New stormwater overflow basin is built

During heavy rain, the underground sewers quickly fill up. In the worst case, the wastewater then flows directly into the Murg. Stormwater overflow basins relieve the sewage system and wastewater treatment plants during heavy rain. They retain dirt particles so that combined sewage is not discharged unfiltered into rivers. If it does not rain, the wastewater is discharged directly to the wastewater treatment plant. When it rains, on the other hand, the water is temporarily stored in the basin and only then discharged into the Murg.

Due to environmental regulations, the city of Rastatt is required to dissolve the three stormwater overflows already existing in the industrial area and replace them with a new one.

Yes and no. During normal continuous rainfall, the 500-cubic-meter stormwater overflow basin can intercept and drain the water volumes. During heavy but short heavy rain events or even during floods of the Murg river, the water first accumulates on the road surface and only gradually reaches the sewage system. Suitable safeguards against surface water penetration and backwater protection are still urgently recommended for property owners. However, since the sewer pipes will also be doubled in diameter, particularly in Rauentaler Straße, the underground storage for stormwater runoff will be increased overall and water pressure will be reduced.

The stormwater overflow basin is being built at 12/12A Rauentaler Strasse, directly behind the train station. It has a length of around 50 meters, which is roughly the length of a swimming pool, and a width of six meters. The pool will be built completely underground with several access openings so that it can be retrofitted if necessary. The cost of the pool, the technical equipment and the sewer work is around seven million euros, plus around 1.2 million euros for road rehabilitation.

Since a large part of the roadways will have to be torn up due to the underground work, Rauentaler Straße will be thoroughly rebuilt between the junction of Alte Bahnhofstraße and the junction of Lochfeldstraße. In addition, the road surface will be rehabilitated from the Lochfeldstraße intersection to Im Steingerüst Street. The project is divided into four construction phases. Work will start in July at the level of Alte Bahnhofstraße. There will be full closures of Rauentaler Straße in sections. However, deliveries by trucks will still be possible - either coming from the south or the north. During the construction period, a replacement bus stop will be set up at Niederwaldstraße 1.

All information without guarantee. Due to weather conditions and depending on the delivery situation, there may be changes in the time schedule.

On the one hand, the city hopes that the traffic in Rauentaler Straße will be calmed down by narrowing the roadway. On the other hand, it wants to improve the traffic situation for cyclists in general. However, this also eliminates some free parking spaces at the edge of the roadway, which were used in particular by rail commuters. In this context, the city refers to the directly adjacent park-and-ride lots of Deutsche Bahn, which offer sufficient capacity. Citizens also suggested extending the 30-mile zone to the stormwater overflow basin. The administration wants to examine the suggestion.