Where is Dam Topolnica?

Dam Topolnica is a lake in Bulgaria. This page reports official water-quality measurements, shown as reported.

Is Dam Topolnica safe to swim in?

Dam Topolnica 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.

Dam Topolnica

BulgariaView map Directions

ExEA publishes the water-quality measurements for Dam Topolnica. Here is what has been measured.

Clarity

2.3 m

Secchi · sampled 2023

Phosphorus

42 µg/L

Measured by ExEA

Chlorophyll-a

7.4 µg/L

Measured by ExEA

Limited data

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Dam Topolnica in Bulgaria has official water-quality measurements, shown as reported. Water clarity: 2.3 m visibility. Phosphorus: 42 µg/L. Chlorophyll-a (algae): 7.4 µg/L.

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How Dam Topolnica is classified

Dam Topolnica in Bulgaria 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 Executive Environment Agency of Bulgaria, via UNEP GEMS/Water.

Dam Topolnica is a lake in Unknown County, Bulgaria.

Source: the Executive Environment Agency of Bulgaria, via UNEP GEMS/Water — not the EPA Water Quality Portal, last sampled 2023-11-20. 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 Dam Topolnica is safe to swim in today is a call for the Executive Environment Agency of Bulgaria, via UNEP GEMS/Water and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Dam Topolnica

These are the measurements ExEA publishes for Dam Topolnica. More on the source.

Moderate clarity, visible to about 7.4 ft. Phosphorus 42 µg/L. Chlorophyll-a 7.4 µg/L. TSI 52.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)	2.25m	Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus	42µg/L	Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	7.4µg/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.	52	Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Dam Topolnica

Answers come straight from the public measurements and survey records on this page.

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Stays near Dam Topolnica

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Fishing Dam Topolnica

→ Dam Topolnica fishing regulations (limits, seasons, special rules)

Frequently asked questions about Dam Topolnica

Where is Dam Topolnica?: Dam Topolnica is a lake in Bulgaria. This page reports official water-quality measurements, shown as reported.
What is the water quality of Dam Topolnica?: Dam Topolnica in Bulgaria has official water-quality measurements, shown as reported. Water clarity: 2.3 m visibility. Phosphorus: 42 µg/L. Chlorophyll-a (algae): 7.4 µg/L.
Is Dam Topolnica safe to swim in?: Dam Topolnica 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

29 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 Agencyeuropeanenvironmentagenc29 samples · —

Analytical methods

GEMStat OPEN / CC BY 4.0

Monitoring station identifiers (1)

BGR00121

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