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Lough Derg Catchment Protection Scheme >
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Lough Derg Catchment Protection Scheme

Lough Derg is the largest lake on the River Shannon and it's catchment is an important natural resource supporting tourism, angling, and the provision of water for domestic and industrial use.

Increased levels of nutrients, principally phosphorus, reaching surface waters in the catchment has led to the enrichment of the waters (eutrophication) causing an acceleration and undesirable growth of microscopic algae and other forms of plant life. The nutrient enrichment has arisen from:

  • Point sources, such as sewage and industrial discharges.
  • Diffuse sources, arising from agriculture, forestry, septic tanks and peat milling operations.

A major Catchment-Based Initiative is currently underway to arrest the eutrophication process and return the lake to its original moderately enriched conditions. Cohesion Funding is being provided to upgrade waste water treatment and collection systems, as well as providing phosphate removal facilities at the main population centres. A catchment monitoring an management system is also being implemented to monitor the effects of these initiatives and other nutrient reduction measures in the catchment.

Implementing Agencies:
  • Galway
  • Offaly
  • Tipperary (NR)
  • Westmeath
  • Roscommon
  • Clare County Council
Ballinasloe (P) removal 0.5m
Portuma Sewage 5.8m
Tullamore Sewerage/(P) Removal 1.0m
Clara Sewerage 3.0m
Birr (P) removal 0.3m
Nenagh Sewerage/(P) Removal £2.3m
Roscrea Sewerage 4.5m
Moate Sewerage 4.5m
Athlone (Monksland) Sewerage 2.1m
Athlone (Westbank) Sewerage 2.2m
Total 26.2m

This project is co-financed by the Cohesion Fund.

Photograph of Lough Derg.
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