This paper reports on a detailed sociological study carried out as the NGO (or change agent) was completing three-year projects in two sites, Nagadeepa and Pimburettewa. The study describes the change agent's strategy, and analyzes its impact and the perceptions of farmers and government officials regarding its impact. The case study is placed in a wider context, in terms of both the participatory management policy of the Government of Sri Lanka, and the lessons learned that are relevant for NGOs working in other countries as well.

Financial and human resources : irrigation investment trends in Sri Lanka, implication for policy and research in irrigation management;organizational dynamics in a corporate-type irrigation organization, and analysis of the national irrigation administration in the Philippines;system turnover to farmers in the Philippines;management training through special awards;reinforcing management at system level: a comparativestudy of farmer-managed systems in northern Pakistan;irrigation management for crop diversication;studies on rice-based irrigation systems management in Bangladesh;emerging issues and trends:issues in conjunctive management of groundwater and surface irrigation systems in Punjab, Pakistan, an initial assessment;salinity in Punjab watercourse commands and irrigation systems operations;application of mathematicalmodels for simulation of canal operations at Kirindi Oya, Sri Lanka, preliminary results;towards better performance:performance of new irrigation settlement schemes, a case study of kirindi Oya, Sri Lanka;performance of secondary canals in Pakistan Punjab, research on equity andvariability at the distributary level.

Irrigation system performance assessment and diagnosis. performance, performance indicators and performance frameworks. Design-management environments and irrigation system management objectives. Performance in fixed division systems. Performance in gated division systems. Lessons learned from the case studies. Proposition for improving performance. Sustaining irrigation performance.