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🌊 The Chari: River Without a Sea

Follow the Chari from Central African headwaters to Lake Chad, where seasonal floods, wetlands, borders and human water use shape a changing inland basin.

3
lessons
~20 min
to learn
🗺️ Geography
subject
Adults
level
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What you’ll learn

  1. A river with nowhere to goExplain why the Chari–Logone system dominates Lake Chad’s inflow and why the lake is an endorheic basin.The river supplies most of a shallow lake whose usual losses are evaporation and seepage.
  2. Water changes as it travelsTrace how headwaters, seasonal floods and floodplains change the water available downstream.Water can support people and ecosystems in the floodplain before it ever reaches Lake Chad.
  3. A shared river, a changing lakeConnect borders, water use, climate variability and measured changes in Lake Chad’s area.The lake’s changing shoreline records a shared and contested water balance, not one simple cause.

Questions this course answers

Why is the Chari important to Lake Chad?

FAO identifies the Chari–Logone system as the source of roughly 95% of Lake Chad’s total inflow, with other rivers and rainfall contributing the rest.

Why can a floodplain be both a benefit and a downstream loss?

Floodplain water supports local livelihoods, but retention and evaporation reduce the volume continuing toward Lake Chad.

What is the safest explanation for Lake Chad’s historical shrinkage?

The cited scientific and UN sources describe interacting natural variability, drought, irrigation and damming rather than one cause for every year.

Grounded in trusted sources

  • https://www.fao.org/4/w4347e/w4347e0j.htm
  • https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2017-01-20
  • https://eros.usgs.gov/earthshots/lake-chad-west-africa
  • https://africarenewal.un.org/en/magazine/africas-vanishing-lake-chad
  • https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2000JD900587
  • https://www.britannica.com/place/Chari-River
  • https://cblt.org/our-story/

Every Wunder lesson is built from real, reputable sources — never invented.

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