АНАЛИЗ СОВРЕМЕННОГО СОСТОЯНИЯ ВОДНЫХ РЕСУРСОВ БАССЕЙНОВ РЕК БОЛЬШОЙ ЕГОРЛЫК И ЗАПАДНЫЙ МАНЫЧ, ИСПОЛЬЗУЕМЫХ ДЛЯ ОРОШЕНИЯ

Abstract

Purpose: to study the current state of water resources of the Bolshoy Egorlyk and Western Manych river basins used for irrigation purposes. Materials and methods: on the basis of modern research methods using statistical data, an analysis of runoff volume used for land irrigation and the volume of recirculated water from irrigation to natural surface water bodies of the Bolshoy Egorlyk and Western Manych rivers was made. Results. The analysis carried out showed that the largest water withdrawals from the river basins are made in June-July. On the section of the river Bolshoy Egorlyk from the Novotroitskoe reservoir to the border of the Rostov region and the Stavropol Territory, the total water withdrawal is 103.66 million m³/year, the main water consumers are irrigation and pond fish farming. From the border of Rostov region and Stavropol Territory to the mouth, water is withdrawn from surface sources only for irrigation. Water withdrawal on the site on the Western Manych river from the Novomanychskaya dam to the Proletarsky waterworks for irrigation needs is currently not being produced. The total water withdrawal from the Western Manych river from the Proletarsky to the Veselovsky waterworks is 256.14 million m³/year, the main water consumption is for irrigation. Conclusions. The current state of water resources of the Bolshoy Egorlyk and Western Manych rivers used for irrigation of agricultural land, is characterized as satisfactory. An increase in the level of irrigation development is possible during modernization and reconstruction of irrigation systems and structures, the installation of protective coatings to eliminate seepage losses, as well as equipping structures with water distribution automation systems and hydrometric devices.