In this study, the asynchronous dynamic analysis of dam-reservoir-foundation systems is performed by the Lagrangian approach. Two-dimensional finite solid and fluid elements with various nodes based on the Lagrangian approach are coded, and incorporated into the MULSAP program to perform asynchronous dynamic analysis. The Sariyar concrete gravity dam is chosen for the analysis and the east-west component of the 1992 Erzincan earthquake is used in calculations. Propagation velocities of 250, 500, 1000, 2000, 4000 m s(-1) and infinity are considered; the latter corresponds to classical dynamic analysis. Results obtained for various velocities of propagation are compared with each of the others. It is observed that decreasing the velocity of propagation produces greater stresses.