title: Generalization of the average annual water runoff of the rivers according to the hydrographic zoning of Ukraine
abstract: Aim of the research is to estimate average annual water runoff of rivers of Ukraine within river basins and sub-basins respectively to the Hydrographic zoning of Ukraine. The territory of Ukraine is divided into hydrographic units - nine areas of river basins and nine sub-basins. Methods of the research - methods of mathematical statistics and statistical analysis of the relations between hydrological variables. Scientific novelty of the research is to process the base of mean annual water disch
journal: Visnyk of V N Karazin Kharkiv National University series Geology Geography Ecology