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Cost Effectiveness of Rainwater Harvesting for Groundwater Recharge in Micro-Watersheds of Kolar District of India: The Case Study of Thotli Micro-Watershed

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  • Nagaraj, N.
  • Pradhani, Umesh
  • Chengappa, P.G.
  • Basavaraj, G.
  • Kanwar, Ramesh S.

Abstract

This study has estimated the supply augmentation of groundwater recharge due to creation of water harvesting structures and has assessed the cost-effectiveness of rainwater harvesting for groundwater recharge on watershed basis in one of the sub-watersheds of the Kolar district, Peninsular India — a typically hard-rock area. The study is based on the primary data for the year 2008-09 collected from a sample of 90 farmers having irrigation bore-wells in the selected watershed named Thotli. The study has indicated that the annual draft of irrigation water exceeds the annual recharge, causing a negative balance. On an average, the returns per rupee investment have been found to be ` 1.80 on farm pond, ` 1.78 on recharge pit and ` 1.39 on field bund. The cost incurred to impound a metre cube of water has been found as ` 3.01 in the case of field bund, where estimated recharge benefit is 5.6 m3, ` 1.67 /m3 in the case of recharge pit (with an estimated recharge benefit of 720 m3), and ` 1.33 /m3 in the case of farm pond (recharge benefit of 1350 m3). The discounted cost-benefit analysis of the investment on water harvesting structures has indicated that the investment on water harvesting structures is cost-effective and financially-viable.

Suggested Citation

  • Nagaraj, N. & Pradhani, Umesh & Chengappa, P.G. & Basavaraj, G. & Kanwar, Ramesh S., 2011. "Cost Effectiveness of Rainwater Harvesting for Groundwater Recharge in Micro-Watersheds of Kolar District of India: The Case Study of Thotli Micro-Watershed," Agricultural Economics Research Review, Agricultural Economics Research Association (India), vol. 24(2), December.
    • Handle: RePEc:ags:aerrae:118229
    DOI: 10.22004/ag.econ.118229
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    References listed on IDEAS

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    1. Nagaraj, N. & Chandrakanth, M. G. & Prathima, R., 2008. "Impact of water harvesting on groundwater recharge, productivity and net returns with integrated farming systems approach in eastern dry zone of Karnataka," Conference Papers h042931, International Water Management Institute.
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    Cited by:

    1. Nagaraj, N., 2013. "Rapporteurs' Report: Development of Dryland Agriculture: Technological, Institutional, Infrastructural and Policy Imperatives," Indian Journal of Agricultural Economics, Indian Society of Agricultural Economics, vol. 68(3), pages 1-16.

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    1. Nagaraj, N., 2013. "Rapporteurs' Report: Development of Dryland Agriculture: Technological, Institutional, Infrastructural and Policy Imperatives," Indian Journal of Agricultural Economics, Indian Society of Agricultural Economics, vol. 68(3), pages 1-16.

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    Agricultural and Food Policy;

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