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New Technologies to Facilitate the Planning Process to Manage Water Over-Exploitation

New Technologies to Facilitate the Planning Process to Manage Water Over-Exploitation. Prof Wim Bastiaanssen & Dr . Peter Droogers. Ttan. Balance inflow & outflow. income. expenditures. Expenditures exceeding income is not sustainable Reduce expenditures = reduce evapotranspiration.

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New Technologies to Facilitate the Planning Process to Manage Water Over-Exploitation

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  1. New Technologies to Facilitate the Planning Process to Manage Water Over-Exploitation Prof Wim Bastiaanssen & Dr. Peter Droogers

  2. Ttan Balance inflow & outflow income expenditures Expenditures exceeding income is not sustainable Reduce expenditures = reduce evapotranspiration Cheema – Ph.D. student TU-Delft

  3. Water ResourcesYemen Source: Worldbank study using public domain data Problem: Data is outdated, incomplete, inconsistent & sometimes contradictory

  4. TRMM validation over Pakistan • Reduce abstractions of groundwater • Quota on water use, well licences, stop subsidized diesel for pumps • Reduce crop ET by improved irrigation technologies • Reuse urban, industrial and irrigation water • Control agricultural areas • Control irrigated area (ha) • Control cropping intensity • Abandon certain crops • Land retirement • Rainwater harvesting • Local infiltration dams • Constructing more reservoirs • Crop productivity improvement • New seeds • Better fertilizers • Optimal water supply • Desalinization • Import food • …… Manifold solutions exist Cheema – Ph.D. student TU-Delft

  5. Remote sensingWater basinmodelsGroundwater flow modelsClimate modelsWater accountingGIS dataSmart phoneSMS messages Which tools are available to assist planning ? Cheema – Ph.D. student TU-Delft

  6. Models are Required for Future Projection FUTURE: A Policies: A, B, C PAST FUTURE FUTURE: B FUTURE: C Observations Remote Sensing Simulation Models

  7. Many satellites provide free data

  8. TRMM validation over Pakistan Changes 2006 to 2009 Situation 2006 Satellite Image of Irrigation Systems Siham Cheema – Ph.D. student TU-Delft

  9. Actual evapotranspiration Abyan

  10. Yearly Rainfall TRMM Satellite 1998 to 2012 Cheema – Ph.D. student TU-Delft

  11. RainfMM validation over Pakistan Rainfall trend 1998 to 2012 Cheema – Ph.D. student TU-Delft

  12. Upland Processes Modellingwater basins Channel/Flood Plain Processes

  13. Modelling Recharge and Runoff for period 2000-2009 (SPHY model)

  14. TRMM validation over Pakistan Remote sensing for calibrating hydrological model Hydrological model Remote sensing Cheema – Ph.D. student TU-Delft

  15. Change in precipitation (present vs. 2050) CMIP3 – average 9 GCMS - 2040-2050 relative to 2000-2009 So somewhat more rain in some areas, but….

  16. Change in Evapotranspiration (present vs. 2050) , but…. evaporation also higher and demand for irrigation even much larger

  17. Water accounting

  18. Smart phones Local farmers being supported

  19. Water productivity gap Morocco (Doukkala)

  20. Reduce irrigated area Saudi Arabia Ban on wheat

  21. Water credit card Italy Pump stops working if water credits are finished

  22. China Plain: ET management

  23. We need information to answer the following questions: • How much water do we have ? • Where is the water going to ? • Who is using the water ? • What are the recharge mechanisms ? • What is the local sustainable aquifer yield ? • What is the remaining aquifer life ? • Can we introduce water savings without hampering crop production ? • Geographical and hydrological data provides the knowledge base Cheema – Ph.D. student TU-Delft

  24. Tools create data at our fingertips Share the data via the cloud !

  25. Thank you !

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