Nowadays, watershed management practices are undertaken based on selective criteria and/
or a specific purpose such as a decrease in flood risk, soil erosion and the like. In this respect,
fuzzy logic has the ability to manage a wide range of options for decision making. This research
aimed to use the fuzzy logic theory to priorities watershed management practices considering
time and budget constraints in catchments with high sediment production and flood risk. This
research was carried out in the Foorg watershed of Darmian town with an area of 11137 ha. All
parameters related to soil erosion and flood risk were determined using the standard methods.
Fuzzy score for each mentioned factor was then determined. Finally watershed management
practices using the fuzzy theory and GIS were prioritized.