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LakeQuality

Molnträsk Lake

NR
Not yet rated
0.7 m clear · Eutrophic
Limited DataEutrophic

Molnträsk Lake in Kirkkonummi, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.7 m visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 20 µg/L. Maximum depth: 21.3 ft.

Clarity
0.7 m
Max depth
6.5 m
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Why Molnträsk Lake has no A–F grade

Molnträsk Lake in Finland is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).

A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.

Monitoring: the Finnish Environment Institute (Syke) and the ELY Centres.

Molnträsk Lake is a lake in Kirkkonummi County, Finland with a maximum depth of 21 feet.

Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-02-24. Grade methodology: LakeGrade methodology.

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Swimming Safety

Not rated

Limited data

Not rated for swimming — there is not enough monitoring data to judge this lake

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Water quality measurements for Molnträsk Lake

These readings exist but do not meet the evidence bar for an A–F grade — see why.

Very murky, less than 2.3 ft of visibility. Phosphorus level: 36 µg/L. Chlorophyll-a: 20 µg/L. Trophic State Index: 60.

MetricValueGrade
Water Clarity (Secchi Depth)0.7 mNot graded
Phosphorus36 µg/LNot graded
Chlorophyll-a (Algae)20 µg/LNot graded
Trophic State Index (TSI)60Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth6.5 m

Where to stay near Molnträsk Lake

Compare lakeside cabins, hotels, and vacation rentals near Molnträsk Lake in Kirkkonummi, 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.

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Fishing Molnträsk Lake

Frequently asked questions about Molnträsk Lake

What is the water quality of Molnträsk Lake?

Molnträsk Lake in Kirkkonummi, Finland has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 0.7 m visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 20 µg/L. Maximum depth: 21.3 ft.

Is Molnträsk Lake safe to swim in?

Molnträsk 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 Molnträsk Lake?

Molnträsk Lake has a maximum depth of 21.3 feet.

Where this data comes from

29 measurements from 1 monitoring station, 2016–2026. 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-vesla29 samples · 2016–2026

Analytical methods

  • SYKE VESLA
Monitoring station identifiers (1)
  • 53078

Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.

Data Sources

Water quality data from the EPA Water Quality Portal

Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion

Most recent sample: 2026-02-24

Monitoring stations: 1

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