Abstract
The study presents variation in river runoff in Poland in relation to precipitation and air temperature. The annual runoff value was analysed in average, warm wet, warm dry, cold dry, and cold wet years, categorized on the basis of average annual air temperature and annual precipitation totals.
In addition, a statistical mathematical model of annual runoff was developed as a function of input variables – temperature and precipitation in the warm half and cold half of the year. Statistically significant differences were demonstrated between the runoff values for warm dry years, average years, and cold wet years.