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How did the Zayandeh River influence the growth of Isfahan?

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Isfahan, Iran: Masjed-e Emām (“Imam Mosque”) — Isfahan Masjed-e Emām (“Imam Mosque”), Isfahan, Iran.

The Zayandeh River has been a fundamental influence on the development and character of Isfahan, serving as the city's vital water source and a central feature of its urban planning.12

When Shah Abbas I designated Isfahan as the Safavid capital in 1598, the river's proximity was a primary factor in his decision. As he expanded the city, the river was brought within the city walls, effectively dividing the metropolis into two sections. This necessitated the construction of iconic bridges, such as the Si-o-Se Pol, which functioned not only as essential transport links for goods and people but also as dams to manage water flow and as social hubs for the community.1

The river also shaped the city's aesthetic and social landscape. The Chahār Bāgh avenue was designed to connect the city to the river, and the waterway provided a backdrop for royal events and public leisure. Today, however, the river faces significant environmental challenges due to water diversion for agricultural and industrial use, which has led to public concern and protests regarding its preservation.13