In the Sheeb area in eastern Eritrea a Participatory Rural Appraisal(PRA) was carried out in two villages, one upstream and one downstreamof the ephemeral rivers Laba and Mai-ule. The objectives of the studywere to obtain a better understanding of farmer-managed spate irrigationsystems and to enable the local people to perform their own farmingsystem analysis. This paper describes the various PRA activities, suchas mapping, diagramming and ranking of problems, that were undertakenwith the participation of local people. The resource mapping revealedthat lack (...) of water and not scarcity of land is the main constraintaffecting the development of the spate irrigation system in the Sheebarea. When there is a lack of rainfall in the highlands of Eritrea,there are only few floods per year in the Sheeb area. The developmenttrend diagrams showed that the number of floods, the food production andthe prevalence of pests vary considerably over time. The livelihooddiagrams indicated that food, fodder, and water were only availableduring part of the year. In search of these resources, the farmers havedeveloped a livelihood strategy of seasonal migration to the highlandsof Eritrea. The PRA data collected in the two villages appeared to bevery useful for the preparation of community action plans in the entireSheeb area. (shrink)