De Gavers Lake
De Gavers Lake in Unknown, Belgium has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.8 m visibility. Phosphorus: 83 µg/L. Chlorophyll-a (algae): 1.9 µg/L.
- Clarity
- 1.8 m
Why De Gavers Lake has no A–F grade
De Gavers Lake in Belgium 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, phosphorus and algae (chlorophyll-a).
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 Flanders Environment Agency (VMM), via UNEP GEMS/Water.
De Gavers Lake is a lake in Unknown County, Belgium.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-09-11. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for De Gavers Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Murky, only visible to about 5.9 ft. Phosphorus level: 83 µg/L. Chlorophyll-a: 1.9 µg/L. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.8 m | Not graded |
| Phosphorus | 83 µg/L | Not graded |
| Chlorophyll-a (Algae) | 1.9 µg/L | Not graded |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near De Gavers Lake
Compare lakeside cabins, hotels, and vacation rentals near De Gavers Lake in Unknown, Belgium — 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.
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Fishing De Gavers Lake
Frequently asked questions about De Gavers Lake
What is the water quality of De Gavers Lake?
- De Gavers Lake in Unknown, Belgium has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1.8 m visibility. Phosphorus: 83 µg/L. Chlorophyll-a (algae): 1.9 µg/L.
Is De Gavers Lake safe to swim in?
- De Gavers Lake 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 De Gavers Lake across LakeGrade
More lakes in Belgium
Where this data comes from
122 measurements from 1 monitoring station, 2016–2023. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- European Environment Agency
europeanenvironmentagenc122 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
BEL00163
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2023-09-11
Monitoring stations: 1