Abstract: The pouring process of the Pushihe concrete-faced rockfill dam is simulated by using the ABAQUS finite element software and the element birth and death procedure. The deformation characteristics of the dam after completion of construction and the stage of full water are investigated. The mathematical models of the dam deformations versus the water level, the environmental temperature and the time-effect are proposed. Based on the in-situ observation data for the dam deformations and the multi-element and nonlinear regression analysis approach, the parameters of the mathematical models are estimated. It is indicated that the vertical deformations are quite regular and the forecasted vertical deformations of the dam are in a good agreement with observations.