Where is Iso Venejärvi?

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

Is Iso Venejärvi safe to swim in?

Iso Venejärvi 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 Venejärvi?

Iso Venejärvi has a maximum depth of 60 feet.

Iso Venejärvi

Rovaniemi, FinlandView map Directions

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

Clarity

2.5 m

Clearer than most

Secchi · sampled 2024

Phosphorus

10.1 µg/L

Typical for Finland

Measured by Syke

Chlorophyll-a

5.6 µg/L

Typical for Finland

Measured by Syke

Max depth

18.3 m

Bathymetric survey

60 ft max depth
Limited data

See the measurements Directions Where to stay

Iso Venejärvi in Rovaniemi, Finland has official water-quality measurements, shown as reported. Water clarity: 2.5 m visibility. Phosphorus: 10.1 µg/L. Chlorophyll-a (algae): 5.6 µg/L. Maximum depth: 60 ft.

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How Iso Venejärvi is classified

Iso Venejärvi 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 Venejärvi is a lake in Rovaniemi County, Finland with a maximum depth of 60 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2024-09-04. Methodology: how these readings are compared.

What Iso Venejärvi is good for

From access and monitoring records, not editorial picks.

Deep water60 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 Venejärvi 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 Venejärvi

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

Moderate clarity, visible to about 8.2 ft. Phosphorus 10.1 µg/L. Chlorophyll-a 5.6 µg/L. TSI 44.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.5m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	10.1µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	5.6µg/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.	44	Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

Ask about Iso Venejärvi

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

Lake Details

Max depth

18.3 m

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Fishing Iso Venejärvi

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

Frequently asked questions about Iso Venejärvi

Where is Iso Venejärvi?: Iso Venejärvi is a lake in Rovaniemi, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Iso Venejärvi?: Iso Venejärvi in Rovaniemi, Finland has official water-quality measurements, shown as reported. Water clarity: 2.5 m visibility. Phosphorus: 10.1 µg/L. Chlorophyll-a (algae): 5.6 µg/L. Maximum depth: 60 ft.
Is Iso Venejärvi safe to swim in?: Iso Venejärvi 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 Venejärvi?: Iso Venejärvi has a maximum depth of 60 feet.

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Where this data comes from

11 measurements from 1 monitoring station, 2024. 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-vesla11 samples · 2024

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

37820

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