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Development of Strategies for Irrigation Water Management Under Tank Environment in Semi-Arid Tropical India – A Case Study

Author(s): Integrated Water resources management
Congress: 2008
Author(s): Satishkumar Umapathy, Dr. G.S. Dasog, Premanand.D
I am associated with rsearch projects on the areas tanks ( small traditional reservoirs) irriagtion maangement Watershed management

Keyword(s): Tanks, participatory Irrigation management
AbstractKamataka State being the second largest semi-arid zone in India, has gross irrigated area of only 26 % out of its gross cropped area( 9.3 M ha) The role of irrigated agriculture is critical in increasing its growth with the potential of more than 36, 000 small to medium sized tanks to expand tank-based irrigation especially in low rainfall districts. Traditional tank systems are poised at gaining morphologic advantages and at the same time, ephemeral nature of runoff availability has posed challenges in meeting irrigation demand . In the past, the Public sector approaches to natural resource management in India have historically tended to ignore community involvement and participation and the need to integrate land and water management. The World bank credited Community Based Tank management project through the nodal water management improvement society of Government of Karnataka with complementary role of State Agricultural universities and Non –governmental organizations has provided a new dimension in improving productivity. One of the case studies ( Tuntapura tank )was carried out in part of northern Dry zone ( mean rainfall of about 630 mm ) of Karnataka with the objectives of i) building local level ownership and responsibility for the water management at times of inconsistent storage levels ii) fostering an integrated approach for developing tank-specific plans in improvising tank infra structure and distribution system. And iii) exploring the options for the linkage between improved water efficiency and increases in agricultural Productivity. The Integrated Tank Development Plan(ITDP ) had been prepared on behest of Tank Users group (TUG) in consultation presetting an assessment of problems and causes, sound technical analysis of the water resource system, social and environmental analysis, analysis of farming systems and alternatives, and a basic assessment of total water demand for all users in the system. The major interventions planned and executed were i) Implementation of viable and economical canal lining ii) imparting efficient controlled outlets iii) demonstrating cultivation of paddy with optimal water requirement iv) Enforcing contingent water allocation plan at the times of varied water storage availability v) Reclamation of saline and water logged areas. vi) Assessing and minim sing sediment inflow into the tank. Participatory approach yielded a success to an extent in planning and implantation phases withstanding minor impediments both from the point of hydrological variable situations and individual apprehensions and doubts in getting their due share at water crisis among. However, issues pertaining rationality of sustainable water use that being conveyed through training and demonstrations would be effective in continuing with the necessary objectives of TUG
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