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at Istanbul, Turkey 16-22 March 2009

Title:. Need for sustaining the multiple uses of Traditional Tank Irrigation systems in South India. Theme – 3 : Managing and Projecting water resources and their supply system to meet Human and Environmental needs.

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at Istanbul, Turkey 16-22 March 2009

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  1. Title: Need for sustaining the multiple uses of Traditional Tank Irrigation systems in South India. Theme – 3 : Managing and Projecting water resources and their supply system to meet Human and Environmental needs. Topic 3.2 : Ensuring adequate water resources and storage infrastructures to meet agricultural, energy and urban needs. Session 3.2.2 Organised by Presented by 5th World Water Forum R.Venkatasamy Programme Officer DHAN Foundation, Madurai, INDIA at Istanbul, Turkey 16-22 March 2009

  2. Basics of Irrigation Tanks in India Earthen bunded small water harvesting structures formed in natural depressions of land to catch and store surface run-off during intensive spells of monsoon rainfall are known as “tanks” in South India. Ingeneously formed by native rulers & Chieftains over the past several centuries

  3. Tank System Components - Schematic view

  4. Toposheet showing the Tank population 388 Tanks in an Area of 104.66 sq.km There exist about 1,40,000 tanks in South India

  5. Panaromic Remote Sensing Map of Cascades of Irrigation Tanks in India Source: NRSA

  6. Nature of Tank Systems • Smaller in size and larger in number. Amenable for efficient de-centralised management. • Mostly in semi arid regions of low / medium rainfall with undulating topography. • Earlier, owned, maintained and managed by village institutions by collecting revenue through their “multiple uses”. Now owned and maintained by Government. • Called synonimously by different names in local languages. British Engineers named them as “Irrigation tanks” although they have multiple uses.

  7. BENEFITS FROM A COMPREHENSIVE TANK SYSTEM MANAGEMENT Crop yield doubled (2 assured crops a year) Increased tree cover Employment Generation Migration of birds stopped & immigration encouraged Dairy development Improved nutrition (more food, more milk) Benefits from a Healthy Tank System Cultural life improved Fisheries development Increased green and dry and fodder Sustained availability of water for drinking and agriculture Fertility of the dry-lands improved Food Security Effective Soil Conservation Ground water situation improves electricity will be saved

  8. Multiple uses of Tank Systems

  9. Significance of Tank Systems in Water Use

  10. A Typical Tank Cascade

  11. "These are the monuments of real Kings, who were the fathers of their people; testators to a posterity which they embraced as their own. These are the grand sepulchres built by ambition……..…to extend the dominion of their bountybeyond the limits of nature, and to perpetuate themselves through generations, the guardians, the protectors, the nourishers of mankind". Edmund Burke, a British Engineer on irrigation tanks in South India (1785)

  12. Present status of Tanks – The Problems

  13. Comparison of Tank Irrigated Area, 1952-53 to 1999-2000-India

  14. Revival of Tank Systems – The Solution

  15. Rehabilitation / Revival of TanksA Concept Past Present Future Use Use Silted Encroach-ment eviction & Renovation Encroached & disused Silted & Desilted by People Use

  16. 1. Redefining the Role of State

  17. 2. Redefining the Role of Research & Resource Institutions

  18. 3. Redefining the Role of NGOs

  19. 4. Redefining the Role of People Institutions / community institutions

  20. DHAN Foundation and its role on Tank Conservation For More visit www.dhan.org

  21. Alternative solution Remains in the concept . . GLOBAL THINKING FOR LOCAL ACTION Let us discuss . . Thank You

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