The paper shows the possibilities of obtaining data about hydrological and meteorological extremes from official economic evidence about natural disasters recorded at the level of domain, region and land management. It is a new source of information for creating the series of extremes before the beginning of systematic observations. The recording of this data was connected with the applications of the subjects for tax abatement due to damage caused by natural disasters or with the information of the domain managers to their owners about important events at the domain. Records about damage in the Dietrichstein domains of Dolní Kounice and Mikulov in southern Moravia between 1650 and 1849 are analysed. From them it is possible to obtain information about floods, convectional storms, strong winds, early and late frosts. Series of these extremes are presented, further completed by known sources from the area studied. An important increase in extremes took place after the 1760s, which must be related partly to a higher number of preserved records, including the increased bureaucratisation of the state management, partly to the increased climate variability in the final stage of the so-called Little Ice Age.