Lac du Val Joly
FranceView mapDirections
Eau France publishes the water-quality measurements for Lac du Val Joly. Here is what has been measured.
- Limited data
Lac du Val Joly in France has official water-quality measurements, shown as reported. Phosphorus: 57 µg/L.
How Lac du Val Joly is classified
Lac du Val Joly 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 phosphorus, but not water clarity 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 du Val Joly is a lake in Unknown County, France.
Source: the French water agencies, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2018-09-25. 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 du Val Joly 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 du Val Joly
These are the measurements Eau France publishes for Lac du Val Joly. More on the source.
No clarity data. Phosphorus 57 µg/L. TSI 62.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 57µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading 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. | 62 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lac du Val Joly
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Lac du Val Joly
Compare lakeside cabins, hotels, and vacation rentals near Lac du Val Joly in 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.
Top-rated places to stay near Lac du Val Joly
Prices for Oct 2–4, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow Lac du Val Joly’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lac du Val Joly
Frequently asked questions about Lac du Val Joly
Where is Lac du Val Joly?
- Lac du Val Joly is a lake in France. This page reports official water-quality measurements, shown as reported.
What is the water quality of Lac du Val Joly?
- Lac du Val Joly in France has official water-quality measurements, shown as reported. Phosphorus: 57 µg/L.
Is Lac du Val Joly safe to swim in?
- Lac du Val Joly 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 Lac du Val Joly across LakeQuality
More lakes in France
Where this data comes from
11 measurements from 1 monitoring station, 2016–2018. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- European Environment Agency
europeanenvironmentagenc11 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
FRA00268
Authority classifications are shown as the authority published them. See where the data comes from and data sources.