Prioritizing watershed for gabion check dams building by spatial multi-criteria analysis (SMCE), in Hasanrobat Esfahan

Subject Areas : Spatial Planning

Ali Akbar Jamali ¹ , Abolfazl Rahimabadi ² , Nasim Zerang ³ , Arash Rahmatian ⁴

1 - Maybod Branch, Islamic Azad University
2 - Yazd Branch, Islamic Azad University
3 - Yazd Branch, Islamic Azad University
4 - Tehran Science and Research Branch, Islamic Azad University

Received: 2016-04-29 Accepted : 2016-08-11 Published : 2017-01-20

Keywords: watershed, SMCE, Site selection, check dam,

Abstract :

The watershed of Hassanrobat which is located in Meimeh in Isfahan province, is studied in current research in order to construct Gabion Dams. Experts suggest the location of dams' in water channels based on economical reasons as a priority for locating dam. Spatial Multi Criteria Evaluation is employed to determine critical position of the dam in watershed area. All the maps of key factors divided into two groups and were entered the SMCE as limitation factors. Therefore it is needed to standardize the factors such as slope and rainfall with fuzzy model. However, other ones (vegetation, roads, villages, springs and wells) standardized by Cast method. The two remaining maps: land use and geology standardized based on experts suggestion. Eventually, weighted the factors of first group while, the second group are weighted by hierarchy in order to product of the final map that show the priorities to construct Gabion dams in the region. Obviously, natural factors affect the final choice as well as economy of the region. This study proposes mentioned location to related planners since soil erosion would significantly decrease after dam constructed.