In the north of Fars province, there is a large mountainous region, which is the birthplace of many springs, waterfalls and rivers due to good rainfall. This vast catchment area is slowly merging to form larger rivers. One of these important rivers is known as Kor and starts from the north of Fars province near the city of Sedeh. At the beginning of the river, the beautiful Mulla Sadra Dam was built to create adequate water storage by controlling upstream floods. Gradually, with the joining of small rivers, this river becomes bigger and wider. Some of the small rivers originate from famous tourist spots, such as Margon Falls, Beheshte Gomshode (Lost Paradise), and Tang-e Boraq (Boraq Gorge), each of which contributes to the flooding of the Kor River.
After traveling a long way, Kor River finally reaches Dorodzan Dam to create a large lake, a significant source of water for agriculture in the region. Of course, drinking water in many cities and villages is also supplied from this dam, and this shows the importance of this river in the lives of many people around it.
The Kor River continues its long journey after the Dorodzan Dam to eventually lead to the beautiful Bakhtegan Lagoon.