Abstract
For river discharge naturalization, having quality information about anthropogenic influences affecting measurements is of high importance. In Czechia, monthly data on water abstraction and water disposal exist, and the time period covered by this information spans from 1979 to current times.
However, data sources vary, sometimes do not correspond to each other, and, when it comes to updating after finding errors, they are not well centralized. This contribution warns against this situation and suggests improvements.