From the inner sides of that mountain descend the Caledon and the Senku, whilst from its seaward face the Tugela flows through Natal to the Indian Ocean.
The Caledon runs north of the Maluti, the Senku south of that range.
From the slopes of the Maluti descend many streams, the largest being the Kornet Spruit, which joins the Senku and other torrents from the Drakensberg to form the upper Orange.
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.
Of the Senku source, in Champagne Castle, Giant's Castle and other heights of the Drakensberg.
Rising on the inner slopes of the hills these rivulets all join the Senku, which receives from the north several streams which rise in the Maluti Mountains.
Of these the largest are the Semene and Senkunyane (little Senku) and the best known the Maletsunyane, by reason of its magnificent waterfall - an unbroken leap of 630 ft.
Increased by the perennial waters of these numerous torrents the Senku makes its way S.W.
Corner of the Maluti Mountains, the Senku, already known as the Orange, receives the Makhaleng or Kornet Spruit (90 m.), which rises in Machacha Mountain.