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What caused the shrinking of Lake Chad?

Author

Noah Mitchell

Published Jan 13, 2026

Lake Chad, a freshwater lake located in central Africa at the junction of Chad, Cameroon, Nigeria and Niger. The lake has shrunk dramatically over the last four decades due to a decrease in rainfall and an increase in the amount of water used for irrigation projects.

What has been happening to Lake Chad?

The lake has shrunk 90 per cent over the last 60 years, since the chronic droughts surged at the beginning of 1970s. The surface area of the lake was 26,000 square kilometres in 1963; it has now reduced to less than 1,500 square kilometres.

When did Lake Chad dry up?

After being ranked at the world's sixth largest inland water body with an open water area of 25,000 km2 in the 1960s, it shrunk dramatically at the beginning of the 1970s and reduced to less than 2,000 km2 during the 1980s, decreasing by more than 90% its area6.

What is the main threat to Lake Chad?

The lake was once one of the largest water bodies on the planet and due to climatic variability, climate change and human pressure on water resources in its basin over recent decades, the lake has shrunk by 90% from 25000 square kms in 1963 to less than 1500 square kilometers in 2001.

What is being done to restore Lake Chad?

The Lake Chad replenishment project is a proposed major water diversion scheme to divert water from the Congo River basin to Lake Chad to prevent it drying up. Various versions have been proposed.

27 related questions found

Did Lake Chad dry up?

Lake Chad, once a source of livelihood for 30 million people, has shrunk by 90% since the 1960s.

Can Lake Chad Be Saved?

The replenishment project is another major initiative to help save Lake Chad. Sources said it has already been approved by the Democratic Republic of Congo and the Republic of Congo, which share the River Congo, into which the Oubangui flows.

Is Chad vulnerable to climate change?

Chad's geography makes it particularly fragile. It is one of the world's most environmentally degraded countries, particularly its western, northern and eastern provinces, where temperature increases are projected to be 1.5 times higher than in the rest of the world.

What is the main factor contributing to the water shortage in Ethiopia?

Similar to many African countries, parts of Ethiopia face water shortages, poor sanitation, and a lack of access to clean water sources. Ethiopia is located in Africa's Horn where drought and politics are two leading causes of water shortage.

Is Lake Chad refilling?

A less ambitious project to just refill Lake Chad is currently being pursued. After the Amazon River, the Congo River has the second highest discharge rate of any river in the world. Its discharge rate into the Atlantic Ocean is almost 11,000,000 gallons per second.

Is the Sahara Desert growing or shrinking?

The Sahara — the world's biggest hot desert — is getting even bigger. In fact, it is currently about 10 percent larger than it was nearly a century ago, and scientists suggest that climate change is partly responsible.

What are the effects of water shortage?

When waters run dry, people can't get enough to drink, wash, or feed crops, and economic decline may occur. In addition, inadequate sanitation—a problem for 2.4 billion people—can lead to deadly diarrheal diseases, including cholera and typhoid fever, and other water-borne illnesses.

What causes water scarcity in the Horn of Africa?

The region is heavily reliant on agriculture to provide livelihoods for the millions that live there, yet climate change places enormous pressure on those people. As the temperature warms, population grows, migration increases, and the strain on water resources, both in terms of availability and governance, builds.

What is Ethiopia doing about the water crisis?

The Government of Ethiopia aims to increase access to safe water supply and basic sanitation in rural and urban areas and to invest more resources into water related infrastructure.

What is unique about Lake Chad?

Lake Chad is one of the largest freshwater lakes in Africa. Over 90% of the lake has shrunk in the last 60 years.

Why is Lake Chad environmentally important?

Lake Chad is economically important, providing water to more than 30 million people in four countries surrounding the central part of the Sahel. In West Africa, the multiplying effect on agricultural productivity, health and security of the region is affected by the decrease in water levels of the Lake.

Is Lake Chad freshwater or saltwater?

Lake Chad, French Lac Tchad, freshwater lake located in the Sahelian zone of west-central Africa at the conjunction of Chad, Cameroon, Nigeria, and Niger. It is situated in an interior basin formerly occupied by a much larger ancient sea that is sometimes called Mega-Chad.

Are there crocodiles in Lake Chad?

It is home to a wide variety of wildlife, including elephants, hippopotamus, crocodile (all in decline), and large communities of migrating birds including wintering ducks, ruff (Philomachus pugnax) and other waterfowl and shore birds.

What feeds Lake Chad?

Lake Chad is located in the far west of Chad and the northeast of Nigeria. Parts of the lake also extend to Niger and Cameroon. It is fed mainly by the Chari River through the Lagone tributary, which used to provide 90 per cent of its water.

Is Chad a rich country?

It is a least developed country, ranking among the lowest in the Human Development Index. Chad is one of the poorest and most corrupt countries in the world; most of its inhabitants live in poverty as subsistence herders and farmers.

Why is Africa drying up?

Poor human management through overgrazing and unsustainable irrigation has resulted in the replacement of natural vegetation with invasive plant species (now covering 50% of the lake), deforestation and the drying of the climate.

What river in Africa is drying up?

New satellite data from NASA show that the Mississippi and Colorado River basins are storing more water over the past five years, while the Congo, Zambezi and Nile basins are drying.

What causes water scarcity?

Major Causes Of Water Scarcity

Increased human consumption. Overuse and wastage of water. A global rise in freshwater demand. Overuse of aquifers and its consequent slow recharge.

Why does drought happen?

When rainfall is less than normal for a period of weeks to years, streamflows decline, water levels in lakes and reservoirs fall, and the depth to water in wells increases. If dry weather persists and water-supply problems develop, the dry period can become a drought.

What causes drought?

Droughts are caused by low precipitation over an extended period of time. Atmospheric conditions such as climate change, ocean temperatures, changes in the jet stream, and changes in the local landscape are all factors that contribute to drought.