Sontheim starts construction of the fourth flood retention basin!
Construction of the fourth flood retention basin in Sontheim begins in order to improve flood protection on the Günz by 2030.

Sontheim starts construction of the fourth flood retention basin!
An important construction project began in Sontheim on Tuesday: the fourth flood retention basin on the Günz. Environment Minister Thorsten Glauber gave the official starting signal for this project, which is intended not only to improve local protection against flooding, but also to offer a sustainable solution for the region. The aim is to optimize the flood situation for the population in the Günztal and to find an answer to the serious consequences of the June flood in 2024, which hit many people hard. Loud Augsburger Allgemeine The total investment is around 75 million euros.
The new retention basin will have an impressive capacity of 1.35 million cubic meters of water. In total, the project includes five flood retention basins, three of which are already in operation in Eldern, Engetried and Frechenrieden. “With these measures we want to significantly improve flood protection in the region and minimize the risks for the local population,” said the minister’s creed. All pools are scheduled to be completed by 2030, with the last pool in Westerheim planned for 2027.
Ecological expansion and local protective measures
Another important element of the project is the ecological upgrading of the Günz and its tributaries. In addition to the retention basins, local flood protection measures are also part of the project. This comprehensive concept is intended to ensure that the region is protected from the consequences of flooding not only in the short term, but also in the long term. According to information from City News The aim is to retain a total of around 7.5 million cubic meters of water.
The efficiency of these retention basins is in the context of the Bavarian Water Action Program 2030. The underlying flood reduction measures, such as retention in the area and water renaturation, are crucial. In addition to technical measures such as flood retention basins, experts also recommend the creation of natural retention systems in order to have a lasting influence on the formation of runoff. This is backed up by targeted data and studies such as the Bavarian State Office for the Environment shows.
The flood retention project in Sontheim is a big step towards a safer future for the region. With a strong focus on sustainable protection and ecological expansion, we not only work against acute flood risks, but also raise awareness of environmental protection and the need for effective protective measures. The cooperation in the municipal special-purpose association “Flood Protection Günztal” also guarantees the operation of the five retention basins for the next 100 years.