Development of extreme hydro/chemical phenomena during the snowmelt periods in the Moskva River (Rublyovo) and their interrelations with the water flow in the river have been investigated. The analysis was based on the rows of water quality daily average values including turbidity, color, permanganate oxidability, alkalinity, pH, chlorides, ammonia ion, iron, as well as the data on the river water flow. A two-month rated period March 15 – May 15 has been identified out of the data rows over 15 years of observations (1997–2011). It has covered the high water peak, preceding waves of thaw and successive period of relaxation. Special features of the indicators extreme behavior during the said period have been described. Variability of indicators during the snowmelt period was illustrated by the 1998 and 1999 data when washing of the river bed was carried out. During these measures performing links between water quality indicators and water consumption were the most obvious. Определен суммарный сток ингредиентов за половодье в зависимости от стока воды. It has been demonstrated that this dependency obeys the linear law.
Natural background and transformation of water quality in the Moskva River
