Investigation of the current state of the tailwater of the Nizhny Novgorod hydroelectric power station, taking into account channel deformations and the effect of dredging

Integrated waterworks on rivers have a great impact on the state of natural waterways. With the commissioning of hydroelectric facilities and reservoirs that regulate river flow, a new hydrological and channel regime is created; the intensity and nature of channel processes change. The regulation of the runoff by hydropower systems introduces changes in the travel and navigation conditions of the river in question, especially in the lower pools. In this paper, an assessment is made of the current state of the lower pool of the Nizhny Novgorod hydroelectric power station, which is one of the areas limiting navigation throughout the entire unified deep-water system of the Russian Federation. The results of studies of the effect of dredging on the level regime of the tailwater are also presented.