1. Program XXVIII Ph.D. student meeting, Organised by the Hydrogeology Group, Freie Universitaet Berlin, Germany 7th and 8th June 2018.

2. Meeting of the German Association for Hydrogeology (FH-DGGV-Conference), Ruhr Universitaet Bochum, Germany, 21^st to 24^th March 2018.

3. 25^th Humboldt India Project Workshop, Organised by the Institute of Asian and African Studies, Humboldt University, 9^th February 2018.

4. Inception Workshop on “Underground Taming of Floods for Irrigation (UTFI)” Organized by International Water Management Institute, NASC Complex, Pusa, New Delhi, India 10-12 February 2015.

5. Groundwater Modelling Workshop, Organized by International Water Management Institute in collaboration with National Institute of Hydrology, Roorkee, India held at New Delhi, India, 31^st July 2014.

6. Catchment Management Planning Study Workshop, Organized by World Bank and the Department of Land resources, Government of India, New Delhi, 22^nd and 23^rd May 2014 (Invited as expert member).

7. Workshop of the project on Indo Gangetic Groundwater: resilience to the climate and abstraction, DFID- funded project, New Delhi, India, 4^th to 7^th November 2013.

8. 3^rd Annual agrohydrology and spatial analysis science meeting of the International Water Management Institute, World Agroforestry Centre, ICRAF, Nairobi, Kenya, 11^th to 14^th June 2013.

9. International workshop on “Water problems to water solutions: Research needs assessment for the Eastern Gangetic Plains”, IWMI, New Delhi, India, 7^th and 8^th May 2013.

10. Author workshop on “How to write for and get published in scientific journals and publish manuscripts”, Anna University, Chennai, India, 29^th January 2013.

11. Indo-US workshop on Water Quality and Sustainability, IIT Madras, Chennai, India, 7^th to 11^th January 2013.

12. Training course on “Managed Aquifer Recharge: Methods, Hydrogeological requirements, Post and Pre-treatment Systems’, Anna University, Chennai, India, 11^th and 12^th December 2012.

13. Webinar on “Quantifying the effects of discharge on groundwater exchange and temperature in rivers” by Ms. Erin Bray, Bren School of Environmental Science and Management, University of California, 12^th September 2012.

14. “Leadership training for Researchers based on Thirukkural”, Seer7- Timeless Solutions, Anna University, Chennai, India, 18^th August 2012.

15. Training on “MAR practices in Switzerland” funded by European Commission, FP7-Collaborative project on “Enhancement of natural water systems and treatment methods for safe and sustainable water supply in India”, University of Applied Sciences and Arts, Basel, Switzerland, 14^th to 16^th May 2012.

16. HighNoon Spring School programme under EU funded project on “Adaptation to changing water resources availability in northern India with Himalayan glacier retreat and changing monsoon pattern”, Indian Institute of Technology-Delhi, New Delhi, India, 2^nd to 6^th April 2012.

17. Young Water Professionals Programme (2011), National Environmental Engineering Research Institute (NEERI), Nagpur, India, 22^nd January 2011.

18. One day National Workshop on ‘Recent Advances in Civil Engineering’ (RACE 2010), Tagore Engineering College, Rathinamangalam, Chennai, India, 5^th March 2010.

19. “Regional Workshop on Water Quality and Water Use Efficiency Issues in Tamil Nadu” (REWOWQE 2009), Central Ground Water Board, Chennai, India, 19^th and 20^th March 2009.

20. Seminar on “Rejuvenation of Water Bodies and Water Courses in Chennai Metropolitan Area”, Centre for Water Resources, Anna University, Chennai, India, 23^rd March 2009.

21. ‘Science in Everyday Life - Chennai Science Festival’ organised by the Department of Higher Education, Government of Tamil Nadu held at Anna University, Chennai, India, 19^th to 22^nd February 2009.

22. Workshop on ‘Thesis Writing for Research Scholars’, Centre for Empowerment of Women, Anna University, Chennai, India, 4^th and 5^th December 2008.

23. National Workshop on Environmental Sustainability (NWES 2008), SRM University, Kattangulathur, India, 5^th June 2008.

24. International Conference on Sustainable Solid Waste Management, Centre for Environmental Studies, Anna University, Chennai, India, 5^th to 7^th September 2007.

25. International Symposium on Cleaner Technologies and Environmental Management, Pondicherry Engineering College, Puducherry, India, 6^th January 2007.