Contribution of glacial and melted snow runoff in the annual flow of the Fandarya river
The article provides an assessment of the main runoff components (melted snow, glacial and ground) on the Fandarya River for the period from 2000 to 2019. The analysis of the river runoff components, the period of melting of snow cover and glaciers, as well as the proportions of the supply source in the annual runoff was carried out for three years (low-water, high-water, and average in water content). The analysis showed that in dry years the volume of glacial runoff is 1.7-2.4 times less than in average and high-water years, respectively. The volume of melted snow runoff is 1.5 times less than in a high-water year. In the summer months, the Fandarya River runoff is formed by melted glacial waters and is used for irrigation. In dry years, the runoff due to the melting of glaciers is low, which can lead to hydrological drought and a shortage of water for irrigating farmland in the basins of the Fandarya and Zeravshan rivers.