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What role did British rule play in building canals in the Indus River basin?

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Physical map showing the Indus River basin and its drainage network across parts of Pakistan, India, China, and Afghanistan. The map details river courses, tributaries, canals, dams, irrigated and marsh areas, sand regions, and elevation changes with shaded relief. International, disputed, and control boundaries are marked, and a small locator map in the corner shows the basin's position within South Asia. — Indus River The Indus River basin and its drainage network.

During the period of British administration, which began in earnest around 1850, the government initiated modern irrigation engineering in the Indus River basin. This effort resulted in the creation of what became the world's largest system of canal irrigation.1

British authorities focused on reviving and modernizing existing infrastructure, including old canals and inundation channels throughout the Sindh and Punjab regions. These large-scale developments were foundational to the region's agricultural success, though the subsequent partition of British India in 1947 eventually split these integrated systems, leading to water supply disputes that were later addressed by the Indus Waters Treaty.1