described watershed at a distance of about 200 metres from the confluence of the rivers Niagak and Amoda; thence in a straight line to BP 25 on the right bank of the river Amoda (Ammodar), immediately above its confluence with the river Nyalidha, at a point about 1,600 metres southwest of the summit of the hill Akar; thence along the thalweg of the river Nyalidha to BP 26 upon the Nile-Congo watershed about 6.2 km west-southwest of the summit of the hill Akar and about 5.6 km south-southeast of the hill Utzi, close to the source of the river Omithameri. From this point the boundary follows the Nile-Congo watershed in a northerly direction to a point about 0.3 km south of the source of the river Kaia (Kaya) the tri-junction of the Uganda/Zaire/Sudan international boundaries; thence in a straight line to the source of the river Kaia (Kaya); thence along the thalweg of the river Kaia (Kaya), downstream to its confluence with the unnamed river which runs immediately south of Chei and Lodwa rocks, and then runs in a northerly direction; thence in an easterly direction in a straight line to a point on the western summit of the hill Kirwa, marked by a surface beacon; thence in a southeasterly direction in a straight line to the confluence of the rivers Adjika and Khor Nyaura (Nyawa); thence in a northeasterly direction in a straight line to a point on the top of J. Jalei, marked by a surface beacon; thence in an easterly direction to the source of the river Khor Kayo (Kayu), approximately 3/4 miles from J. Jalei; thence following the thalweg of the Khor Kayo to a point on the thalweg directly opposite the westernmost point of the foothills of the escarpment running northwest from Jebel Elengua; thence in a straight line to the westernmost point of the foothills; thence following the bottom of the foothills of this escarpment in a southeasterly, or such a line as shall exclude the riverain people below Nimule; thence following due east to the intersection of the thalweg of the river Bahr el Jebel (White Nile) with the thalweg of the river Unyama; thence along the thalweg of the river Unyuama, upstream, to a point on the thalweg along the latitude of Jebel Ebijo; thence following due east to the summit of Jebel Ebijo; thence following in the direction of Jebel Kakomera to the thalweg of the river Achwa; thence following the thalweg of the river Achwa, downstream, to the intersection of the thalweg and a straight line towards the village Lokai to the northernmost point of the bottom of Jebel Marokho; thence following the summit of Jebel Agu; thence following the summit of Jebel Ilala (Lwomwaka); thence in a straight line in a northeasterly direction to the hill (Jebel) Modole; thence following a straight line in a southeasterly direction to the most southeasterly foothills of Jebel Terenteinia; thence in a straight line in a southeasterly direction to a point on the summit of the hill (Jebel) Lonyili marked by a triangulation mark