Floods in Poland in the 11th–18th centuries and their characteristics

The database is a part of interdisciplinary work conducted by historians, climatologists, and hydrologist within the NCN project entitled “The occurrence of extreme weather, climate and water events in Poland from the 11th to 18th centuries in the light of multiproxy data”. The database provides a piece of valuable comprehensive information about historical floods in the period 1001–1800 for the current boundary of Poland. Every flood was attributed to one of the six regions: Baltic Coast and Pomerania, Masuria-Podlasie, Greater Poland, Masovia, Silesia and Lesser Poland, and also one of the three main river basins (Baltic Coast, Vistula, and Oder River basins). The database was created based on various documentary sources such as handwritten and unpublished sources, published sources, and so-called “secondary literature”. The database contains important and valuable detailed information about the occurrence of floods (the location, time, duration and the author’s indexation for intensity and origin of the floods), as well as the exact textual content of the original weather note, the name of the source, and an evaluation of the source’s quality.