Design elements of a proposed A.I.D. small-scale irrigation development project in West Java and Eastern and Western Nusa Tenggara, Indonesia, are presented. The report analyzes the proposed project's overall institutional and social setting, provides a technical analysis of irrigation technology in Indonesia, describes the agrometeorological and social characteristics of the three project areas, and outlines proposed project activities in these areas and a project implementation plan. A 3-part project strategy is proposed: (1) Augment the rainy and dry season water supply in order to mitigate hydrological variations in rainfall-runoff processes that make irrigation water supply uncertain. (2-3) Alleviate the burden on the Public Works Department by making it responsible for basic water supply functions, while relying on village-level farmer organizations to operate and maintain the systems. Appendices include a list of related technical manuals and guidelines and an economic comparison of alternative run-of-the-river diversions.