The groundwater runoff of Polish rivers displays considerable regional variations which are also manifested in the time distribution. The spatial distribution depends upon geological structure of the area. Its characteristic features together with precipitation account for conditions of groundwater runoff based on permeability and natural drainage. The time and spatial variability of groundwater runoff is due to a joint effect of environmental and hydroclimatologic factors such as rainfall, snowmelting, evaporation.
- Received September 29, 1977.
- © IWA Publishing 1977