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Niederpöbel flood retention basin

On 14-11-2011, the plan for the construction of the Niederpöbel flood retention basin has been approved of by the Dresden State Directorate. Both INROS LACKNER AG and G.U.B. Ingenieur AG have been responsible for the planning. INROS LACKNER's scope of services not only comprised the planning of civil engineering structures, traffic facilities and technical equipment, but also the project management of the environmental planning, including the elaboration of individual services (e.g. landscape conservation plan, ecological mapping, expertise on species protection, documents on the fauna and flora derogation decision) and the approval-related assistance of the planning during the plan approval procedure. Upon request of the State Dam Authority of the Free State of Saxony, the new flood retention basin will be constructed in order to improve flood protection within the Red Weißeritz catchment area. The retention basin is a large dam according to DIN 19700, with a dam height of 28 m. It is made of a rockfill embankment with an asphalt concrete core seal and will be constructed at the narrowest point of the Pöbel valley, close to the Niederpöbel district.

The flood protection structure has been designed for a flood event statistically occurring every one hundred years. A storage surface of 13 hectares will allow for a retention volume of approximately 1.2 million cubic metres and flood the state road S 183 on a length of approximately 1.2 km. The location of the Niederpöbel flood retention basin was chosen on the basis of the flood prevention concept for the Weißeritz basin. In the past years, flood events frequently occurred in the Eastern Erz Mountains, particularly resulting from heavy precipitation in summer. In 2002, the damages caused within the Red Weißeritz catchment area were particularly serious. With the flood retention basin, the area extending from the Red Weißeritz basin to the Malter dam will then be protected effectively.