The parameters of the models used to evaluate the water infiltration in soils can be determined by means of different experimental or analytical methods and different techniques of calculation. The objective of this work is to study the infiltration models by taking into account the supply of their pertinent parameters. The determination of the soil hydraulic conductivity as a function of soil-water content (K(0)), the sortivity (S) and the accumulated soil water infiltration (]) was accomplished by using the following methods: constant head permeameter method (Youngs, 1991); hydraulic conductivity from soil-water retention curve method (van Genuchten, 1980); instantaneous profile method (Hillel et ai, 1972); soil-water content and flux methods (Libardi et ai, 1980); and tension infiltrometer method (Scotter et ai, 1982; Ankeny et ai, 1991). The experiment was carried out in Piracicaba (SP), Brazil (22 º 41'8 and 47 º 39'W) in a sandy clay Red-Yellow Latosol with soil bulk density mean values of 1556 kg m-3 in the 0,2 m superficial layer and of 1276 kg m-3 , in the layer from 0,2 to 1,0 m. The higher saturated hydraulic conductivity values were achieved with the constant head permeameter method, probably because, in this case, the samples have reached, in relation to the other methods, conditions nearer the saturation. The higher range of K(0) values were achieved by van Genuchten (1980) method. ln the instantaneous profile method, the hydraulic gradient increased with the redistribution time, being near the unit till, approximately, 10 days of redistribution. The tension infiltrometer method was useful at low tensions where the other methodologies were less adequate, but more research are needed in order to standardize its procedure of use and calculation; anyway, it was a satisfactory method to determine the parameters of the used soil water infiltration models.