Flood warning in Hanover: Rain clamps endanger the residents!

On February 28, 2025, important information about the flood levels of the leash in Hanover was announced. The two main flows in the state capital are the leash and the Ihme. The leash rises in the southern Eichsfeld and flows north of Schwarmstedt into the Aller, while the IHME is created in the foreland and flows into a leash north of Hanover. The IHME passes the Ricklinger gravel pond in the landscape protection area.

In Hanover, the levels of the leash are monitored at the Herrenhausen and Neustadt locations. Current flood warnings and information are available for Lower Saxony. The values ​​for "medium low water" (MNW) and "medium flood" (MHW) are average values ​​that are determined via specified periods. The MNW is calculated from the lowest annual value for over ten years. The flood registration levels include:

• level 1: on -board drainage, occasionally flooding.
• level 2: flooding of agricultural and forestry areas.
• level 3: flooding of land, streets and cellars possible.
• level 4: Larger floods in built-up areas, use of water and dam weirs required.

The highest water level of the leash near Hanover was recorded at 644 cm on February 10, 1946. Flood warnings in Germany are regulated in the civil protection and disaster relief law and can be spent by various locations such as the federal government, countries, circles, police or fire brigade. The flood registration services are active in every federal state and warn about various channels, including radio, television and social media, as well as about warning apps.

Current flood information

The website www.pegegelonline.nlwkn.niedersachsen.de offers current data on water levels and information from the flood forecast center for Lower Saxony. The NLWKN carries out flood registration services that aim to inform danger defense authorities in time in the flood.

The regional flood registration services (RHWD) become active on flood -endangered waters in Lower Saxony when registration level 1 is reached on the corresponding levels. There is also a national flood registration service (UhWD) for the catchment area of ​​the Weser, which is carried out in cooperation with the General Directorate of waterways and shipping and accompanies the flood situation up to relaxation. Messages are updated up to five times a day and are also available online. Telephone information can be obtained on 08000007898.