The article Pulsating effect of waves released from Dniester Hydropower Complex (hydropeaking effect) represents a study that evaluate the hydropeaking effect from Dniester Hydropower Complex (DHC) by analysis of certain indicators, and by estimation of impact zone of this phenomenon. Main estimated indicators are intraday water level amplitude and water level increasing and decreasing rate for 2013-2022. Times series contain many gaps. The results show that near DHC intraday water level amplitude is about 50 cm and decreases to 21 cm to 100 km downstream. Higher values of this indicator are in warm period when the impact of this phenomenon can extend over 200 km. Increasing and decreasing rate near DHC is about 0,31 cm/min and – 0,17 cm/min, 25 km downstream it decrease twice and to 100-200 km lower on the course it is about 0,04 cm/min and – 0,03 cm/min. The values are more or less the same during the year. Thus, hydropeaking effect is considered significant impact on hydrological and ecological state of the Dniester river on a length over 100 km downstream DHC.