Rottachsee
Rottachsee in Oberallgäu, Bavaria has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.9 m visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 2 µg/L.
- Clarity
- 2.9 m
Why Rottachsee has no A–F grade
Rottachsee in Bavaria 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 Bavarian Environment Agency (LfU) Gewässerkundlicher Dienst.
Rottachsee is a lake in Oberallgäu County, Bavaria.
Source: the Bavarian Environment Agency (LfU) Gewässerkundlicher Dienst — not the EPA Water Quality Portal, last sampled 2024-11-26. 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 Rottachsee
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 9.5 ft. Phosphorus level: 14 µg/L. Chlorophyll-a: 2 µg/L. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.9 m | Not graded |
| Phosphorus | 14 µg/L | Not graded |
| Chlorophyll-a (Algae) | 2 µg/L | Not graded |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Rottachsee
Compare lakeside cabins, hotels, and vacation rentals near Rottachsee in Oberallgäu, Bavaria — 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 Rottachsee
Frequently asked questions about Rottachsee
What is the water quality of Rottachsee?
- Rottachsee in Oberallgäu, Bavaria has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.9 m visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 2 µg/L.
Is Rottachsee safe to swim in?
- Rottachsee 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
99 measurements from 1 monitoring station, 2018–2024. Retrieved from the listed programme (not the EPA Water Quality Portal). See data sources on 2026-08-20.
Collected and reported by
- Bayerisches Landesamt für Umwelt (LfU) — Gewässerkundlicher Dienst
gkd-by99 samples · —
Analytical methods
- LfU Bayern GKD lake chemistry
Monitoring station identifiers (1)
2232
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.