Abstract
The general characteristic of water resources of the Chernobyl exclusion zone is presented. Methods of radiological monitoring of groundwater in Chernobyl exclusion zone is given. Monitoring results can be used for prediction the state of pollution and they are the basis for calculations of radionuclide migration in the Dnipro cascade. In closed ponds of exclusion zone for many years will be kept high levels of water pollution. The main factor in the selfcleaning of none closed water objects from pollution are internal processes and sedimentation in the soil. Water objects to compared with closed ponds relatively quickly cleared from radionuclides by constant washout
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