The Abay River (Blue Nile once in the Sudan) is vital to the livelihood of Egypt. The Abay River, the most significant tributary of the Nile, contributes over 85% of the Nile's streamflow. Though shorter than the White Nile, 59% of the water that reaches Egypt originates from the Ethiopian highlands as a form of Abay River then as the Blue Nile branch of the great river. The river is also an important resource for Sudan, where the Roseires Dam and Sennar Dams produce 80% of the country's power. These dams also help irrigate the Gezira Scheme, which is most famous for its high quality cotton. The region also produces wheat and animal feed crops.