Source of the Nile Identified

In 1862, the British explorer John Hanning Speke reached the northern shore of Lake Victoria at the point where the White Nile flows out of it, near present-day Jinja in Uganda. He declared the lake to be the river's source. The claim ended one of the oldest geographical puzzles in the Western world, though it also set off a bitter dispute that outlasted Speke himself.

The question of where the Nile began had fascinated people since antiquity. Greek and Roman writers speculated about it, and Ptolemy's map of the second century AD showed the river rising from lakes fed by snowy mountains, an idea that proved surprisingly close to the truth. In the nineteenth century the search became a matter of European scientific prestige. The Royal Geographical Society in London sponsored several expeditions into East Africa, helped by earlier work by missionaries such as Johannes Rebmann and Johann Ludwig Krapf, who had reported large inland waters and snow-capped mountains.

Speke first saw Lake Victoria in 1858 while traveling with Richard Burton, during an expedition that had set out to find the great lakes of the interior. Speke reached the southern shore of the lake, named it after the British queen, and became convinced on the spot that it fed the Nile. Burton doubted this, favoring Lake Tanganyika, and the two men quarreled. Speke returned to England first and promoted his own view. He then led a second expedition, with James Augustus Grant, setting out from the East African coast in 1860. The journey passed through the kingdoms of Karagwe and Buganda, where Speke spent time at the court of the Buganda king, Mutesa I. The party was heavily dependent on African porters, guides and local rulers, whose knowledge and cooperation made the journey possible.

Speke's evidence was real but incomplete. He had seen the river leave the lake, yet he had not followed the whole course of the Nile, and he had not mapped the lake's full extent. Critics, Burton among them, argued that the case was unproven. A public debate between Speke and Burton was planned for September 1864, but Speke died the day before in a shooting accident, widely believed to have been accidental, though some suspected suicide.

Later explorers vindicated his central claim. Henry Morton Stanley circumnavigated Lake Victoria in 1875 and confirmed it was a single large lake with an outflow at Jinja. Modern geographers still debate which feeder stream, such as the Kagera River, counts as the farthest headwater, but Lake Victoria remains the Nile's great reservoir. Speke's journey also opened the interior to growing European involvement, with long-term consequences for the region.