Abstract
Rainwater harvesting (RWH) is a novel way for developing countries to construct and maintain long-term water supply systems. As a result, this review article draws on actual findings and lessons learned from various places in Ethiopia to assess the country's achievements and opportunities when it comes to RWH, as well as to guide future alternatives toward its sustainability. RWH acts as a tie throughout the rainy season's dry spells, benefiting human and livestock consumption as well as crop production through irrigation. So, for the victory of well-organized rain water collection, watershed treatment, seepage and evaporation control, soil and water conservation, conservation tillage, and integration of low-cost water lifting techniques and family drip systems should all be feasible. Given that the country is not further modernized, it has ancient dated experiences on the operation and exploitation of RWH systems. Aside from financial inadequacies, historical and political instability, lack of understanding among farmers, and resistance to new technologies, the country has opportunities and has made some progress on rainwater harvesting systems. In general, rainwater harvesting could enable smallholder farmers to diversify their crops, thereby enhancing household food security, dietary status, and economic return. In addition, the much-needed green revolution and climate change adaptations should combine rainwater harvesting ideas with agronomic principles in the country. More work is needed to strengthen indigenous practices and share best practices to a larger scale.