The Arvand River, also known as the Shatt al-Arab, is a significant waterway located in the Middle East. It forms the natural border between Iran and Iraq and is created by the confluence of the Tigris and Euphrates rivers. The river flows into the Persian Gulf and plays a crucial role in the region's ecology and economy. The Arvand River is vital for transportation, fishing, and agriculture in the surrounding areas. Its waters support various ecosystems and provide livelihoods for many communities. Additionally, the river has historical importance, having been a key trade route for centuries.