What do you think about my English? The correlation between the changes of the annual and seasonal Ob river runoff and the main climatic characteristics is considered. For study climate characteristics and their impact on the river runoff the catchment area was divided into 4 private river basins of the Ob river system: Tobol, Ishim, Irtysh, upper and middle Ob. The analysis of the significance of correlations of Ob river runoff volumes with the amount of precipitation and temperatures in the territories of private basins is performed. The features of the influence of climate characteristics of the parts of Ob catchment area on the runoff in the lower flow of the river are determined. It is proving that the water content of the year is determined primarily by the water content of the warm half-year. River runoff in the warm half of the year is formed mainly by snow accumulated in the catchment area in winter, and liquid precipitation for the warm half-year. Local zones of influence of solid precipitation on the lower Ob river runoff during the warm half-year were determined. The most significant for the runoff during warm half-year is amount of solid precipitation into the Tobol and upper and middle Ob basins. A significant part of the years of extremely high water content for the Ob river can be explained by the coincidence of the maximum solid precipitation in these basins. In the cold half-year, solid precipitation that falls the catchment area are not participate in the formation of runoff. An increase in the number of winter thaws was observed on the territories of all the river basins. It contributes to partial snow melting in the cold half-year and leading to an increase in winter water content. In General, the Ob river runoff during the warm half of the year has a closer relationship with climate characteristics than the runoff during cold half of the year.