О ТЕХНИЧЕСКОМ СОСТОЯНИИ ПУНКТОВ ВОДОУЧЕТА НА ОТКРЫТОЙ ОРОСИТЕЛЬНОЙ СЕТИ

Abstract

Purpose: to draw attention to the technical condition of water metering stations at the open irrigation network of reclamation systems and propose to use a “fixed channel” type hydrometric structure as a measuring instrument. Discussion. As the analysis of the information received from the regional departments of land reclamation and agricultural water supply showed, in recent years there has been a significant decrease in the number and level of technical condition of water metering stations in our country. According to the monitoring data of 2018 on the hydroreclamation systems of state operating organizations, 48 % of water metering stations were recognized as operational (were in good or satisfactory condition), 52 % were in non-operative state and required reconstruction or repair. Only 9 % of water accounting stations were equipped with water meters and special technological equipment, and 39 % of water metering stations did not even have such a simple measuring instrument as a hydrometric gauge. At present, due to the shortage of material resources, it is not necessary to expect a radical restructuring in equipping water metering stations with water accounting devices, and therefore, it may be right to choose cheaper and more accessible means and methods of measurement for open canals of reclamation systems. Conclusions. The main problem currently faced by water users and water consumers in the open network of reclamation systems is the lack of funds necessary for reconstruction or construction new water metering stations and equipping them with modern devices. It is also important that there is no normative documentation that helps in the construction and operation of water metering facilities. The experience of using gauging facilities in Russia and Central Asia has shown that the most common means of measuring water flow in the open channel canal (without flow compression) are “fixed channel” structures, as the most reliable and time-tested.