Irrigation potential of small and medium-sized Black sea rivers within Odessa region
DOI:
https://doi.org/10.33730/2310-4678.1.2024.302626Keywords:
irrigation, river runoff, water quality, worst for water quality, risk of deteriorationAbstract
The purpose of the work is to determine the possibility of using the waters of the rivers of the Black Sea region to cover the needs of irrigated agriculture in this region. The article highlights the relevance of the considered problem and the justification of the choice of research direction, selected indicators of irrigation water quality assessment to solve the task. The irrigation potential of the rivers of the Black Sea region within the Odesa region includes the flow of rivers during the warm period of the year, the average water level and low water years with 75% and 95% availability after deducting the ecological flow (75% of the flow in the worst month of the year with 95% availability). The irrigation potential does not include water unsuitable for irrigation due to mineralization. The use of average values of the indicators when assessing the quality of irrigation water leads to the fact that during the warm period of the year, irrigation with substandard water is highly likely. In this regard, the article proposes an assessment of the risk of water quality deterioration based on individual indicators. When performing the work, it was established that the waters of the Black Sea Basin rivers have a mineralization of 1 to 3 g/dm3 and belong to class 3 (highly dangerous for plants), the second part — more than 3 g/dm3 (unsuitable for irrigation water). The average long-term potential of river waters of the basin during the warm period of the year is 56.3 million m3/TPR. This is a very small volume of water. It will be enough to irrigate only 16,100 hectares of land under the condition of chemical melioration of these waters and dilution with water with low mineralization. Therefore, irrigation of agricultural lands in the Black Sea river basin is possible only by using the waters of the Danube and Dniester.
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