The aim of the study was representation of spatial variability of drouhgt hydrogeological periods in the region of Western Pomerania. In this case drought was identified with low-flow groundwater periods calculated Kazimierski’s method. Low-flow groundwater periods were designated long-term groundwater levels of aquifer. The references were the main groundwater levels. Periods of drought were deviled into shallow and deep low-flow groundwater periods. As a results obtained the characteristics of occurrences of drought and maps of spatial variability.