60 Fun Facts About Lake Victoria

Lake Victoria is the largest lake by area on which continent?

With a surface area close to 60,000 square kilometres it is also the world's largest tropical lake.

Lake Victoria is the world's second-largest freshwater lake by surface area, behind which lake?

By volume it ranks only ninth among the world's continental lakes because it is so shallow.

Which country holds the largest share of Lake Victoria's surface, about 49 percent?

Uganda holds about 45 percent and Kenya just 6 percent.

Roughly what percentage of Lake Victoria lies within Kenya?

Kenya's slice includes the Kavirondo Gulf.

Which river is the only outflow from Lake Victoria?

It leaves the lake on the northern shore in Uganda.

Near which Ugandan town does the Nile leave Lake Victoria?

For at least 12,000 years the water drained over a natural rock weir there, blasted away by engineers in 1952.

Which British explorer renamed the lake after Queen Victoria in 1858?

He was the first European to see it, on 30 July 1858, during a 47-day side trip.

Which fellow explorer, sick at Kazeh, furiously disputed that the lake was the Nile's source?

Their very public quarrel drew other explorers keen to confirm or refute the discovery.

Which explorer confirmed the lake as the Nile's source by circumnavigating it in 1875-76?

He also established that Lake Tanganyika and the Nile were not connected at all.

Which newspaper funded Stanley's expedition around the lake?

The same paper had earlier sent Stanley to find Livingstone.

Where on the northern shore did Stanley report the lake's great outflow into the Nile?

The falls were later flooded by the dam built at the outflow.

Which missionary-explorer failed to verify the lake's link to the Nile in the 1860s, drifting into the Congo system?

His wanderings ended with the famous meeting with Stanley at Ujiji.

How did Speke die on 15 September 1864, the day before a scheduled public debate with Burton?

An inquest ruled it accidental, though Burton loudly spread the idea that it was suicide.

In which English city was the Speke-Burton debate on the Nile's source due to take place?

It was organised by the geographical section of the British Association.

From which side of the lake did Speke first sight it in 1858?

He had left the ailing Burton behind at Kazeh, near present-day Tabora.

In Luganda the lake is Nnalubaale; in which language is it called Nam Lolwe?

Its Swahili name is Ukerewe and its Kinyarwanda name is Nyanza.

Roughly what share of Lake Victoria's water arrives as direct rainfall on the lake?

Evaporation from the surface is about two metres a year, nearly double the rainfall of the surrounding land.

Which river is the largest flowing into Lake Victoria?

One of its tributaries in Rwanda or Burundi is usually considered the ultimate source of the Nile.

What is the approximate maximum depth of Lake Victoria?

For such a vast lake it is remarkably shallow, averaging just 40 metres.

Where is the deepest part of Lake Victoria found?

The first true bathymetric map, based on ten thousand digitised points, was produced in 2016.

Roughly how old is Lake Victoria, according to the geological account of its formation?

It formed when a tilting block of crust backed up westward-flowing rivers.

Sediment cores show Lake Victoria has dried up completely at least how many times since it formed?

The drying cycles are probably linked to past ice ages, when rainfall declined worldwide.

Which group of fish accounts for more than 500 species in Lake Victoria, almost all found nowhere else?

They arose through a rapid burst of evolution in roughly the last 15,000 years.

Which is the only lake in the world with more fish species than Lake Victoria?

Roughly 300 of Victoria's cichlid species have still not been formally described.

Which large predatory fish, introduced in the 1950s, is blamed for the extinction of hundreds of the lake's cichlids?

Its arrival has been called the most dramatic example of human-caused extinctions within an ecosystem.

How large can the invasive predator Lates niloticus grow?

Mature fish typically measure 1.2 to 1.4 metres.

What is the meaning of the Hausa name for Lates niloticus, giwan ruwa?

In French-speaking countries it is simply called capitaine.

Which Australian state levies heavy fines for possessing a live Lates niloticus, a rival of a native fish?

The native rival is the barramundi, which grows to about 1.5 metres.

Which 2004 Hubert Sauper film exposed the arms-for-fish trade around the lake's perch?

It showed cargo planes flying in weapons from Europe and flying out fillets.

At their early-1990s peak, roughly how many tonnes of perch were landed from Lake Victoria each year?

Sales of the fish to the EU reached 169 million euros in 2003.

Which invasive floating plant choked large parts of Lake Victoria in the late 1990s?

Its mats block boats, hydroelectric intakes and access to the shore.

Which insects were introduced to help control the lake's invasive weed?

Harvesting and chopping boats proved far more effective than pulling the plants by hand.

A green power plant built on the Kenyan shore in 2013 turns harvested lake weed into what?

Its by-product can be used as fertiliser.

The jumping spider Evarcha culicivora, found only around the lake, feeds mainly on what?

It is one of the few known predators that specifically targets blood-fed mosquitoes.

The lake's Biomphalaria and Bulinus snails host the parasite that causes which disease?

The loss of snail-eating cichlids and the spread of hyacinth may both increase infections.

What is the 1952 standard that makes the dam at the lake's outflow mimic the natural flow called?

It sets the flow between 300 and 1,700 cubic metres per second depending on lake level.

Uganda's second hydroelectric station at the lake's outflow, completed in 2002, is called what?

By 2006 the lake had fallen to an 80-year low, and a hydrologist calculated Uganda was releasing twice the agreed flow.

By 2006 the water level of Lake Victoria had reached its lowest point in how long?

Between 2010 and 2022 the trend reversed and the surface area grew by 15 percent, flooding lakeside communities.

The ferry MV Bukoba sank in Lake Victoria in May 1996 with roughly how many deaths?

The official toll of 894 makes it the deadliest maritime disaster in the Southern Hemisphere.

Which senior al-Qaeda figure died in the MV Bukoba sinking?

At the time he was the organisation's second in command.

The ferry MV Nyerere capsized on the lake in September 2018, killing how many people?

It was the lake's second major ferry disaster in a generation.

How many of the 43 aboard died when Precision Air Flight 494 crashed into the lake near Bukoba in 2022?

The aircraft was an ATR 42-500 carrying 39 passengers and four crew.

Until 1963 the lake's fastest ferry, MV Victoria, carried what special designation?

Train ferries followed in 1966 with MV Uhuru and MV Umoja.

Which of these Lake Victoria ports lies in Kenya?

The other three lie across the water in Uganda or to the south.

In which Jules Verne novel do travellers cross the lake in search of the source of the Nile?

The 1962 film version has Professor Ferguson float across the lake on the way to the Volta.

How many islands make up the Ssese archipelago in the lake's northwestern corner?

About half of them are inhabited, by the Bassese people.

Which is the largest of the Ssese Islands, making up more than half the archipelago's land?

Its main town, Kalangala, is the headquarters of a district with no mainland territory at all.

The Baganda people revere Ssese as what?

Kings of Buganda customarily visited to pay tribute at shrines including that of Mukasa, spirit of the lake.

The upper Nile below the lake is called the Victoria Nile until it reaches which lake?

Only after crossing into South Sudan does it strictly become the White Nile.

Per the 2025 State of the Basin Report, roughly how many people live in Lake Victoria's basin?

The report was launched during the first Lake Victoria Day, held in Mwanza in 2026.

Who wrote the lake's first systematic fisheries survey in 1927-28, praising the ngege tilapia?

Several Haplochromis species he caught are now thought to be extinct.

The tilting block of crust that created Lake Victoria's basin fractured along the line of what?

Before that, streams in the area flowed west to the Congo and east to the Indian Ocean.

What is the Swahili name for Lake Victoria?

Kinyarwanda speakers call it Nyanza and Luganda speakers Nnalubaale.

Roughly what is the average depth of Lake Victoria?

The lake occupies a shallow depression, unlike the deep rift lakes of Tanganyika and Malawi.

By volume, where does Lake Victoria rank among the world's continental lakes?

It holds about 2,424 cubic kilometres of water despite its huge surface area.

About how many years ago did Lake Victoria last dry out completely?

It refilled about 14,700 years ago as the African humid period began.

Which two train ferries began linking Kenya and Tanzania across the lake in 1966?

The main ports on the lake include Kisumu, Mwanza, Bukoba, Entebbe, Port Bell and Jinja.

The critically endangered native ngege of Lake Victoria is also known by which name?

It and the Victoria tilapia are the lake's only native cichlids outside the haplochromines.

Which national capital sits on Lake Victoria's northern shore?

Kenya's Kisumu and Tanzania's Mwanza are the other big lakeside cities.

Which of these mammals lives in and around Lake Victoria's wetlands?

The swamp-dwelling antelope shares the shoreline with hippos, clawless otters and marsh mongooses.