**4. Conclusion**

Water supply of rice irrigation systems in conditions of water scarcity is an extremely difficult task that requires improving the management of the entire structure of water use and irrigation technologies. The main direction in solving this problem is seen in the application of mathematical modeling and the latest digital technologies of communication and monitoring systems for collecting and processing information and integrating fundamental and applied disciplines.

The proposed approach to solving the problem of improving water supply and water use for rice irrigation systems is based on the development of an integrated system of tools for managing the distribution of water resources, considering the efficiency of water use by agricultural producers. In practical terms, a centralized water resources management system ensures high efficiency of their use in the implementation of the current scenario. On the other hand, the described approach makes it possible to identify the weakest links in water use, differentiated for each irrigation system, and to increase the efficiency of water use by agricultural producers. But the full solution of this set of tasks is still very far away, and we are still only at the very beginning of the planned path.

The performed studies have shown the possibility of studying the dynamics of hydrological processes under the influence of reclamation factors, analyzing water use in rice cultivation in detail, relying on models and calculation schemes. The main arrays of subject information obtained using numerical experiments on production data and standard hydrometeorological information were able to compensate for direct field measurements of water flows in the first approximation and allowed us to assess the state of water use in rice irrigation systems of the Lower Kuban.
