OK...stupid question. Isn't Iran primarily desert? How many bridges can they have?
Iran has approximately 300,000 bridges
Iran does not have a single, definitive count of all its rivers, but the country's hydrology is characterized by approximately 12 major river basins and a vast network of seasonal and permanent streams. Most of these rivers originate in the Zagros and Alborz mountain ranges and drain into the Persian Gulf, Caspian Sea, or internal basins.
Key facts about Iran's river system include:
Major Basins: The country's water is divided into six major basins, including the Central Plateau (largest), Persian Gulf and Gulf of Oman, Caspian Sea, Lake Urmia, Eastern Borders, and Qareh Qum.
River Types: The majority of Iranian rivers are seasonal, with flows peaking in spring from snowmelt and diminishing significantly in summer, though permanent streams exist in the northern and western margins.
Notable Rivers: The Karun River is the longest river entirely within Iran (950 km or 590 miles) and the only permanently navigable waterway, while the Aras River is the longest overall (666 miles) as it flows through multiple countries.