Karun River, River system in Chaharmahal and Bakhtiari Province, Iran.
The Karun River is a waterway flowing through mountainous terrain for 950 kilometers, making it the longest river system entirely within Iran. It supplies water to agricultural regions and serves as the main water source for numerous cities and industrial facilities.
The river was known as Pasitigris in ancient times and supported early civilizations from the fifth millennium BC onward, including Elamite settlements. This long history shows its importance as a foundation for human settlement in the region.
Multiple bridges span this waterway and connect communities across provinces, forming trade routes and social links between different regions. These connections shape daily life and exchanges between people on both sides of the river.
The best time to visit is from October through April, when water conditions are more pleasant and safer for activities. Wear comfortable shoes, as the riverbanks can be rocky and uneven in many spots.
It is Iran's only navigable river, allowing commercial shipping from inland regions to the Persian Gulf. This navigability makes it a rare trade route in a country with few waterways suitable for boats.
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