Chronological lists of information on floods play an important role in the framework of research on climate and natural disasters. Such a list for Żuławy for the years 1428–1690 was compiled by Fabian Horn (d. 3 July 1692), a councillor (from 1670) and mayor of Elbląg. His list contains not only information known from earlier works (Schütz, Henneberger, Waisselius) and sources (Sigismund Meienreis, Gottfried Zamehl), but also original notes, beginning in 1661, including facts about the causes of the floods and their effects. The notes were probably based on direct observations (considering that Horn held the offices of municipal treasurer for external affairs and land judge in the 1670s) as well as (written?) information he received as mayor. From the point of view of the study of the history of climate and natural disasters, the source material presented is of regional interest and is quite monothematic. However, it can be useful for comparative studies of regions similar to Żuławy (in the Netherlands and northern Germany) and those located on the border of climatic zones (continental and oceanic). Moreover, it brings information on the functioning of the flood control and drainage system in Żuławy.