The headstreams of the Bakhoy rise between 11° 30' and 12° N.
Its principal affluent, the Baule (Red river), and its headstreams rise farther east on the northern slopes of the hills which above Bamako shut in the Niger.
He explored (1894-1895) the headstreams of the Shebeli, reached Lake Rudolf, and eventually descended the Tana river to the sea, his journey thus taking him through southern Somaliland.
Of the three headstreams, the Web, the Ganale and the Daua, the Ganale (or Ganana) is the central river and the true upper course of the Juba.
Below the mountainous region of the headstreams the Juba and its tributaries flow through a country generally arid away from the banks of the streams. The soil is sandy, covered either with thorn-scrub or rank grass, which in the rainy season affords herbage for the herds of cattle, sheep and camels owned by the Boran Gallas and the Somali who inhabit the district.
Dundas of the British navy, while in1892-1893its headstreams were explored by the Italian officers, Captains Vittorio, Bottego and Grixoni, the former of whom disproved the supposed connexion of the Omo (see Rudolf, Lake) with the Juba system.
Thus a well-marked depression in the Cotteswolds brings the head of the (Gloucestershire) Coln, one of the head-streams of the Thames, very close to that of the Isborne, a tributary of the upper Avon; the parting between the headstreams of the Thames and the Bristol Avon sinks at one point, near Malmesbury, below 300 ft.; and head-streams of the Great Ouse rise little more than two miles from, and only some 300 ft.
Its headstreams are in the highest part of the Drakensberg range, the principal source, the Senku, rising, at an elevation of more than 10,000 ft., on the south face of the Mont aux.
The other headstreams are S.E.
One series of its numerous headstreams traverses the Kikuyu plateau north of the Athi, while others flow down the southern and eastern slopes of Kenya.
In the western parts of the system they mostly go to feed the Kara-muren or the Cherchen-darya, while farther east they flow down into some larger self-contained basin of internal drainage, such as the Achik-kol, the two lakes Kara-kol, or the Ghaz-kol, and even yet farther east make their way, some of them into the lakes of the Tsaidam depression or become lost in its sands or in those of the Kum-tagh desert on the north, or go to feed the headstreams of the great rivers, the Hwang-ho (Yellow River) and the Yangtsze-kiang (Blue River) in the south.
The next succeeding parallel range, the Koko-shili, which is continued eastwards by the Bayan-khara-ula, between the upper headstreams of the Hwang-ho or Yellow River and the Yangtszekiang, belongs orographically to the plateau of Tibet.
YENISEI, a river of Asia, which rises in two principal headstreams, the Bei-kem and the Khua-kem, on the plateau of N.W.
One of its headstreams, the Meli, rises in French Guinea in 10 30' W.
The Khotan-Darya rises in the Kuen-lun Mountains in two headstreams, the Kara-kash and the Yurun-kash, which unite towards the middle of the desert, some 90 m.
The Umbelozi has two chief headstreams, the Black and the White Umbelozi, the White branch being the more southerly.