Nowadays, firing is considered important among several factors destroying the plant cover in rangeland ecosystems. Rangelands in Fereydan region, Isfahan province are considered critical because of frequent annual and extensive firings. The objective of this study, done in August and September 2012 after the grazing season, was to explore the residual effect of firing events (2008 to 2012) on soil organic matter, texture, carbonate, water infiltration, hydraulic properties, water repellency, mechanical strength and erodibility in the rangelands of Fereydan region. It was also intended to distinguish the critical locations and condition in terms of fire effects on soil. Ten stations per year were selected from the fire events of 2008 to 2011, whereas five stations were studied in 2012 because of low number of 2012-fire events. In order to study the independent effect of firing at each year, paired t-test was used. The residual effect of firing upon time on the measured soil properties was tested using an unequal completely randomized design. Moreover, factor analysis was employed to evaluate the impact of important soil properties (organic matter, OM, carbonate, CaCO 3 , clay content, Clay, porosity, f , saturated hydraulic conductivity, K s , water repellency, R , saturated water content, ? s and scaling parameter of van Genuchten model, ? ) on soil stability and degradation in each location in order to recognize the locations which were highly and least affected by fire events. The results showed that fire significantly increased OM in all the years, however, the effect on soil texture and particle size distribution was not significant. Results of Wooding's analysis using tension infiltrometer data indicated that firing in 2010, 2011 and 2012 significantly decreased the soil hydraulic conductivity at suctions of 15 and 10 cm, however, there was no significant difference for other fire events (2008 and 2009) because of soil recovery. In all fire events, the hydraulic conductivity at suctions of 2 and 5 cm and saturated hydraulic conductivity were not significantly different between burn and unburn locations. Moreover, fires in 2010, 2011 and 2012 significantly reduced soil sorptivity at suctions of 10 and 15 cm, however, the effect was not significant for fire events in 2008 and 2009. Firing non-significantly decreased soil soptivity at suctions of 2 and 5 cm and macroscopic capillary length ( ? c ). Steady-state water flow rate ( q ) at all suctions was significantly reduced due to firing in 2010, 2011 and 2012. However, for the fire events in 2008 and 2009, the effect was not significant on the q values at suctions of 5, 10 and 15 cm and was only significant at suction of 2 cm. The firing did not significantly affect infiltration parameters which were predicted by DISC software ( K s , ? , n and ? s ) and Dexter's index of soil physical quality ( S Dexter ). The fire did not significantly affect R, but highest R values were observed immediately after the firing. The fire reduced soil shear strength and penetration resistance; this effect was significant for the fire events of 2010, 2011 and 2012. Firing significantly increased the suspended sediment concentration(ratio of sediment mass to runoff volume). The effect was diminished over the time after fire events and the lowest difference was observed in two years after fire events. The suspended sediment concentration was significantly increased three years after firing due to livestock overgrazing. Overall, the results indicate that controlled firing of locations on north-facing slopes might be beneficial for soil stability against erosion if livestock grazing is prevented and/or controlled.