Skip to main content
LakeQuality

Summasjärvi

Saarijärvi, FinlandView mapDirections

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

Clarity
1.2 m
Typical for Finland
Secchi · sampled 2025
Phosphorus
25.5 µg/L
Typical for Finland
Measured by Syke
Chlorophyll-a
11.1 µg/L
Typical for Finland
Measured by Syke
Max depth
37.3 m
Bathymetric survey
  • 122 ft max depth
  • Limited data

Summasjärvi in Saarijärvi, Finland has official water-quality measurements, shown as reported. Water clarity: 1.2 m visibility. Phosphorus: 25.5 µg/L. Chlorophyll-a (algae): 11.1 µg/L. Maximum depth: 122.4 ft.

Loading map…

How Summasjärvi is classified

Summasjärvi 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.

Summasjärvi is a lake in Saarijärvi County, Finland with a maximum depth of 122 feet.

Source: the Finnish Environment Institute (Syke) and the ELY Centres — not the EPA Water Quality Portal, last sampled 2025-08-20. Methodology: how these readings are compared.

What Summasjärvi is good for

From access and monitoring records, not editorial picks.

  • Deep water122.4 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 Summasjärvi 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 Summasjärvi →

Water quality measurements for Summasjärvi

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

Murky, only visible to about 3.9 ft. Phosphorus 25.5 µg/L. Chlorophyll-a 11.1 µg/L. TSI 54.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)1.2mMeasured, not scored

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus25.5µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)11.1µg/LMeasured, 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.54Eutrophic
OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Summasjärvi

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

Lake Details

Max depth

37.3 m

Stays via Stay22

Stays near Summasjärvi

Compare lakeside cabins, hotels, and vacation rentals near Summasjärvi in Saarijärvi, 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 Summasjärvi

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 Summasjärvi’s readings

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


Or email

Fishing Summasjärvi

Frequently asked questions about Summasjärvi

Where is Summasjärvi?

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

What is the water quality of Summasjärvi?

Summasjärvi in Saarijärvi, Finland has official water-quality measurements, shown as reported. Water clarity: 1.2 m visibility. Phosphorus: 25.5 µg/L. Chlorophyll-a (algae): 11.1 µg/L. Maximum depth: 122.4 ft.

Measurements on this page ↑

Is Summasjärvi safe to swim in?

Summasjärvi 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.

Swimming on this page ↑

How deep is Summasjärvi?

Summasjärvi has a maximum depth of 122.4 feet.

Where this data comes from

94 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-vesla94 samples · 2016–2025

Analytical methods

  • SYKE VESLA
Monitoring station identifiers (1)
  • 25969

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