Main Report of the detailed delineation, description, and prioritization of four of the investment projects located in the Abbay in Ethiopia that were identified by the 2007 Cooperative Regional Assessment (CRA) of watershed management in the Eastern Nile Basin. It contains profiles of four projects of manageable size (1000 – 2000 sq. km) while Annex 4.1,4.2,4.3 and 4.4 containing detailed Project Repots of the four watersheds were produced as separate documents. The initiative was supported by the NBI Institutional Strengthening Project funded by the Nile Basin Trust Fund managed by the World Bank (2008 – 2012).