Where is Suurijärvi?

Suurijärvi is a lake in Miehikkälä, Finland. This page reports official water-quality measurements, shown as reported.

Is Suurijärvi safe to swim in?

Suurijärvi 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 Suurijärvi?

Suurijärvi has a maximum depth of 51.5 feet.

Suurijärvi

Miehikkälä, FinlandView map Directions

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

Clarity

0.7 m

Murkier than most

Secchi · sampled 2025

Phosphorus

30.5 µg/L

More phosphorus than most

Measured by Syke

Chlorophyll-a

12.3 µg/L

Typical for Finland

Measured by Syke

Max depth

15.7 m

Bathymetric survey

52 ft max depth
Limited data

See the measurements Directions Where to stay

Suurijärvi in Miehikkälä, Finland has official water-quality measurements, shown as reported. Water clarity: 0.7 m visibility. Phosphorus: 30.5 µg/L. Chlorophyll-a (algae): 12.3 µg/L. Maximum depth: 51.5 ft.

Loading map…

How Suurijärvi is classified

Suurijärvi 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.

Suurijärvi is a lake in Miehikkälä County, Finland with a maximum depth of 52 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-08-04. Methodology: how these readings are compared.

What Suurijärvi is good for

From access and monitoring records, not editorial picks.

Deep water51.5 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 Suurijärvi 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.

Get alerts for Suurijärvi →

Water quality measurements for Suurijärvi

These are the measurements Syke publishes for Suurijärvi. More on the source.

Very murky, less than 2.3 ft of visibility. Phosphorus 30.5 µg/L. Chlorophyll-a 12.3 µg/L. TSI 58.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	0.7m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	30.5µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	12.3µg/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.	58	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Suurijärvi

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

Lake Details

Max depth

15.7 m

Stays via Stay22

Stays near Suurijärvi

Compare lakeside cabins, hotels, and vacation rentals near Suurijärvi in Miehikkälä, Finland — 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 Suurijärvi

Prices for Oct 2–4, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Follow Suurijärvi’s readings

Email me when new measurements post for this lake. Updates stay free.

Or email

Fishing Suurijärvi

→ Suurijärvi fishing regulations (limits, seasons, special rules)

Frequently asked questions about Suurijärvi

Where is Suurijärvi?: Suurijärvi is a lake in Miehikkälä, Finland. This page reports official water-quality measurements, shown as reported.
What is the water quality of Suurijärvi?: Suurijärvi in Miehikkälä, Finland has official water-quality measurements, shown as reported. Water clarity: 0.7 m visibility. Phosphorus: 30.5 µg/L. Chlorophyll-a (algae): 12.3 µg/L. Maximum depth: 51.5 ft.
Is Suurijärvi safe to swim in?: Suurijärvi 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 Suurijärvi?: Suurijärvi has a maximum depth of 51.5 feet.

Explore Suurijärvi across LakeQuality

Lake Fishing Forecast

Species activity outlook by water temperature and season

More lakes in Finland

Lakes in Finland

Official water quality for lakes in Finland

Lake water quality by country

EU bathing ratings and named-lake measurements

Where this data comes from

49 measurements from 1 monitoring station, 2016–2025. 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-vesla49 samples · 2016–2025

Analytical methods

SYKE VESLA

Monitoring station identifiers (1)

11158

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