For the Boguchanskaya HPP, water flow was set taking into account the calm spring flood scenario

The Yenisei Basin Water Administration (ENBWU), in accordance with the order of the Federal Agency for Water Resources (Rosvodresursy), has established an operating mode for the Boguchanskaya HPP from May 2 to June 5 in the flow range of 2800-3400 cubic meters per second.

The decision was made taking into account the recommendations of the Interdepartmental Working Group; the regime corresponds to the hydrological situation on the Angara-Yenisei cascade and can be quickly adjusted if it changes.

The staff of the Boguchanskaya hydroelectric power station has fully completed preparations for the flood. After scheduled maintenance, hydraulic unit No. 8 was put into operation at the end of April; now six units are involved in energy production, three are in reserve. Water flows only through hydraulic units; the use of spillways is not planned. The volume of water passing through the hydroelectric complex must ensure navigable levels at the Boguchany and Tatarka water posts.

According to Rosmorrechflot, river navigation on the Yenisei in the section from the Krasnoyarsk Hydroelectric Power Station to the Angara will begin on May 10, on the Angara from the village of Strelka to the Boguchanskaya Hydroelectric Power Station – from May 25, on the Boguchansky Reservoir – from June 10.

During April, the Boguchanskaya HPP operated in the range of 2700-3200 cubic meters per second, the actual average flow rate was about 2840 cubic meters per second. The level of the Boguchansky reservoir last month changed slightly in the area of ​​207.09 m (above the level of the Baltic Sea). The ice cover on the reservoir is gradually being destroyed; the ice opening along the concrete and rock-fill dams has increased in length to 1000 meters and width to 300 meters by the beginning of May.

The lateral inflow to the station site in the last week of April increased from 30 to 100 cubic meters per second, and in the first days of May to 400 cubic meters. A year earlier, the flood began already in April; in early May, the inflow exceeded 500 cubic meters per second, and the reservoir level rose to 207.35 m. The slow development of the flood in Eastern Siberia is explained by weather conditions: in the area of ​​​​the Boguchanskaya hydroelectric station, the average temperature in April of this year was almost 7 degrees lower than in April 2025.

The regimes for filling and draining reservoirs, and the passage of floods to hydroelectric power stations are established by the Federal Agency for Water Resources (Rosvodresursy), taking into account the recommendations of the Interdepartmental Working Group, which includes representatives of the Ministry of Emergency Situations of Russia, the Ministry of Agriculture of the Russian Federation, the Federal Agency for Fisheries, Rosmorrechflot, JSC SO UES, executive authorities of the constituent entities of the Federation, etc.

Information about the hydrological situation of hydroelectric power stations that are part of RusHydro is presented in the form of daily updated infographics.