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Hafan
- Cynllunio ac ymchwil
  - Cynllunio
    - Planning policy
      - Water Framework Directive
        
        How the water framework directive will happen
        
        Standards and objectives
        
        Water quality
        
        River quality (GQA) data & maps

General Quality Assessment (GQA) results and river quality maps

Summary tables of results and river quality maps from the General Quality Assessment (GQA) of rivers.

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