CTA Seminar Closing the Knowledge Gap: INTEGRATED WATER MANAGEMENT FOR SUSTAINABLE DEVELOPMENT By Maimbo Mabanga Malesu St...
Outline  <ul><li>Problem Analysis </li></ul><ul><li>Understanding water scarcity, green and blue water concepts </li></ul>...
Location of ACP Region <ul><li>The ACP constitute 79  countries (48 African, 16 Caribbean and 15 Pacific) – falling in tro...
Background for the ACP <ul><li>Main objectives:  </li></ul><ul><li>Sustainable development and poverty reduction within me...
Major Challenges in ACP <ul><li>Poor access to and availability of water in the region due to  inadequate water harvesting...
Agric. Water Management as a major entry point to livelihood enhancement To exploit agric. potential in curbing hunger and...
Global depiction of water scarcity IWMI, 2009
Do we have adequate investments to cope with Water Scarcity?
How about at Community level?
The Policy Dilemma: Where do Governments target investments?
Can we boost per-capita water storage & Productivity in the ACP?
Technological considerations on Water Scarcity  <ul><li>Bio-physical and socio-economic parameterization. </li></ul><ul><l...
Understanding Rainwater Partitions is starting point for boosting water productivity
Source: SEI 2006
Assessment of RWH in Zanzibar +  LOBBYING (MDG Centre, 2007)
RW assessments: Case example for Sub-Saharan Africa African countries in the ACP are the ones where rainfall exceeds 200mm...
RWH Domains (Mati et al, 2006) Runoff Ephemeral rivers
Climate modeling –P/PET Source: MINAGRI - 2010
 
Source: MINAGRI - 2010
MINAGRI - 2010
Promising Water Harvesting Technological Options
INSITU RWH  TECHNIQUES Earthen Bunds Zai-pits
Conservation Agric.
9 ponds/Km2 in Lare Kenya  Run-off Catchment Systems +  Private Sector
By June 2010 RADA had constructed  >400 X 120 m 3   ponds in 10 districts of Rwanda
Best Practices Scaling Up Sites
CHECK DAMS + Surface irrigation in Zanzibar
Roof Catchment Systems + Drip Irrigation
Increased Awareness  India pioneers RWH, 2004 AFRICA: RWH could solve water shortages, 2006
Conclusions – Put Simple <ul><li>We need to change the way we think -  STOP  Blue water  approaches to agric. water mgt. T...
The World Agroforestry Centre United Nations Avenue, Gigiri P.O Box 30677 Nairobi, 00100, Kenya Phone: +254 20 722 4000 Fa...
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Strategies for increasing agricultural water productivity in physically and economically water-scarce regions - Mr Maimbo Malesu, World Agroforestry Centre, Kenya

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Strategies for increasing agricultural water productivity in physically and economically water-scarce regions - Mr Maimbo Malesu, World Agroforestry Centre, Kenya

  1. 1. CTA Seminar Closing the Knowledge Gap: INTEGRATED WATER MANAGEMENT FOR SUSTAINABLE DEVELOPMENT By Maimbo Mabanga Malesu Strategies for Increasing Agricultural Water Productivity in Physically and Economically Water Scarce Region
  2. 2. Outline <ul><li>Problem Analysis </li></ul><ul><li>Understanding water scarcity, green and blue water concepts </li></ul><ul><li>Tested approaches/tools in agric. Water mgt </li></ul><ul><li>Highlights on proven Technological innovations </li></ul><ul><li>Conclusions </li></ul>
  3. 3. Location of ACP Region <ul><li>The ACP constitute 79 countries (48 African, 16 Caribbean and 15 Pacific) – falling in tropical and sub-tropical zones </li></ul><ul><li>  </li></ul>
  4. 4. Background for the ACP <ul><li>Main objectives: </li></ul><ul><li>Sustainable development and poverty reduction within member states, as well as greater integration into the world's economy. </li></ul><ul><li>  </li></ul><ul><li>Population in 2002 : </li></ul><ul><li>727 million (15% of developing countries). 94% of ACP pop in Africa, 5% in the Caribbean and 1% in the Pacific countries. </li></ul><ul><li>Per capita GDP: </li></ul><ul><li>US$ 100 - US$ 9000. Agriculture which is relied on for income and employment accounts for 16% of the GDP. </li></ul>
  5. 5. Major Challenges in ACP <ul><li>Poor access to and availability of water in the region due to inadequate water harvesting infrastructure </li></ul><ul><li>In 2001, only 5% of ACP arable land was irrigated and 15% fertilizer used; </li></ul><ul><li>Increased prevalence of HIV/AIDS reduced labour availability & hence farm productivity. </li></ul><ul><li>Pop increase & Extremely low agricultural production – less than one tonne per hectare due to intra-seasonal dry spells and drought; </li></ul><ul><li>Poor management of rainwater – flooding, erosion, ecosystems pollution among others. </li></ul>
  6. 6. Agric. Water Management as a major entry point to livelihood enhancement To exploit agric. potential in curbing hunger and undernourishment; technical, economic and human resources must be mobilized to facilitate water management through RWH & irrigation. However, the ACP region faces physical and economic water scarcity denoting both availability and access quagmires and must institute strategies to address these challenges.
  7. 7. Global depiction of water scarcity IWMI, 2009
  8. 8. Do we have adequate investments to cope with Water Scarcity?
  9. 9. How about at Community level?
  10. 10. The Policy Dilemma: Where do Governments target investments?
  11. 11. Can we boost per-capita water storage & Productivity in the ACP?
  12. 12. Technological considerations on Water Scarcity <ul><li>Bio-physical and socio-economic parameterization. </li></ul><ul><li>Assessment of rainwater partitions and their respective quantification at regional, national, watershed and plot scale. </li></ul><ul><li>Assessment of domestic, agricultural and environmental water needs/demands at national, watershed, homestead and farm scale. </li></ul><ul><li>Identification and mapping of rainwater domains and respective technologies. </li></ul><ul><li>Spatial based designs of appropriate rainwater technologies in respect to the technological mapping. </li></ul>
  13. 13. Understanding Rainwater Partitions is starting point for boosting water productivity
  14. 14. Source: SEI 2006
  15. 15. Assessment of RWH in Zanzibar + LOBBYING (MDG Centre, 2007)
  16. 16. RW assessments: Case example for Sub-Saharan Africa African countries in the ACP are the ones where rainfall exceeds 200mm/yr within SSA
  17. 17. RWH Domains (Mati et al, 2006) Runoff Ephemeral rivers
  18. 18. Climate modeling –P/PET Source: MINAGRI - 2010
  19. 20. Source: MINAGRI - 2010
  20. 21. MINAGRI - 2010
  21. 22. Promising Water Harvesting Technological Options
  22. 23. INSITU RWH TECHNIQUES Earthen Bunds Zai-pits
  23. 24. Conservation Agric.
  24. 25. 9 ponds/Km2 in Lare Kenya Run-off Catchment Systems + Private Sector
  25. 26. By June 2010 RADA had constructed >400 X 120 m 3 ponds in 10 districts of Rwanda
  26. 27. Best Practices Scaling Up Sites
  27. 28. CHECK DAMS + Surface irrigation in Zanzibar
  28. 29. Roof Catchment Systems + Drip Irrigation
  29. 30. Increased Awareness India pioneers RWH, 2004 AFRICA: RWH could solve water shortages, 2006
  30. 31. Conclusions – Put Simple <ul><li>We need to change the way we think - STOP Blue water approaches to agric. water mgt. Think GREEN . </li></ul><ul><li>Policy change backed with innovative technical planning, sound investment and monitoring. </li></ul><ul><li>Support capacity building at all levels: Professional, technical and community. </li></ul><ul><li>Increase Awareness: Spread the news through ICTs!!!!! </li></ul>
  31. 32. The World Agroforestry Centre United Nations Avenue, Gigiri P.O Box 30677 Nairobi, 00100, Kenya Phone: +254 20 722 4000 Fax: +254 20 722 4001 Web: www.worldagroforestry.org Email: icraf@cgiar.org THANK YOU – Green water is the way out

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