Peculiarities of the Ion-salt Surface Water Composition of Small Rivers in the Uvat District in the Impact Area of Hydrocarbon Deposits

The study considers the features of transformation of ion-salt surface water composition in some small rivers, Kal’cha, Kachkar, and Tytyim’ega, under conditions of the technogenic pollution on the territory of hydrocarbon production. It is shown that the ion-salt composition of the river water significantly differs for different regimes of the rivers and depends on the degree of their pollution. The greatest water pollution in the small rivers has been observed during a spring flood and a winter low-water period. The values of coefficients K₁ and K₂ for clean and polluted water of the small rivers are determined.