Аннотация:The analysis of studies on waves of translation and their dynamic effects on water infrastructure
facilities indicates the incompleteness of accounting the dispersion component of wave motions in discharge flows. Existing analysis methods for the surge parameters with the dependence of the propagation velocity and wave pressure on the wavelength should be only considered as a rough approximation of the role of dispersion processes accompanying the surge propagation in river flows. The purpose of the research is to increase the accuracy of reliability analyses for equipment and auxiliary mechanisms of hydraulic structures and water facilities in the context of the growth of hydrologically hazardous naturalphenomena in the form of surges.