Bahr El Ghazal.
North.The southern frontier of Kordofan and thence westwards up the Bahr El Arab to the French frontier.
East.The western boundary of the Upper Nile Province between Lake No and N. lat. 5° 30′.
South.The frontier of the Lado Enclave and thence westwards along the Congo-Nile watershed.
West.The Congo-Nile watershed and the French frontier.