Plan D'Eau D'Anneville-Ambourville
Plan D'Eau D'Anneville-Ambourville in Seine-Maritime, France has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 3.2 m visibility. Chlorophyll-a (algae): 1 µg/L.
- Clarity
- 3.2 m
Why Plan D'Eau D'Anneville-Ambourville has no A–F grade
Plan D'Eau D'Anneville-Ambourville 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 and algae (chlorophyll-a), but not phosphorus.
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.
Plan D'Eau D'Anneville-Ambourville is a lake in Seine-Maritime County, France.
Source: the French water agencies, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2026-05-28. Grade methodology: LakeGrade methodology.
Watch Plan D'Eau D'Anneville-Ambourville water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Plan D'Eau D'Anneville-Ambourville
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Good clarity, visible to about 10.3 ft. Chlorophyll-a: 1 µg/L. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.15 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 1 µg/L | Not graded |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Plan D'Eau D'Anneville-Ambourville
Compare lakeside cabins, hotels, and vacation rentals near Plan D'Eau D'Anneville-Ambourville in Seine-Maritime, 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 Plan D'Eau D'Anneville-Ambourville
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Plan D'Eau D'Anneville-Ambourville
Frequently asked questions about Plan D'Eau D'Anneville-Ambourville
What is the water quality of Plan D'Eau D'Anneville-Ambourville?
- Plan D'Eau D'Anneville-Ambourville in Seine-Maritime, France has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 3.2 m visibility. Chlorophyll-a (algae): 1 µg/L.
Is Plan D'Eau D'Anneville-Ambourville safe to swim in?
- Plan D'Eau D'Anneville-Ambourville 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 Plan D'Eau D'Anneville-Ambourville across LakeGrade
More lakes in France
Where this data comes from
20 measurements from 1 monitoring station, 2020–2026. 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)
H5105513
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.