Adressing Floods and Drought in GEF supported TDA/SAPs

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Adressing Floods and Drought in GEF supported TDA/SAPs

  1. 1. Adressing Floods and Drought in GEF supported TDA/SAPs IWC-7 October 2013 Peter Bjornsen, UNEP-DHI Centre
  2. 2. TDA Volta Basin Senegal River Basin Lake Chad Basin Orange-Senqu River Basin Danube river Basin São Francisco river Basin (DAB) Okavango River Basin Lake Victoria Basin Lake Tanganyika Lake Shkoder Pantanal Basin (in portuguese) Kura River Basin Lake Peipsi San Juan River Basin Bermejo River Basin Dnipro River Basin Niger River Basin Amazon river basin Tumen River Basin SAP X X X X X X X X X X X X X X X X X (X) X X X X X X X X X X X
  3. 3. Volta Basin Causes Flood events*: Above average rainfall, inapropriately used dams, unsustainable agriculture and mining, Illegal diversion of river channels for mining. Droughts : Increased water demand, deforestation, longer dry seasons, lack of transboundary coordination and efficient governance (also for floods). Impacts Events described Qualitatively Flood events: Changes in the Loss of infrastructure, overall aggregate Loss of livelihoods, volume Droughts: available, and Poverty, changes in the Increased migration, temporal and Social instability. seasonal Land degradation, distribution of Biodiversity loss. water availability Coastal ecosystem erosion; observed. Water Aquatic invasive species; shortages have Increased sedimentation, become more Loss of soil and vegetative intense and less cover, predictable. Deteriorating water quality. Monitoring Develop and establish national/ regional landbased activities data and information management system Develop capabilities of GIS use/Monitor supply and quality of water in major rivers/
  4. 4. Climatic variability and change
  5. 5. Multiple challenges Floods Irrigation Domestic water Hydropower Drought
  6. 6. Why Decision Support Systems? Provide an opportunity to embed IT and analytical tools more thoroughly in WR agencies’ workflow; Provide a technical platform for collaboration internally and externally; The DSS concept matches well with implementation of IWRM processes by WR agencies
  7. 7. Information managemen t Emergency management Operational forecasting Real-time TDA Screening and assessment SAP Climate change adaptation Prevention and mitigation
  8. 8. Typical Technical Frameworks of DSSs ….with an array of underlying generic tools
  9. 9.  Linkage to observation networks and data sources;  Formulation of appropriate data collection programs;  Data processing & analysis tools;  Procedures for data transfer & sharing;  Approve / quality control of data / information
  10. 10. Main Components of DSSs Assessments of current situation; Evaluating planning scenarios; Climate change impacts & adaptation; Water allocation procedures; Disaster management ;
  11. 11. Structured analysis and use of data; Understanding complex cause-effect relationships; Consistent scenario modelling Planning oriented models Process oriented models
  12. 12. Main Components of DSSs Sharing of data / information ; Publishing plans / reports; Stakeholder involvement; Providing learning tools.
  13. 13. Tools Down scaling Adapters Spread Sheets Indicators Multi Criteria Analysis Simulation codes Scripting WEB Publishing Scenario Analysis Access Control Time Series Processing Optimisers Scheduling GIS Data Bridges Visualisation
  14. 14. How does DSS fit with IWRM at river basin level ? Recognition Identify problems and needs Public awareness Assessments Course of actions Draft Planning Coordination Reaching agreements Final basin Plan Implementation Monitoring & evaluation

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