Complexe de Saint Marc
Complexe de Saint Marc in Haute-Vienne, France has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.7 m visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 4.3 µg/L.
- Clarity
- 1.7 m
Why Complexe de Saint Marc has no A–F grade
Complexe de Saint Marc 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, 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 French water agencies, via UNEP GEMS/Water.
Complexe de Saint Marc is a lake in Haute-Vienne County, France.
Source: the French water agencies, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2024-10-22. 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 Complexe de Saint Marc
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 5.7 ft. Phosphorus level: 20 µg/L. Chlorophyll-a: 4.3 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.73 m | Not graded |
| Phosphorus | 20 µg/L | Not graded |
| Chlorophyll-a (Algae) | 4.3 µg/L | Not graded |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Complexe de Saint Marc
Compare lakeside cabins, hotels, and vacation rentals near Complexe de Saint Marc in Haute-Vienne, 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 Complexe de Saint Marc
Frequently asked questions about Complexe de Saint Marc
What is the water quality of Complexe de Saint Marc?
- Complexe de Saint Marc in Haute-Vienne, France has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.7 m visibility. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 4.3 µg/L.
Is Complexe de Saint Marc safe to swim in?
- Complexe de Saint Marc 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 Complexe de Saint Marc across LakeGrade
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Where this data comes from
31 measurements from 1 monitoring station, 2017–2024. 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-fr31 samples · —
Analytical methods
- Hub'Eau / Naïades plans d'eau
Monitoring station identifiers (1)
L03-410
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.