Out of 223 river water bodies on the Tisza River and its tributaries, 75 were designated as heavily modified (75 with final status, 4 with provisional status and 2 have unknown status) representing 34% of the total river water bodies. In the Ukrainian part, a large part of the landfills for solid municipal waste have exceeded their design capacity. Flood events, including the floods in August 2002, highlighted the problem of inundation of landfills, dump sites and storage facilities where harmful substances are deposited.