Book excerpt: Following the collapse of the Soviet Union, the newly independent countries of Central Asia undertook reforms of their agrarian sectors with varying degrees of speed and depth. In general, the reforms consisted of changes in the nature of land tenure and in the decentralization of irrigation and drainage management. Through these reforms, former state management institutions were abolished leaving an institutional vacuum that presented an opportunity for the development of local-level management institutions. However, the historical context of the region poses particular challenges that may impede users to capitalize on such opportunities. Water User's Associations or the local administration manage irrigation and drainage systems at the local level. Water User Associations represent international donor-driven initiatives to introduce equitable, democratic and participative institutions for irrigation and drainage management. There are indications that those informal institutions and traditional modes of cooperation that survived the Soviet era are gaining importance. This study maps out the various institutions, defined as "rules in use", that farmers employ to manage the irrigation and drainage system in the Ferghana Valley within the context of changing land and water rights. The key objectives of the study are (1) to understand the importance of irrigated water for local livelihoods in the research area; (2) to explore certain characteristics of the formal and informal institutions through which farmers manage irrigation and drainage systems; and (3) to depict ways in which "collective action" in irrigation water management can be strengthened. The methodology consists of a synthesis of existing literature and fieldwork in the Ferghana Valley in Kyrgyzstan, from April 30 until 31 July, 2008. The results of the research are presented as a case study.