This document summarizes the objectives and approach of the Nile Basin Development Challenge (NBDC) research being conducted in Ethiopia. The research will focus on improving rainwater management systems to alleviate poverty and promote sustainable development. It will examine issues related to rainwater management, crop/livestock production, and minimizing land degradation. The research involves multiple projects focused on learning from past practices, developing integrated rainwater strategies, targeting and scaling innovations, and assessing impacts. It will use a collaborative approach, building partnerships across organizations and sectors to facilitate knowledge sharing and ensure research outcomes benefit communities.