L'Etang du Stock
L'Etang du Stock in Moselle, France has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.1 m visibility. Chlorophyll-a (algae): 4 µg/L.
- Clarity
- 1.1 m
Why L'Etang du Stock has no A–F grade
L'Etang du Stock 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.
L'Etang du Stock is a lake in Moselle County, France.
Source: the French water agencies, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2023-09-20. 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 L'Etang du Stock
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 3.6 ft. Chlorophyll-a: 4 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.1 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 4 µg/L | Not graded |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near L'Etang du Stock
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Fishing L'Etang du Stock
Frequently asked questions about L'Etang du Stock
What is the water quality of L'Etang du Stock?
- L'Etang du Stock in Moselle, France has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.1 m visibility. Chlorophyll-a (algae): 4 µg/L.
Is L'Etang du Stock safe to swim in?
- L'Etang du Stock 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.
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Where this data comes from
16 measurements from 1 monitoring station, 2021–2023. 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-fr16 samples · —
Analytical methods
- Hub'Eau / Naïades plans d'eau
Monitoring station identifiers (1)
A9045383
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.