The method for reconstructing the long-term dependence of radionuclide concentrations in rivers and reservoirs based on their vertical distribution in bottom sediments is proposed. Reconstructed time dependencies of particulate and dissolved Cs-137 activity concentrations in the Upa River were found to be described well by the semi-empirical “diffusion” model.

Channel bank stability is one of the most important issues of sustainable future in the world, where lots of us live by the river. There is a direct response of the streams behavior to climate change, but the details of this process are still questionable. We studied channel bank erosion at the small river at the Black Sea coast. There was s set of observations, and we were lucky to catch the most extreme flood in the field, investigate its mechanism and measure the consequences.

Processes linked to climate change and intensified anthropogenic pressure influence the environment, the hydrology. Quantitative assessments of sediment fluxes and their temporal evolution in this mountain region are required for various environmental and engineering purposes, including the planning and maintenance of water reservoirs and other structures. we present a first analysis of the hitherto largest suspended sediment yield (SSY) database for the Caucasus region.

The paper presents the results of the study of gully erosion within the Pre-Kama region (Russia). It's based on monitoring (1984–1994 and 2015–2018) and the interpretation of high-resolution satellite images. The results suggested that the gully erosion have reduced. The main reason for the significant decrease in gully erosion was the increase in winter-spring air temperatures. The impact of land use, as well as erosion control measures was found to be less important.