Quantitative and qualitative studies in seven forests in the Dyje river alluvium influenced to different extents by inundations showed a negative impact of spring overflow water on millipede (Diplopoda), centipede (Chilopoda) and terrestrial isopod (Oniscidea) assemblages. Number of species, densities and epigeic activities (pitfall trapping) of millipedes decreased from non-flooded to flooded forests, however epigeic activities of centipedes and terrestrial isopods were higher at flooded sites and culminated in the time of spring flood. The most flooded forests were characterised by the presence of the millipedes Polydesmus denticulatus, Leptoiulus cibdellus and Julus scanicus, and the centipedes Lithobius curtipes and Lamyctes fulvicornis, the species in different way able to survive immersion.