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Water resources are of utmost importance for proper grazing management and optimal use of rangelands. In the present study, suitability of lands from the perspective 0f water resources is modeled regarding sheep as the grazing livestock. FAO (1991) method was used for the model. The study area is located at Savadkooh, Mazandaran province of Iran. The model comprised three submodels; water quality, water quantity and the distance of water resources to grazing area. According to the climatic conditions and number of permanent water resources, there was no shortage in water quantity. Results of water analysis also revealed no restricted elements for sheeps to drink the water. In the study area, in terms of water quality, the water resources were in S1 suitability class. However, steep slopes and stoniness were two barriers for water accessibility. As demonstrated by the model, 5552.32 ha (57.99%) of the study rangelands were in good class, 1523.85 ha (25.91%) in fair to moderate class while 5.76 ha (0.06%) were in poor suitability class. Non suitable rangelands were 2369.15 hectares which is equal to 20.4% of the surface area.

GIS BASED WATER SUITABILITY CLASSIFICATION FOR SHEEP – A CASE STUDY OF SAVADKOOH WATERSHED, MAZANDARAN, IRAN