Vestnik scientific and methodological council in environmental engineering and water management | 2021
EFFECT OF CHANGES IN THE LEVEL DURING THE YEAR ON THE SLOPE OF THE WATER SURFACE OF THE MSTA RIVER
Abstract
The advanced Mathcad program are proposed for processing large amounts of information about daily water levels in rivers. The results of observations of the hydrological posts of Roshydromet over the level of the Msta River (Neva basin) for 10 years (2009-2018) served as initial data. The analysis showed a close re-lationship to the stochastic slopes of the water surface (SWS) with the water levels. The coefficient of pair correlation between them remained above 0.7 in all years. The range of changes in SWS is rather narrow: 0.166 to 0.194%. The obtained linear regression equations agree quite satisfactorily with the observational data. The determination index is in the range from 0.608 to 0.859. The results of the study can be used for short-term forecasting of the passage of a flood wave.