Lac des Galens
Lac des Galens in Aveyron, France has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.6 m visibility. Chlorophyll-a (algae): 2.8 µg/L.
- Clarity
- 2.6 m
Why Lac des Galens has no A–F grade
Lac des Galens in France 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 and algae (chlorophyll-a), but not phosphorus.
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 French water agencies, via UNEP GEMS/Water.
Lac des Galens is a lake in Aveyron County, France.
Source: the French water agencies, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2020-09-30. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lac des Galens
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 8.5 ft. Chlorophyll-a: 2.8 µg/L. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.59 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 2.8 µg/L | Not graded |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lac des Galens
Compare lakeside cabins, hotels, and vacation rentals near Lac des Galens in Aveyron, France — 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 Lac des Galens
Frequently asked questions about Lac des Galens
What is the water quality of Lac des Galens?
- Lac des Galens in Aveyron, France has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.6 m visibility. Chlorophyll-a (algae): 2.8 µg/L.
Is Lac des Galens safe to swim in?
- Lac des Galens 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.
Explore Lac des Galens across LakeGrade
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Where this data comes from
12 measurements from 1 monitoring station, 2020. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-20.
Collected and reported by
- Office français de la biodiversité (Hub'Eau)
hubeau-fr12 samples · —
Analytical methods
- Hub'Eau / Naïades plans d'eau
Monitoring station identifiers (1)
O7785013
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.