The construction of the flood retention reservoir on the Sulzberger Bach stream in Oberallgäu is a measure designed to protect the town centre of Sulzberg from flooding in the future. In the last few years, even lesser storm events have revealed the watercourse to be a high-water threat to the town whose name it shares.
The Sulzberger Bach stream will be dammed upstream for the FCR in the area of two villages, Ried and Obermindendorf, so that a flood retention zone is created in the terrain.