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World Geography / Lakes — UPSC Mains Model Answer

Geography · UPSC CSE
Question: Lake Turkana — geographical significance, ecological importance, and heritage status

Introduction

Lake Turkana, the world's largest permanent desert lake, sits at the intersection of ecological fragility and archaeological richness, making its conservation a matter of both regional and global concern.

Body

1. Geographical Identity

Located primarily in northern Kenya with its northern tip touching Ethiopia, Lake Turkana is fed mainly by the Omo River. Its striking greenish hue, caused by algae and mineral content, has earned it the popular name 'Jade Sea.' The surrounding landscape is arid and volcanic, characteristic of the East African Rift System.

2. UNESCO World Heritage Recognition

The lake and its surrounding national parks are inscribed as a UNESCO World Heritage Site, recognised for outstanding universal value in both natural and cultural dimensions. The region contains significant fossil deposits that have contributed substantially to understanding early human evolution, making it a critical site for paleoanthropology.

3. Ecological and Hydrological Significance

Turkana supports diverse aquatic life including Nile crocodiles, hippopotamuses, and numerous fish species, sustaining local fishing communities. Being a closed-basin lake with no outlet, it is highly sensitive to changes in inflow, making upstream dam construction on the Omo River a serious transboundary water governance concern.

4. Conservation Challenges

Declining water levels driven by upstream water diversion, climate variability, and pastoral pressure threaten the lake's ecological balance. Effective management requires coordinated Kenya-Ethiopia cooperation within frameworks addressing both livelihood security and environmental sustainability.

Conclusion

Lake Turkana exemplifies how ecological, cultural, and geopolitical dimensions converge in a single water body. Sustaining it demands transboundary governance mechanisms that balance developmental aspirations with irreplaceable natural and heritage values.

Word count: 239

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Related PYQs on World Geography / Lakes

PYQ 2026
With reference to Turkana Lake, which of the following statements is/are correct ? 1. It is the world's largest desert lake. 2. The lake lies along the eastern edge of the Sahara Desert in South Sudan. 3. The lake is listed as a UNESCO World Heritage Site and is also known as the 'Jade Sea'.

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