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LakeQuality

Upper Lough Erne

Northern Ireland, Northern IrelandView mapDirections

NIEA publishes the water-quality measurements for Upper Lough Erne. Here is what has been measured.

Phosphorus
70 µg/L
Measured by NIEA
  • Limited data

Upper Lough Erne in Northern Ireland, Northern Ireland has official water-quality measurements, shown as reported. Phosphorus: 70 µg/L.

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How Upper Lough Erne is classified

Upper Lough Erne in Northern Ireland 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 phosphorus, but not water clarity 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 Northern Ireland Environment Agency (DAERA).

Upper Lough Erne is a lake in Northern Ireland County, Northern Ireland.

Source: the Northern Ireland Environment Agency (DAERA) — not the EPA Water Quality Portal, last sampled 2024-11-20. 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 Upper Lough Erne is safe to swim in today is a call for the Northern Ireland Environment Agency (DAERA) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Upper Lough Erne

These are the measurements NIEA publishes for Upper Lough Erne. More on the source.

No clarity data. Phosphorus 70 µg/L. TSI 65.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)No reading

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus70µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)No reading

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.65Eutrophic
OligotrophicMesotrophicEutrophicHypereutrophic

High nutrients, frequent algae, reduced clarity

Ask about Upper Lough Erne

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

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Frequently asked questions about Upper Lough Erne

Where is Upper Lough Erne?

Upper Lough Erne is a lake in Northern Ireland, Northern Ireland. This page reports official water-quality measurements, shown as reported.

What is the water quality of Upper Lough Erne?

Upper Lough Erne in Northern Ireland, Northern Ireland has official water-quality measurements, shown as reported. Phosphorus: 70 µg/L.

Measurements on this page ↑

Is Upper Lough Erne safe to swim in?

Upper Lough Erne 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.

Swimming on this page ↑

Where this data comes from

272 measurements from 5 monitoring stations, 2016–2024. Retrieved from the Northern Ireland Environment Agency (not the EPA Water Quality Portal) on 2026-08-16.

Collected and reported by

  • Department of Agriculture, Environment and Rural Affairs (Northern Ireland)daera-ni272 samples · 2016–2024

Analytical methods

  • DAERA NIEA lake nutrient monitoring
Monitoring station identifiers (5)
  • 10670
  • 10671
  • 10673
  • 10674
  • 10677

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