The data set contains the water depths in the flood areas. Water depths are provided for three flood scenarios (low (Lo), medium (Me), and high probability (Hi)) of riverine (RW) and coastal flooding (CW). The water depths are divided into five classes (0-0.5 m (1), 0.5-1 m (2), 1-2 m (3), 2-4 m (4) and 4 m). In addition, the water depths are divided into three areas: flood area (1), information flood area (2) and flood protection area (3). These two classifications are summarized in the "T_class" attribute. The first number of the attribute "T_class" indicates which area it is and the second number indicates the water depth class. E.g. T_class = 23 denotes a flood area with a water depth of 1.0 - 2.0 m. The flood depth of rivers and inland waters is the difference between the water level above sea level and the water bottom above sea level. The flooding depth of coastal waters is the difference between the seabed above sea level and the nautical chart zero plus the tide height. The Federal Institute of Hydrology (BfG) manages the data for reporting on various water-related EC environmental directives in the national water reporting portal (WasserBLIcK) on behalf of the water management authorities in Germany. Based on this data, the BfG provides selected map and data services in coordination with the State Water Working Group (LAWA). The services provided here are based on nationally homogenized data sets. The timeliness of the data is checked by the relevant authorities in connection with the completion of a reporting cycle and the data set is updated if necessary. There is therefore no guarantee that the most current data set from the responsible authorities will be found here. Other administrative levels in Germany (state, district, district, municipality) may provide services on this topic with a higher spatial and temporal resolution.
