DEVELOPMENT OF AN EFFECTIVE WATER ACCOUNTING METHOD FOR IRRIGATION SYSTEMS FOR AUTOMATED WATER RESOURCE MANAGEMENT SYSTEMS

Currently, due to the increasing trend of water scarcity, it is necessary to use water resources efficiently and to develop and implement effective water accounting methods and automated water resource management systems. This study aims to develop an effective and adequate method, compared to existing ones, for calculating water flow for automated water resource management systems. Existing groups of direct and indirect methods and tools for water accounting were analyzed, and their inaccuracies, which lead to reduced precision, along with certain limitations, were identified. For more accurate and adequate water accounting in conditions of uneven, gradually varying water movement in a non-prismatic channel with horizontal and reverse bed slopes, an effective water accounting method is proposed. The equations used for a more accurate calculation of water volumes in the channels of irrigation systems in various water flow regimes based on the developed computational scheme for uneven, gradually varying water movement are provided. The proposed method was tested under the conditions of the K-19 channel in the Turkestan region and demonstrated its efficiency and required level of accuracy.