This publication is based on a study conducted concurrently across six countries, namely; Ethiopia, Kenya, Madagascar, Malawi, Rwanda and Tanzania, in Africa. The study sought to identify agricultural water management (AWM) technologies and practices at project-scale in each country, which have scope for improving crop productivity and out-scaling regionally. The technical viability and economic returns of the interventions at farmer level were quantified. Conducted by paired country-research teams, 18 project sites (three study sites per country) were assessed. The findings are presented in this publication as 19 scientific papers by 16 co-authors. This publication is meant to inform, educate and enhance the reader's knowledge on the positive aspects of AWM development and investments in Africa.