Working Group on History of Irrigation, Drainage and Flood Control Working Group on Young Irrigation Professional Forum Working Group on Environmental Impacts of Irrigation, Drainage and Flood Control Working Group on Sustainable Use of Natural Resources for Crop Production Working Group on Development and Management of Irrigation Systems Working Group on On – Farm Irrigation Systems Working Group on Drainage Working Group on Participatory Irrigation Management Working Group on Comprehensive Approaches to flood Management Working Group on Irrigated Agriculture Under Drought and Water Scarcity Working Group on Use of Poor Quality Water for Irrigation Working Group on Irrigation and Drainage Performance Asaessment