Ecological Systems and Devices Annotation << Back Mathematical modeling of hydro-dynamical flows in narrow canals with due regard for bottom relief Hvedelidze Z.V., Davitashvili T.P., Samharadze I.N. In present report the peculiarities of the hydro-dynamical flows in a narrow canals with small slope bottom, at low velocities of the stream, have been studied. It has been shown that the velocity and power of the currents are inversely proportional to the square of the parameter characterized the special features of the canal’s bottom . In the existing vortex stream the pres-sure decreases inversely proportional to the distance from the center. The present theory gives possibility to determine the velocity of flows and spreading of pollutants in the rivers or intermountain plains. Some results obtained from the solution of equation of diffusion by using the hydrological data and orographic characters of the river Rioni have been presented.