SUMMARY
The questions of transfer of radio-active sedimentov in reservoirs are examined. The basis for the design of diphasic flows is solution of the Navier-Stokes equations system and turbulent motion of liquid in the limited area of reservoir (rivers). For solution of equations system of radioactive pollution convection transfer use approximation of the corresponding differential equations in partial differentiations by finite-difference schemes. The scientific novelty of research result is the design of diphasic flows in a turbulent stream in reservoirs. The method differs from known that it is based on principle of solution of the Navier-Stokes equations system and turbulent motion of liquid in the limited area of reservoir (rivers). For solution of equations system of radioactive pollution convection transfer use approximation of the corresponding differential equations in partial differentiations by finite-difference schemes.