In previous years the river Krems  repeatedly overflowed its river banks and caused catastrophic flood damages.

• It was deemed necessary to provide flood protection for a 100 year flood event.
• Preservation of multifunctionality of the river Krems where it flowed through urban areas was necessary.

Over 6km of flood protection measures were constructed, with the majority located in a dense settled town area (city infrastructure, limited space availability, varied usage demands on urban river waters) and it puts specific demands on the design and construction.

• Rehabilitation and an increased elevation of existing river walls as well as river bed sealing and construction of flood protection walls in the area of existing dams.
• River construction measures as optimisation of the river bed slope and the adjustment of corss sectional flow areas in order to meet hydraulic, ecological and urban demands.
• Construction of flood protection walls with removeable barriers for access to the river.
• Construction of 3 new bridges an footbridges.
• The removal of two wiers and the installation of fish passes.
• The adaption of existing transport and services infrastructure.
• Renaturalisation of the existing "hard" river bed and adjacent overflow areas.

• Flow modelling
• Danger zone designation
• Variants investigation
• Design for building permission
• Funding development
• Detail design
• Procurement
• Contracting
• Project management
• Construction supervision
• Final acceptance
• Residual risk consideration
• Emergency planning

• Client: Municipality Mautern an der Donau
• Funding body: Bund und Land NÖ
• Investment volume: € 6.950.000,–
• Commencement of construction: September 2006
• Functional capability: December 2007
• Construction completion: September 2009
• Contact person: Jörg Handhofer, MSc