Before entering Khuzestan province, Karun river is known as Bazoft. Shortly before the Karun 4 dam, the Khersan river crosses the Bazoft river to form the massive Karun river.
To control the seasonal floods of the Kor River and store its water, a dam called Mulla Sadra has been built on it. This dam is located about 175 km north of Shiraz and near the city of Sedeh.
This lake is located on a roaring river and the existence of very beautiful mountains along the lake, which are green and very depressing from mid-April to September, has created a unique view.