Places in News: Lake Chad
Context:
The Lake Chad region remains volatile, recently highlighting geopolitical tensions with U.S. military strikes targeting alleged Islamic State camps in Nigeria.
The region is described as a hotbed of jihadist activity where groups like Boko Haram and Islamic State West Africa Province (ISWAP) exploit porous borders and weak state institutions.
Key Facts:
Lake Chad is a freshwater lake located in the Sahel zone of west-central Africa.
It is a transboundary lake bordered by four countries:
Chad
Cameroon
Nigeria
Niger.
The lake is primarily fed by the Chari River and seasonally by the Komodugu-Yobe river.
It sits in a large endorheic basin (no outlet to the sea)
The Ecological Crisis:
Lake Chad, once a vast freshwater lake supporting over 30 million people, has undergone a dramatic transformation over the past five decades
Once one of Africa's largest lakes, it has shrunk by more than 90% since the 1960s
Located in the Sahel, a climatically sensitive semi-arid zone, the lake’s water levels depend heavily on rainfall and inflow from rivers like the Chari River.
Severe droughts from the late 1960s through the 1970s and 1980s caused a major decline.
By 1976, the lake split into two separate northern and southern basins, divided by a shallow sill known as the Great Barrier
In the 1980s, the northern lobe frequently dried up completely due to severe droughts.
Causes of Shrinkage:
The decline is driven by climatic cycles like the Atlantic Multi-decadal Oscillation (AMO) and El Niño–Southern Oscillation (ENSO).
These cycles altered rainfall patterns in the Sahel, alongside human overuse.