کارون is the longest river in Iran, flowing approximately 900 kilometers. It originates in the Zagros Mountains and travels through the city of Ahvaz before emptying into the Persian Gulf. The river plays a crucial role in the region's agriculture and economy, providing water for irrigation and supporting local industries. The river is also significant for its biodiversity, hosting various fish species and supporting wildlife along its banks. Additionally, کارون serves as a vital transportation route, facilitating trade and movement between cities. Its importance to both the environment and the economy makes it a key natural resource in Iran.