The article proposes creation method of developing and calculating the most optimal mode of operation of water reservoir, with taking into account natural and technical impacts which influence to them. Researches were conducted in the Andijan reservoir. Estimated that the hydrological regime of the Karadarya River, which flows into the reservoir, is not similar with consumption and start to change year by year. The most optimal mode of operation of the Andijan reservoir has been developed for many years with taking into account the hydrological regime of the Karadarya River and technical changes in the reservoir. The calculation of the ordinates of the boundary line of the reservoir filling during the operation of reservoirs is based on the importance of maintaining a reserve volume for the amount of water collected from them for safe passage of flood waters. The proposed operation mode of reservoir allows for the prevention of emergencies and efficient use in years of high water content.

Topics
Hydrology
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