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The Lead: Iran’s Water Emergency Unfolds from SpaceFor many Iranians, the most immediate threat is no longer war but water. Decades of drought, over‑extraction and dam construction have pushed the country into severe water stress, depleting reservoirs, rivers and groundwater. Recent satellite images reveal a dramatic contraction of Lake Urmia and dwindling dam levels around Tehran, underscoring a deepening crisis.The Disappearance of Lake UrmiaLake Urmia, the Middle East’s largest saltwater lake, has shrunk from nearly 6,000 sq km in the 1990s to just 581 sq km, less than 10% of its former size. Consecutive droughts, agricultural diversion, more than 60 upstream dams and intensive groundwater extraction have turned vast stretches of the lake into exposed salt flats.The Growing Water DeficitIn 2025 Iran’s 92 million people consumed around 100 billion m³ of water—about 13 billion m³ more than its renewable resources can replenish. Agriculture accounts for roughly 91% of withdrawals, while households and industry use only 7% and 2% respectively. Inefficient irrigation further wastes a significant share of this scarce resource.The Shrinking Dams Around TehranIran, a major dam‑building nation, now faces dozens of reservoirs at critically low levels. Satellite comparisons of Lar, Latyan and Mamloo dams—key supplies for the capital—show water levels declining sharply as drought and rising demand strain Tehran’s water system.Rural Exodus and Urban StrainOnly 38,000 of Iran’s 69,000 villages remain inhabited; 31,000 have been abandoned.About 27,000 villages, home to over 10 million people, are currently experiencing water shortages.More than 70% of villages face some form of water crisis.These shortages are prompting mass migration to cities such as Tehran, Mashhad, Isfahan and Shiraz, which themselves are confronting heightened water pressures.Only a Tiny Fraction from DesalinationDesalination meets just 3% of Iran’s water needs, concentrated along the southern Gulf coast. Inland regions—including Tehran, Isfahan and major agricultural zones—remain heavily dependent on dwindling surface and groundwater sources.Outlook: Policy Choices and Future RisksThe trajectory suggests escalating water scarcity unless Iran reforms water allocation, modernises irrigation, and expands sustainable supply options. Continued reliance on dam storage and limited desalination will likely prove insufficient, risking further ecological loss, social displacement and heightened regional instability.

The United States has issued a threat to demolish Iran's critical infrastructure, including bridges and power plants, if Tehran does not open the Strait of Hormuz by early Wednesday. This move, described by President Donald Trump as 'Bridge Day', has raised concerns among experts, who warn that it could amount to war crimes.Iran has approximately 300,000 bridges and technical structures, with only about 185 exceeding 100m in length. Five of the country's most prominent bridges are at risk:1. Persian Gulf Bridge (Qeshm Island): A 3.4km-long unfinished bridge connecting Qeshm Island to Bandar Abbas, representing an investment of up to $700m. Destroying it would erase decades of national planning and impact Iran's hopes for a direct link to the island.2. Lake Urmia Bridge (Shahid Kalantari Bridge): A 1.7km-long bridge connecting Tabriz and Urmia, cutting the driving distance between the cities from 240km to 130km. An attack could trigger an ecological disaster by dumping steel pilings and concrete into the shrinking Lake Urmia.3. Sadr Multilevel Expressway: An 11km-long bridge in Tehran, supporting millions of commuters daily. An attack could cause massive urban casualties, destroy a key transport artery, and plunge Tehran's emergency evacuation systems into chaos.4. Karun 4 Arch Bridge: A 378m-long bridge in Chaharmahal and Bakhtiari province, crucial for connecting Shahr-e-Kord and Izeh. Bombing it risks causing secondary damage to the hydroelectric facility, potentially leading to fatal flooding.5. Ghadir Cable-stayed Bridge (8th Bridge): A 1,014m-long bridge in Ahvaz, spanning the Karun River. Destroying it would cut the city in two, choking off daily movement and emergency services in a province already battered by air strikes.