Where is Lago di Santa Caterina?

Lago di Santa Caterina is a lake in Belluno, Italy. This page reports official water-quality measurements, shown as reported.

Is Lago di Santa Caterina safe to swim in?

Lago di Santa Caterina 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.

Lago di Santa Caterina

Belluno, ItalyView map Directions

ARPA publishes the water-quality measurements for Lago di Santa Caterina. Here is what has been measured.

Clarity

2 m

Typical for Italy

Secchi · sampled 2025

Phosphorus

6 µg/L

Less phosphorus than most

Measured by ARPA

Chlorophyll-a

0.7 µg/L

Measured by ARPA

Limited data

See the measurements Directions Where to stay

Lago di Santa Caterina in Belluno, Italy has official water-quality measurements, shown as reported. Water clarity: 2 m visibility. Phosphorus: 6 µg/L. Chlorophyll-a (algae): 0.7 µg/L.

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How Lago di Santa Caterina is classified

Lago di Santa Caterina in Italy is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).

LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.

Monitoring: the regional environmental agencies (ARPA Lombardia, ARPA Veneto, Arpae Emilia-Romagna, and ARPA Umbria).

Lago di Santa Caterina is a lake in Belluno County, Italy.

Source: the regional environmental agencies (ARPA Lombardia, ARPA Veneto, Arpae Emilia-Romagna, and ARPA Umbria) — not the EPA Water Quality Portal, last sampled 2025-10-27. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Lago di Santa Caterina is safe to swim in today is a call for the regional environmental agencies (ARPA Lombardia, ARPA Veneto, Arpae Emilia-Romagna, and ARPA Umbria) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Lago di Santa Caterina

These are the measurements ARPA publishes for Lago di Santa Caterina. More on the source.

Murky, only visible to about 6.6 ft. Phosphorus 6 µg/L. Chlorophyll-a 0.7 µg/L. TSI 36.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	6µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	0.7µg/L	Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water.
Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.	36	Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic

Low nutrients, clear water. No reading is a swimming clearance.

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Fishing Lago di Santa Caterina

→ Lago di Santa Caterina fishing regulations (limits, seasons, special rules)

Frequently asked questions about Lago di Santa Caterina

Where is Lago di Santa Caterina?: Lago di Santa Caterina is a lake in Belluno, Italy. This page reports official water-quality measurements, shown as reported.
What is the water quality of Lago di Santa Caterina?: Lago di Santa Caterina in Belluno, Italy has official water-quality measurements, shown as reported. Water clarity: 2 m visibility. Phosphorus: 6 µg/L. Chlorophyll-a (algae): 0.7 µg/L.
Is Lago di Santa Caterina safe to swim in?: Lago di Santa Caterina 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

117 measurements from 1 monitoring station, 2016–2025. Retrieved from Italian regional ARPA lake monitoring (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

ARPA Veneto (ARPAV)arpa-ven117 samples · 2016–2025

Analytical methods

ARPA Veneto lake monitoring

Monitoring station identifiers (1)

362

Authority classifications are shown as the authority published them. See where the data comes from and data sources.