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The Video of the Stadtwerke Karlsruhe shows the future project of the watersupply treatment plant Mörscher Wald

[Translate to Englisch:] Das Video des Architekten Martin Willms zeigt den Baufortschritt des Wasserwerks

It has been completed: The new construction of the Mörscher Wald waterworks, for which the ground-breaking ceremony took place in November 2018. Commissioning is currently underway and the official inauguration will take place in July 2022. The new waterworks is equipped with state-of-the-art technology and now replaces the 70-year-old plant in the immediate vicinity on a directly adjacent plot of land. After commissioning of the new plant, the existing one will be completely dismantled. For species protection reasons, demolition will not take place until September 2022 and the area will be reforested. In future, the new waterworks will ensure the vital supply of potable water for the city of Karlsruhe and the surrounding communities. Calculations of the potable water demand until 2040 showed that, due to climate change and the predicted population growth, a capacity of 60,000 m³/d or 3,000 m³/h will have to be maintained in the future as the maximum capacity for raw water extraction and treatment. The architectural design of the building provides for a harmonious integration into the greenery. As a partner in a consortium, DAHLEM has been commissioned with the planning of the civil engineering works, the building interiors and the outdoor facilities. A BIM-oriented 3D model was created for the building design.

Heavy rainfall events have caused considerable damage throughout Germany in recent years. Municipal decision-makers see themselves more and more obliged to assess the flood risks and derive precautionary concepts in the short term. The flow path analyses used so far for large-scale rough analyses have methodological limitations. Our colleague, Dipl.-Ing. Tim Schneider from Darmstadt, developed on a freelance basis "SplashTool" - software that no longer has many of these limitations. SplashTool was used for the first time for a volume-based flow path analysis and rough analysis over an area of 200 km² for the city of Kaiserslautern and is now used as a tool in numerous projects for heavy rainfall risk management.

Figure l.: Map generated with the help of SplashTool
Further information on SplashTool:

Heavy rainfall hazard maps of the city of Kaiserslautern:

Article in the trade journal wwt Water Management Water Technology,
March 2022 issue, p.36 - 39

As part of the Emscher Conversion generation project, the Emschergenossenschaft redesigned also the Katernberger Bach stream, which, for the most of part, has been flowing through the Katernberg district of Essen since the 1960s. Along a stretch of 1,100 metres, the stream was given new space next to the old watercourse route and is now running open along 1.2 kilometres. The opening of the stream and the separation of clean and wastewater as well as the renaturation of obstructed drainage profiles enable an ecological improvement of the watercourse. In addition to the river engineering plans, bed slides, fords and a bridge as well as several culvert structures have been implemented. Accompanying measures along the ecologically revitalized watercourse enhance the green corridor and create a high recreational quality for the Katernberg district. The Emschergenossenschaft commissioned DAHLEM with the project planning, structural design, technical equipment and construction management for the watercourse conversion.

The illustration shows a visualisation of an accompanying measure:
Waterside playground (Hoff Landscape Architects, Essen).


[Translate to Englisch:]

[Translate to Englisch:]

The focus of this year's IWASA symposium in the fight against floods is increasingly moving in the direction of heavy rain and flash flood events. In the past two decades, the formerly pure flood protection has evolved into flood risk management. Experts and the public focused on this development, accompanied by the requirements of the EU Flood Directive, in particular flood events on rivers, triggered by the flood events on the Rhine (1993 and 1995), Oder (1997) and Elbe (2002 and 2013). DAHLEM is represented with an information stand at the conference. You are welcome to discuss the high relevance of the topic, due to new requirements, with experienced colleagues from our Darmstadt office.

Company News

There were 6,283 running enthusiasts who finished the Essen 2022 corporate run in beautiful weather. This is already the 10th Essen corporate run for the DAHLEM running community. In glorious running weather, the Essen 2022 corporate run was on the agenda for over 8,800 registered participants on Wednesday, 22nd June. The runners covered a five-kilometre course, from Huyssenallee at the Philharmonie to the Tummelwiese at the Grugabad. And once again the motto was: “With each other - for each other”. A highly motivated DAHLEM team went to the start again. "Taking part and reaching the finishing line is our motto". From 7:00 p.m. the starting line was filled with running enthusiasts on Huyssenallee. The distance could be covered running or walking. It is not about the competition between the companies, here everyone comes together to enjoy the sporting event with a lot of fun and the highest level of commitment.

Since May 2021, DAHLEM has started supporting KUER.NRW as a specialist. KUER.NRW is a funding programme implemented by pro Ruhrgebiet e.V. and Business Angels Netzwerk Deutschland (BAND) on behalf of the Ministry of Environment, Agriculture, Nature and Consumer Protection of the State of NRW. KUER supports "green startups" in North Rhine-Westphalia, founders and startups having an innovative product, process or service idea with market potential in the KUER sectors of climate, environment, energy and resource conservation. Specially accredited KUER mentors, specialists, industry experts and angel investors accompany them through all phases of their startup - from idea generation and the preparation of the business plan to company creation, market launch and financing, tailored to their specific individual needs.

The rising number of extreme weather events increases the risk of flooding, also on company premises and in buildings. Rising costs and fees place an additional burden on companies. It is therefore worth investing in intelligent water management: How can stormwater be collected and used as process water? How can water be infiltrated instead of being discharged into the sewer system? A variety of often easy-to-implement measures prevent damage and save costs. These and other questions were discussed at an online cooperation event organized by Business Metropole Ruhr GmbH and the Emscher Association for Water Management/Lipper Association (Emschergenossenschaft/Lippeverband). Business Metropole Ruhr markets the Ruhr region as a business location and, among other things, supports companies with future-oriented, environmentally-friendly technologies. Professor Dr. Peter Höppe, former head of GEO Risks Research/Corporate Climate Centre Munich, opened the discussion round with his lecture "Too much and too little water - climate change aggravates the extremes", which was accompanied by representatives of the business community and local authorities and during which more than 100 live participants were able to ask questions to the speakers. Holger Ackermann, the responsible person  for water management from DAHLEM, was a participant in the four-person panel. In his view, climate adaptation measures are not an expression of ideology, but of foresight and common sense.

Link to the event (start of discussion from minute 30')