INDIA WATER WEEK 2013. April 9, 2013, New Delhi. SESSION S3: WATER USE EFFICIENCY OF IRRIGATION SYSTEM. IN SEARCH OF WAYS FOR IMPROVING THE TANK IRRIGATION SYSTEMS. R.VENKATASAMY Programme Advisor, DHAN Foundation, Madurai, INDIA. Basics of Irrigation Tanks in India.
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INDIA WATER WEEK 2013
April 9, 2013, New Delhi
WATER USE EFFICIENCY OF IRRIGATION SYSTEM
IN SEARCH OF WAYS FOR IMPROVING THE TANK IRRIGATION SYSTEMS
DHAN Foundation, Madurai, INDIA
Earthen bunded small water harvesting structures formed in natural depressions of land to catch and store rainfall run-off and soil during intensive spells of monsoon rainfall facilitating multiple uses.
Ingeneously formed by native rulers & Chieftains over the past several centuries
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
Size distribution of tanks
Panoramic Remote Sensing Map of Cascades of Irrigation Tanks in TN
Declining trend of tank irrigation in India (%):
Declining trend of tank irrigation in South Indians States (%):
1.Tank rehabilitation programs:
Southern states started rehabilitating the tanks after late 1980s.Though planned well, actual execution focused mainly on structural improvements. Relying on user’s co-operation rather than their participation.
Exclusive research on tank irrigation and tank-fed agriculture for enhancing crop productivity to offset the loss during the low rainfall years.
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