DETERMINATION OF ROUGHNESS COEFFICIENTS WHEN PERFORMING HYDROLOGICAL RESEARCH
The main hydrological characteristic, determined when performing engineering surveys, is discharge. One of the most important indicators affecting the flow rate is the roughness coefficient, which corresponds to the resistance of the channel to the flow. In accordance with the regulatory documents in force on the territory of the Russian Federation, the roughness value is taken according to the visual characteristics of the channel, which is subjective and can lead to significant errors in calculations. This paper presents the results of the analysis of methods for calculating the roughness on the example of the Lesnaya River (Kaliningrad).