How Many Lakes Are There in Africa? The Real Answer

There is no official count of Africa's lakes, and any single figure you see quoted is a size cut-off in disguise. This piece explains why the number moves, gives the twenty or so lakes that carry exam weight with their areas and countries, and shows how the East African Rift explains almost the whole map.

There is no official count, and that is the real answer

Nobody has published an authoritative number of lakes in Africa, and no exam will ever ask you for one. Satellite databases that map every standing waterbody above 0.1 square kilometres put the continent in the tens of thousands. Narrow it to permanent lakes big enough to carry a name on an atlas page and you are down to a couple of hundred. Narrow it again to lakes that a UPSC question has ever touched, and the list is about twenty.

So the honest reply to the query is this: pick a size cut-off and I will give you a number. Change the cut-off and the number changes by three orders of magnitude.

There are two other reasons the count refuses to settle. First, many African lakes are seasonal. Etosha Pan in Namibia and the Makgadikgadi pans in Botswana are dry, cracked salt flats for most of the year and shallow sheets of water after good rains. Are they lakes? Depends who is counting. Second, the continent keeps making new ones. Lake Volta appeared in 1965 when the Akosombo Dam closed, Lake Nasser filled behind the Aswan High Dam through the 1960s and 70s, and dam building has not stopped since.

The twenty that actually matter

This is the working list. Learn the area, the countries and the one distinguishing fact for each, and you have covered nearly everything that gets asked about African lakes. Areas are approximate, because several of these lakes change size with the season.

Lake	Countries	Approx. area (sq km)	Why it gets asked
Victoria	Uganda, Kenya, Tanzania	68,800	Largest in Africa, second largest freshwater lake in the world by area, source of the White Nile
Tanganyika	DR Congo, Tanzania, Burundi, Zambia	32,600	Deepest in Africa at about 1,470 m, second deepest in the world, longest freshwater lake
Malawi (Nyasa)	Malawi, Mozambique, Tanzania	29,500	Southernmost of the rift lakes, more fish species than any other lake on earth
Turkana	Kenya, small part in Ethiopia	6,400	World's largest permanent desert lake and largest alkaline lake, fed by the Omo
Kariba	Zambia, Zimbabwe	5,580	Largest man-made reservoir in the world by volume, on the Zambezi
Albert	Uganda, DR Congo	5,300	Western Rift, White Nile passes through it
Nasser	Egypt, Sudan (as Lake Nubia)	5,250	Behind the Aswan High Dam
Mweru	Zambia, DR Congo	5,120	Congo basin, drained by the Luvua
Volta	Ghana	8,500	Largest man-made lake in the world by surface area, Akosombo Dam, 1965
Chad	Chad, Cameroon, Niger, Nigeria	1,350 to 25,000	Endorheic, shrank dramatically after the 1960s
Tana	Ethiopia	3,000	Source of the Blue Nile
Kivu	Rwanda, DR Congo	2,700	Holds huge dissolved methane and CO2, now being extracted for power
Edward	Uganda, DR Congo	2,325	Western Rift, linked to Lake George by the Kazinga Channel
Natron	Tanzania	1,040	Highly alkaline soda lake, main breeding site of lesser flamingos
Assal	Djibouti	54	Lowest point in Africa at 155 m below sea level, hypersaline
Bosumtwi	Ghana	49	Formed in a meteorite impact crater
Nyos	Cameroon	1.5	Crater lake, the 1986 limnic eruption killed about 1,746 people
Oguta	Nigeria	2.5	Natural finger lake at the Njaba and Urashi confluence

One line on the map explains most of them

Look at where the big lakes sit. Almost all of them fall along two roughly parallel lines running north to south through East Africa. That is the East African Rift, where the continent is slowly pulling apart, and the floor between the fault blocks has dropped.

The Western Rift carries the deep ones: Albert, Edward, Kivu, Tanganyika, Rukwa and Malawi. They are long, narrow and steep sided, because they sit in fault troughs rather than in shallow basins. The Eastern Rift carries Turkana, Naivasha, Nakuru, Magadi and Natron. These are shallower and often intensely salty or alkaline, because they have no outlet to the sea and the surrounding volcanic rock feeds them sodium carbonate.

Victoria sits between the two arms, and this is the point examiners like. It is not a rift lake. It occupies a broad, shallow sag in the plateau caused by uplift on either side, so despite being the largest lake on the continent it is only about 80 metres deep at its deepest. Tanganyika covers less than half Victoria's area and holds several times more water. If a question pairs largest with deepest, that is the trap.

Lake Chad, and why it keeps coming back in papers

Lake Chad is the one African lake that turns up in current affairs, environment and international relations all at once. In the early 1960s it covered around 25,000 square kilometres. By the mid 1980s it had lost roughly nine tenths of that. Drought in the Sahel did most of the damage, and heavy irrigation withdrawal from the Chari and Logone rivers finished the job. The lake has been broadly stable since the 2000s, and some years it recovers a little, but it is nowhere near its old size.

The consequences are not just hydrological. Around thirty million people depend on the basin. Fisheries collapsed, pastoralists and farmers began competing for the same shrinking margins, and the instability fed directly into the security crisis in northeastern Nigeria and the Sahel. The Lake Chad Basin Commission coordinates the four riparian states, and the long discussed Transaqua proposal to divert water from Congo basin tributaries has never moved past paper.

Remember its type as well. Chad is endorheic, meaning it has no outlet to the ocean, and it is remarkably shallow, often under seven metres. A shallow closed basin in a semi-arid belt loses water fast when the rains falter. That is the whole story in one sentence.

How to actually retain this

Do not memorise the table cold. Draw it. Sketch Africa's outline, mark two vertical lines through the east for the rift arms, drop the lakes onto them in order from north to south, then add the four outliers: Chad in the Sahel, Volta in Ghana, Nasser in Egypt, Kariba on the Zambezi. Ten minutes, done from memory, twice in a week. That beats an hour of reading.

And when someone asks how many lakes Africa has, the useful answer is not a number. It is that Africa's lakes are mostly the visible scars of a continent splitting in two, plus a handful of dams and one dying inland sea.

FAQs

1. Which is the largest lake in Africa?

Lake Victoria, at roughly 68,800 square kilometres, shared by Uganda, Kenya and Tanzania. It is also the second largest freshwater lake in the world by surface area, after Lake Superior.

2. Which is the deepest lake in Africa?

Lake Tanganyika, with a maximum depth of about 1,470 metres. Only Lake Baikal in Russia is deeper, and Tanganyika holds a significant share of the world's unfrozen surface freshwater.

3. How many African Great Lakes are there?

Most definitions count seven: Victoria, Tanganyika, Malawi, Turkana, Albert, Edward and Kivu. Some lists add Lake Rukwa, which is why you will occasionally see the number given as eight.

4. What is the largest man-made lake in Africa?

Lake Volta in Ghana, at about 8,500 square kilometres, is the largest man-made lake in the world by surface area. By volume of water stored, Lake Kariba on the Zambia and Zimbabwe border is the largest reservoir on earth.

5. Why are so many East African lakes salty?

Lakes like Natron, Magadi and Turkana sit in closed basins with no outflow to the sea, so dissolved salts accumulate as water evaporates. The surrounding volcanic rock adds sodium carbonate, which makes several of them strongly alkaline soda lakes rather than simply salty.

6. Is Lake Chad still shrinking?

It lost around ninety percent of its surface area between the 1960s and the 1980s, but it has been broadly stable since the early 2000s, expanding and contracting with rainfall. It has not recovered anything close to its former size.