1. Kermanshah Regional Water AuthorityKarst Research and Study Office of Western Iran Kermanshah Iran
2. Department of Geomorphology, Faculty of Natural ResourcesUniversity of Kurdistan Sanandaj 66177‐15175 Iran
3. Department of Rangeland and Watershed Management, Faculty of Natural ResourcesUniversity of Kurdistan Sanandaj 66177‐15175 Iran
4. Earth Science Department, Geological BuildingUniversidad de Zaragoza Zaragoza 50009 Spain
5. Department of Watershed Sciences Engineering, Faculty of Natural ResourcesUniversity of Agricultural Science and Natural Resources of Sari Mazandaran 48181‐68984 Iran