Derm iwc chinese delagation_greg long 301109

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Derm iwc chinese delagation_greg long 301109

  1. 1. Environmental Values, Water Quality Objectives,Aquatic Ecosystem Health reporting
  2. 2. Example Siteno/minor impact moderate impact major/very major impact
  3. 3. Selected reference site locations are indicated bynumbers on the right-hand side of the riskassessment diagrams
  4. 4. Environmental FlowObjectives:The deviation below thisEFO should be minimized asthere may be an increasedrisk of unacceptableenvironmental degradation.
  5. 5. Environmental Protection (Water) Policy 1997
  6. 6. HUMAN USE EVs AQUATICECOSYSTEM Stock watering EV What are Environmental Values (EVs)? Primary Recreation EVs are the qualities of a water that support: (A) aquatic ecosystems and (B) human uses/values All waterways will possess the aquatic Irrigation ecosystem EV and in most cases, other human uses/values will also apply. EVs are protected from the effects of pollutants by achieving water quality Farm Supply objectives Industrial Use
  7. 7. What are Water QualityObjectives (WQOs)?Measures of water qualityindicators (physical, chemical, orbiological measures) that protectthe environmental values of thewaterThe WQO is the most stringentset of WQGs to support allidentified EVs
  8. 8. © 2009 SEQ Healthy Waterways Partnership
  9. 9. © 2009 SEQ Healthy Waterways Partnership
  10. 10. Ratings used to present averaged assessments in this report Average difference from reference Interpretation Rating condition green In reference condition Good condition yellow < 20 % Slightly disturbed condition orange > 20% and < 50 % Moderately disturbed condition red > 50 % Highly disturbed condition grey No assessment available No assessment available

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