Simulation of water surface profile of the kizilirmak river (nevsehir province)

Abstract

In recent years, one and two-dimensional hydrodynamic models have been widely used in the simulation of water surface profiles of composite and irregular cross-section open channels. Within the scope of this study, a hydrodynamic model was created with a one-dimensional hydrodynamic module of the Storm Water Management Model (SWMM) on the line of the Gülşehir, Avanos Districts and the Sarıhdır Village of the Kızılırmak River. Within the scope of the project titled “Analysis of Sediment Transport and Accumulation in the Kızılırmak Basin using Field Studies and Numerical Models”, completed in 2017 which was supported by the Nevsehir Haci Bektas Veli University Scientific Research Projects Unit; field studies were carried out at seven different sampling points determined on the Kızılırmak River in the Nevsehir province. In field studies, stream bottom topography and flow measurements were obtained using the Teledyne RD Instruments RiverRay ADCP (Acoustic Doppler Current Profiler) versatile flow meter. In this study, the water surface profiles obtained with the one-dimensional hydrodynamic model were compared with the water surface profiles obtained from the project measurement data. The water depths and average velocities calculated by the model are compared to the measured values from seven sampling points. Although significant differences were detected between the calculated water depths and the measured values, it was observed that the average velocities determined by the model were highly matching the observed values.