Lac de Clarens
Lot-et-Garonne, FranceView mapDirections
Eau France publishes the water-quality measurements for Lac de Clarens. Here is what has been measured.
- Limited data
Lac de Clarens in Lot-et-Garonne, France has official water-quality measurements, shown as reported. Water clarity: 1.9 m visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 8 µg/L.
How Lac de Clarens is classified
Lac de Clarens in France 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 French water agencies, via UNEP GEMS/Water.
Lac de Clarens is a lake in Lot-et-Garonne County, France.
Source: the French water agencies, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2023-10-03. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lac de Clarens is safe to swim in today is a call for the French water agencies, via UNEP GEMS/Water and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lac de Clarens
These are the measurements Eau France publishes for Lac de Clarens. More on the source.
Murky, only visible to about 6.2 ft. Phosphorus 14 µg/L. Chlorophyll-a 8 µg/L. TSI 48.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.9m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 14µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 8µg/L | Measured, 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. | 48 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Frequently asked questions about Lac de Clarens
Where is Lac de Clarens?
- Lac de Clarens is a lake in Lot-et-Garonne, France. This page reports official water-quality measurements, shown as reported.
What is the water quality of Lac de Clarens?
- Lac de Clarens in Lot-et-Garonne, France has official water-quality measurements, shown as reported. Water clarity: 1.9 m visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 8 µg/L.
Is Lac de Clarens safe to swim in?
- Lac de Clarens 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
36 measurements from 1 monitoring station, 2017–2023. 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-fr36 samples · —
Analytical methods
- Hub'Eau / Naïades plans d'eau
Monitoring station identifiers (1)
O9105003
Authority classifications are shown as the authority published them. See where the data comes from and data sources.