Invaso di San Liberato
Invaso di San Liberato in Terni, Italy has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1 m visibility. Phosphorus: 40 µg/L.
- Clarity
- 1 m
Why Invaso di San Liberato has no A–F grade
Invaso di San Liberato in Italy 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 phosphorus, but not 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 regional environmental agencies (ARPA Lombardia, ARPA Veneto, Arpae Emilia-Romagna, and ARPA Umbria).
Invaso di San Liberato is a lake in Terni County, Italy.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-12-09. 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 Invaso di San Liberato
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 3.3 ft of visibility. Phosphorus level: 40 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 m | Not graded |
| Phosphorus | 40 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Invaso di San Liberato
Compare lakeside cabins, hotels, and vacation rentals near Invaso di San Liberato in Terni, Italy — 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 Invaso di San Liberato
Frequently asked questions about Invaso di San Liberato
What is the water quality of Invaso di San Liberato?
- Invaso di San Liberato in Terni, Italy has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1 m visibility. Phosphorus: 40 µg/L.
Is Invaso di San Liberato safe to swim in?
- Invaso di San Liberato 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
53 measurements from 1 monitoring station, 2017–2024. Retrieved from Italian regional ARPA lake monitoring (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- ARPA Umbria
arpa-umb53 samples · 2017–2024
Analytical methods
- ARPA Umbria lake monitoring
Monitoring station identifiers (1)
LIB1
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: 2024-12-09
Monitoring stations: 1