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Authority for the Environment, Climate, Energy and Agriculture

Get information on how to reduce damage caused by heavy rain

A team of experts from the environmental agency and Hamburg Water provides information on heavy rain prevention. The aim is to keep the damage that could be caused by heavy rain events in the city as low as possible.

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Detailed description

As climate change progresses, the frequency and intensity of heavy rain events will increase. Heavy rain is defined as precipitation in which a large amount of rain falls in a very short period of time. The amount of water can exceed the capacity of the sewer network, ditches, and private and public property drainage systems and waterways. The water then threatens to flow onto properties via various flow paths and, among other things, enter buildings. The water causes damage to property and infrastructure.

The administration, but also you as citizens, must adapt to this development. In Hamburg, the "RISA" (Rain Infrastructure Adaptation) project is developing action plans for heavy rain events. The aim is to keep the damage that could be caused by heavy rain events as low as possible. A team of experts from the environmental agency and Hamburg Water will provide you with information on heavy rain prevention.

 

Information

Prerequisites

No

Documents required

No

Please note

To protect your property from damage caused by heavy rain, it is important to use appropriate protective devices that are tailored to the specific location and shape of your property or building.

Some protective measures, such as protection against backflow or protection against water entering the building from underground and, to a certain extent, above ground, are mandatory for you if you own land or a house. If these are missing, your drainage system does not comply with the Hamburg Wastewater Act or the generally accepted rules of technology. Insurance companies can then rightly limit or completely refuse to pay compensation.

In the case of heavy rain and the resulting flooding, building insurance is not sufficient. Damage caused by heavy rain can only be insured with additional natural hazard insurance.

Deadlines

No

Procedure

  • You can find out about options for preparing for heavy rain using the links provided.
  • If you have any further questions, please contact the relevant department.

Processing time

No

Fees

The information is free for you.

Legal remedies

This is for your information only. No legal recourse is provided.

Legal basis

§ 1 Hamburg Climate Protection Act (HmbKliSchG)

www.landesrecht-hamburg.de/bsha/document/jlr-KlimaSchGHA2020V7P1


Section 5 paragraph 2 of the Water Resources Act (WHG)

www.gesetze-im-internet.de/whg_2009/__5.html


§ 8 Climate Adaptation Act (KAnG)

Address and contact information

Authority for the Environment, Climate, Energy and Agriculture

We have a limited number of customer parking spaces. To reserve a parking space, please contact our receptionist by e-mail at zugang@bsw.hamburg.de or by telephone on +49 40 428 40 - 50 50. Our working hours are: Monday to Thursday from 8:00 a.m. to 3:15 p.m , Friday from 8 a.m. to 1:30 p.m.

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Keywords: Flooding Sewerage drainage dam Precipitation

Last updated: 13.02.2025