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The potential benefits of Green Water Credits

The potential benefits of Green Water Credits. Part 2: Quantifying profits for downstream water users. Peter Droogers Wilco Terink Johannes Hunink Sjef Kauffman Godert van Lynden. WHAT to quantify?. Supply  Biophysicial assessment Supply vs. Demand  Cost-benefit analysis.

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The potential benefits of Green Water Credits

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  1. The potential benefits ofGreen Water Credits Part 2: Quantifying profits for downstream water users Peter Droogers Wilco Terink Johannes Hunink Sjef Kauffman Godert van Lynden

  2. WHAT to quantify? • Supply Biophysicialassessment • Supply vs. Demand Cost-benefitanalysis

  3. Overall Benefit-cost analysis

  4. Recall: changes in supply

  5. Required: an integrating tool • Impact of changes in water-soil dynamics on: • upstream • rainfed improved production • downstream • hydropower • domestic water supply • irrigation • Benefit-cost analysis • Integrations tool: WEAP

  6. WEAP Tool

  7. WEAP: Validation

  8. Changes reservoir storage

  9. Results: Reduction in water shortage

  10. Results: Increase in hydropower

  11. Results: Increase in Benefits

  12. Results: Benefit-Cost Analysis • 20% of area ~ 100,000 smallholders

  13. Discussions, Conclusions

  14. Wrapping up • GWC beneficial for: • upstream • downstream • Analysis tools: • SWAT: (upstream) supply • WEAP: (downstream) demand • Steps • Understand current situation • Explore options • GWC • Biophysical component • Socio-economics • Institutional • Financial

  15. Discussion / conclusions • Smaller focus area • Current study: 1.8 million ha total; 0.5 million ha rainfed • Target areas • C/B analysis • Definition of GWC options • Practical WOCAT expertise in implementation phase • Monitoring network • Update according to recently finished survey • Indicators to evaluate effectiveness of implementation

  16. ThankYou

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