The massive desert canal that reshaped a nation and triggered an ecological catastrophe

Countries & Cities · Published 30 September 2026 Swipe more like this →

In short: Spanning 1,375 kilometres across the arid expanse of Turkmenistan, the Karakum Canal is a feat of Soviet-era engineering. While it successfully transformed desert landscapes into productive agricultural land and provided a vital water supply for Ashgabat, its construction came at a staggering environmental cost to the distant Aral Sea.

Construction of the Karakum Canal began in 1954 and reached completion in 1958. Designed to divert water from the Amu-Darya River, the canal carries approximately 13 cubic kilometres of water annually across the Karakum Desert. This massive infrastructure project was primarily intended to support large-scale cotton monoculture, a practice heavily promoted by the Soviet Union to maximize regional agricultural output. Beyond irrigation, the canal serves as a critical water source for the capital city, Ashgabat, and is navigable across much of its length.

The current route was not the initial plan. In the early 1950s, Soviet engineers began work on the Main Turkmen Canal, which was intended to start near Nukus and run southwest toward Krasnovodsk, utilizing roughly 25 percent of the Amu-Darya's total flow. However, these ambitious plans were abandoned following the death of Joseph Stalin. Authorities subsequently pivoted to the current route, which required the creation of regulating structures like the Hanhowuz Reservoir to manage the flow of water effectively.

The environmental legacy of the project remains deeply controversial. By diverting such a significant volume of water from the Amu-Darya, the canal is widely recognized as a major contributing factor to the catastrophic drying of the Aral Sea. Despite these ecological consequences, the Soviet Union had long-term aspirations to extend the canal even further to reach the Caspian Sea. Today, the canal stands as a testament to the era's industrial ambition, illustrating the profound, often irreversible, impact that large-scale water diversion projects can have on regional ecosystems and long-term environmental stability.

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