Question: where does the blue nile river start and end
Answer: Blue Nile Blue Nile in Bahir Dar Country Ethiopia Physical characteristics Main source Lesser Abay / Lake Tana River mouth Confluence with White Nile in Khartoum , Sudan , forming main branch of Nile River Length 1,450 km ( 900 mi ) Discharge Average rate : 1,548 m / s ( 54,700 cu ft / s ) Basin features Basin size 325,000 km ( 125,000 sq mi )