Ovre Drengsrudvann Lake
Ovre Drengsrudvann Lake in Unknown, Norway has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 3.6 m visibility. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 6.3 µg/L.
- Clarity
- 3.6 m
Why Ovre Drengsrudvann Lake has no A–F grade
Ovre Drengsrudvann Lake in Norway 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 Norwegian Environment Agency, via UNEP GEMS/Water (OPEN GFQA).
Ovre Drengsrudvann Lake is a lake in Unknown County, Norway.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2021-10-18. 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 Ovre Drengsrudvann Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Good clarity, visible to about 11.6 ft. Phosphorus level: 13 µg/L. Chlorophyll-a: 6.3 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.55 m | Not graded |
| Phosphorus | 13 µg/L | Not graded |
| Chlorophyll-a (Algae) | 6.3 µg/L | Not graded |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Ovre Drengsrudvann Lake
Compare lakeside cabins, hotels, and vacation rentals near Ovre Drengsrudvann Lake in Unknown, Norway — 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 Ovre Drengsrudvann Lake
Frequently asked questions about Ovre Drengsrudvann Lake
What is the water quality of Ovre Drengsrudvann Lake?
- Ovre Drengsrudvann Lake in Unknown, Norway has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 3.6 m visibility. Phosphorus: 13 µg/L. Chlorophyll-a (algae): 6.3 µg/L.
Is Ovre Drengsrudvann Lake safe to swim in?
- Ovre Drengsrudvann 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.
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Where this data comes from
55 measurements from 1 monitoring station, 2017–2021. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- European Environment Agency
europeanenvironmentagenc55 samples · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
NOR00062
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: 2021-10-18
Monitoring stations: 1