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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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Title Cost Effectiveness of Rainwater Harvesting for Groundwater
Recharge in Micro-Watersheds of Kolar District of India: The Case
Study of Thotli Micro-Watershed
 
Creator Nagaraj, N
Pradhani, U
Chengappa, P G
Basavaraj, G
Kanwar, R
 
Subject Watershed management
 
Description 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.
 
Publisher Agricultural Economics Research Association
 
Date 2011
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/5447/1/Cost%20Effectiveness%20of%20Rainwater.pdf
Nagaraj, N and Pradhani, U and Chengappa, P G and Basavaraj, G and Kanwar, R (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, 24. ISSN 0974-0279