Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy
Val-d'Oise, FranceView mapDirections
Eau France publishes the water-quality measurements for Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy. Here is what has been measured.
- Limited data
Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy in Val-d'Oise, France has official water-quality measurements, shown as reported. Water clarity: 3.9 m visibility. Chlorophyll-a (algae): 1 µg/L.
How Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy is classified
Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy 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.
Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy is a lake in Val-d'Oise County, France.
Source: the French water agencies, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2025-09-17. Methodology: how these readings are compared.
What Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy is good for
From access and monitoring records, not editorial picks.
- Clear water12.8 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy 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.
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Water quality measurements for Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy
These are the measurements Eau France publishes for Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy. More on the source.
Good clarity, visible to about 12.8 ft. Chlorophyll-a 1 µg/L. TSI 35.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.9m | 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) | 1µg/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. | 35 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy
Answers come straight from the public measurements and survey records on this page.
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Frequently asked questions about Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy
Where is Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy?
- Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy is a lake in Val-d'Oise, France. This page reports official water-quality measurements, shown as reported.
What is the water quality of Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy?
- Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy in Val-d'Oise, France has official water-quality measurements, shown as reported. Water clarity: 3.9 m visibility. Chlorophyll-a (algae): 1 µg/L.
Is Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy safe to swim in?
- Plan D'Eau de la Base de Plein Air Et de Loisirs de Cergy 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
20 measurements from 1 monitoring station, 2019–2025. 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-fr20 samples · —
Analytical methods
- Hub'Eau / Naïades plans d'eau
Monitoring station identifiers (1)
H2299303
Authority classifications are shown as the authority published them. See where the data comes from and data sources.