International Science Community Association International Research Journal of Environmental Sciences 2319 - 1414 6 4 2017 04 22 Impact of rehabilitation on minor irrigation tank performance in Vavuniya district, Sri Lanka 48 50 EN Srinivasa Rao Vattikonda 1 Department of Zoology, Nizam College, Osmania University, Hyderabad, Telengana State, India Sabita Raja Sangam 2 Department of Zoology, Nizam College, Osmania University, Hyderabad, Telengana State, India Prabhakaran P.* 1 Department of Zoology, Ayya Nadar Janaki Ammal College, Virudhunagar District, Sivakasi-626124, India Rajan M.K. 2 Department of Zoology, Ayya Nadar Janaki Ammal College, Virudhunagar District, Sivakasi-626124, India I. Vásquez-García 1 Universidad Autónoma de Chapingo, C.P. 56230, Texcoco, México L. Mohedano-Caballero 2 Universidad Autónoma de Chapingo, C.P. 56230, Texcoco, México V.M. Cetina-Alcalá 3 Colegio de Postgraduados Campus Montecillo, C.P. 56230, Texcoco, México Bhagwat G. Rashinkar 1 Department of Geography, Abasaheb Kakade College, Bodhegaon, Maharashtra, India Digambar S. Samarth 2 Department of Geography, Taywade College, Koradi, Nagpur, Maharashtra, India Pramod A. Wadate 3 Department of Geography, Bar. Sheshrao Wankhede Mahavidyalaya, Mohapa, Kalmeshwar, India Atun Roy Choudhury 1 Department of Civil Engineering, Annamalai University, Annamalainagar, Tamil Nadu 608002, India Arutchelvan V. 2 Department of Civil Engineering, Annamalai University, Annamalainagar, Tamil Nadu 608002, India Asha B. 3 Department of Civil Engineering, Annamalai University, Annamalainagar, Tamil Nadu 608002, India K. Satyavathi 1 Department of Botany, Andhra University, Visakhapatnam – 530003, AP, India Sandhya Deepika D. 2 Department of Botany, Andhra University, Visakhapatnam – 530003, AP, India S.B. Padal 3 Department of Botany, Andhra University, Visakhapatnam – 530003, AP, India M.S.R. Akther 1 Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka > Short Communication 2017 2 17 2017 04 22 A pilot study was conducted to assess the impact of rehabilitation on minor irrigation tank performance in Vavuniya district, taking 60 rehabilitated and 55 non-rehabilitated minor irrigation tanks as sample. Tank performance index (TPI) and production performance indicator (PPI) were used as indicators of the tank performance. If the tanks were not maintained in terms of technical activities such as sluice repair and replacement, channel lining and bund strengthening within last 10 years, then those tanks were classified as non rehabilitated tanks otherwise rehabilitated tanks. Average TPI and PPI value for all agricultural seasons in three years from the year 2010 to 2012 between rehabilitated and non-rehabilitated tanks were tested using 2t- test. The average TPI and PPI values during maha season from the year 2010 to 2012 between rehabilitated and non-rehabilitated tanks were significantly different at 5% significance level. Even though the tank rehabilitation is not financially feasible and uneconomical it has lot of environmental and ecological concerns such as habitat for biodiversity, flood protection and contributing groundwater recharge. Hence, some alternate strategies focusing on community participation could improve the tank performance and the sustainable water resource management. Further an in depth investigation is essential to identify the appropriate strategies for tank rehabilitation and its management. Copyright@ International Science Community Association