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What need to be balanced?

Classification of water resources and determination of the comprehensive reserve and Resource Quality Objectives in the Mvoti to Umzimkulu Water Management Area Proposed methodology to way up the level of protection against water use towards finding the desirable balance and Management Class

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What need to be balanced?

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  1. Classification of water resources and determination of the comprehensive reserve and Resource Quality Objectives in the Mvoti to Umzimkulu Water Management Area Proposed methodology to way up the level of protection against water use towards finding the desirable balance and Management Class Presented by: Pieter van Rooyen 26 November 2013

  2. What need to be balanced? • Degree of the ecological health defined by Ecological Categories of biophysical nodes (none-monetary) • Ecological Goods and Services Attributes (none-monetary) • Socio-Economic implications (quantitative: monetary and job count)

  3. Integrated Assessment of Scenarios Elements Variables (Resource Unit) Scenario Assessment

  4. What are scenarios? • Scenarios, in context of water resource management and planning are plausible definitions (settings) of all the factors (variables) that influence the water balance and water quality in a catchment and the system as a whole

  5. What are scenarios used for? • Different levels of water use and protection are evaluated with the aim to find a preferred balanced scenario • Water Resource Classification is the process to evaluate and recommend what that balance scenario entails

  6. Catchment Analysis Catchment Resource Availability Socio-Economic Water Requirements Ecological Water Requirements Use Protection Management Class (Decision)

  7. Scenario Evaluation Process • Ecological • EGSA • Economics • Non-Ecological Water Quality • Evaluate against • Vision

  8. Multi-criteria assessment method For all scenarios For each reach / node For IUA / system Relative importance Weighting process Score Degree of meeting REC Prevailing situation Integrated Comparison (all three variables) Weighting process Score Relative to present provisions Makeup of economy Weighting process Score Relative to base condition

  9. Scenario Comparison Visualisation REC PES Relative weights

  10. B Scenario D Deriving the Management Class Stream Flow Reduction Activity Small Dams B Scenario D Results D Rural D Irrigation Rating Rules Rural C Nature Reserve E C Irrigation C Industrial Urban Management Class III C Biophysical Node EWR Site Estuary

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