“…Fluctuations of the Yesil river levels over low water within the suburban zone of Nur-Sultan are 4.5-5 m, of the Nura river -2.5-6 m [6,20]. The runoff of the rivers goes through significant fluctuations, both in the intra-annual and interannual context [21]. The average long-term flow rate of the river Yesil near the Volgodonovka village is 3.49 m 3 /s, of the river Nura near the R. Koshkarbayev village is 21 m 3 /s (1973-2015) [8,9].…”