Purpose: to obtain field data on water discharge in the Azov Main Canal using an acoustic Doppler profiler (ADCP) for subsequent verification of the developed hydrodynamic model.
Materials and methods. Measurements were carried out at 17 cross sections of the canal using an autonomous hydrological complex based on the APACHE 4 Pro unmanned floating vehicle and the CHCNAV RiverStar RS-1200 acoustic Doppler profiler. Measurements were carried out manually (due to the narrowness of the canal) in accordance with RD 52.08.767-2012, processing was performed in the EasySail and HydroProfiler applications.
Results and discussion. All hydrometric measurements were carried out within one day with known operating parameters of the head pumping station and the canal. The greatest share of time during field work was taken up by: moving along the route between the cross sections; preparing the ADCP for work; its descent into the canal and extraction. According to the data obtained, the flow rate varies from 7.817 m³/s at the beginning of the route to zero at its end. Zones of intense water extraction (a decrease of ~2.5 m³/s between siphon No. 1 and PK276) and hydraulic losses (siphon No. 6) were identified.
Conclusions. The data obtained made it possible to adjust the developed hydrodynamic model in terms of selecting the roughness coefficient and to identify errors in the initial data characterizing the parameters of the canal and water supply structures. The use of ADCP demonstrated high efficiency in studying the hydrodynamic characteristics of the irrigation canal, ensuring the collection of spatially detailed data necessary for calibration and verification of the numerical model.
hydrological and hydrographic studies, acoustic Doppler current profiler (ADCP), unmanned watercraft, water resources monitoring, flow rate
Ryzhakov A. N., Martynov D. V. Practical experience of using an acoustic Doppler profiler for measuring water flow using the example of the Azov main canal. Ways of Increasing the Efficiency of Irrigated Agriculture. 2026;99(2):35–54. (In Russ.).
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