Abstract: Construction of hydroelectric Power station with deep-water reservoir results in appreciable changes in hydrothermal state of the river near the waterworks facility# In deep-water reservoirs a temperature stratification of water is established, the temperature of the water noticeably changes with depth. Both theoretical and experimental investigations have shown that the velocity and temperature distribution of the non-homogeneous fluid near a dam depends on the character of stratification, the discharge and the position of the intake apertures. Generally in studying stratified fluids one uses equations in Boussinesi approximation ^[1,2]. Studies aiming to an optimal selection of the location of withhdrawal from a two-laycred fluid were conducted by a number of authors both theoretically and experientally.