6.3 µg/L

Less phosphorus than most

Measured by Syke

Chlorophyll-a

1.6 µg/L

Less algae than most

Measured by Syke

Max depth

14.5 m

Bathymetric survey

48 ft max depth
Limited data

See the measurements Directions Where to stay

Iso Siikajärvi in Kangasniemi, Finland has official water-quality measurements, shown as reported. Water clarity: 3 m visibility. Phosphorus: 6.3 µg/L. Chlorophyll-a (algae): 1.6 µg/L. Maximum depth: 47.6 ft.

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How Iso Siikajärvi is classified

Iso Siikajärvi 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 Siikajärvi is a lake in Kangasniemi County, Finland with a maximum depth of 48 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-10-30. Methodology: how these readings are compared.

What Iso Siikajärvi is good for

From access and monitoring records, not editorial picks.

Clear water9.8 ft of visibility
Deep water47.6 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 Siikajärvi 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 Siikajärvi

These are the measurements Syke publishes for Iso Siikajärvi. More on the source.

Moderate clarity, visible to about 9.8 ft. Phosphorus 6.3 µg/L. Chlorophyll-a 1.6 µg/L. TSI 37.

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	6.3µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	1.6µg/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.	37	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Low nutrients, clear water. No reading is a swimming clearance.

Ask about Iso Siikajärvi

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

Lake Details

Max depth

14.5 m

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Fishing Iso Siikajärvi

→ Iso Siikajärvi fishing regulations (limits, seasons, special rules)

Frequently asked questions about Iso Siikajärvi

Where is Iso Siikajärvi?: Iso Siikajärvi is a lake in Kangasniemi, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Iso Siikajärvi?: Iso Siikajärvi in Kangasniemi, Finland has official water-quality measurements, shown as reported. Water clarity: 3 m visibility. Phosphorus: 6.3 µg/L. Chlorophyll-a (algae): 1.6 µg/L. Maximum depth: 47.6 ft.
Is Iso Siikajärvi safe to swim in?: Iso Siikajärvi 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 Siikajärvi?: Iso Siikajärvi has a maximum depth of 47.6 feet.

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Where this data comes from

7 measurements from 1 monitoring station, 2025. 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-vesla7 samples · 2025

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

15257

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