Within the field of forensic science there is a growing trend towards the use of computer models to represent transport and degradation processes to which human carcasses are subject along rivers. These may also be used to predict downstream distance traveled by such bodies under likely scenarios, thus helping both the search for victims and the identification of feasible points of entry. In studies of bodies disposed in moving waters, many problems arise since the bodies not only decompose but also are exposed to transport, disarticulation and dispersion. In such cases, computer modeling has proven to be an invaluable tool leading towards the understanding of former cases and the prediction of the flow pattern of bodies (Ebessmeyer and Haglund, 1994; Carniel et al., 2002). In this paper a one-dimensional hydraulic model has been coupled with an object transport model in order to predict the object drift trajectories and distance traveled with time. The object transport is modelled taking into account buoyant, hydrostatic and dynamic forces calculated using velocity, discharge and depth computed by the numerical hydraulic model. Results and information from previous research studies were incorporated into the modelling framework to represent the transport of living and dead human bodies of different densities and specific gravities (Krzywicki and Chinn, 1967; Donoghue and Minniguerode, 1977). The model was calibrated by means of physical experiments carried out in the Teusacá and Magdalena rivers (Colombia). Objects of 21 kg and 44 kg and densities ranging from 0.98 to 1.02 g/cm3 were placed into the rivers, and their movement and drift trajectories were monitored and registered. Detailed hydraulic data during the experiments was gathered and the objects¿ travel times were measured. The information was used to calibrate and validate the coupled hydraulic and object transport numerical model.