Lac de la Prade
Gironde, FranceView mapDirections
Eau France publishes the water-quality measurements for Lac de la Prade. Here is what has been measured.
- Limited data
Lac de la Prade in Gironde, France has official water-quality measurements, shown as reported. Water clarity: 0.4 m visibility. Chlorophyll-a (algae): 20.5 µg/L.
How Lac de la Prade is classified
Lac de la Prade 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 and algae (chlorophyll-a), but not phosphorus.
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 la Prade is a lake in Gironde County, France.
Source: the French water agencies, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2023-09-28. 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 la Prade 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 la Prade
These are the measurements Eau France publishes for Lac de la Prade. More on the source.
Very murky, less than 1.2 ft of visibility. Chlorophyll-a 20.5 µg/L. TSI 67.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.38m | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | 20.5µg/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. | 67 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Frequently asked questions about Lac de la Prade
Where is Lac de la Prade?
- Lac de la Prade is a lake in Gironde, France. This page reports official water-quality measurements, shown as reported.
What is the water quality of Lac de la Prade?
- Lac de la Prade in Gironde, France has official water-quality measurements, shown as reported. Water clarity: 0.4 m visibility. Chlorophyll-a (algae): 20.5 µg/L.
Is Lac de la Prade safe to swim in?
- Lac de la Prade 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
24 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-fr24 samples · —
Analytical methods
- Hub'Eau / Naïades plans d'eau
Monitoring station identifiers (1)
O9415013
Authority classifications are shown as the authority published them. See where the data comes from and data sources.