Author(s): Sebastian Koslitz; Joachim Lengricht
Linked Author(s): Joachim Lengricht
Keywords: No Keywords
Abstract: The Water Framework Directive of the European Union introduces a new approach to a most cost-effective and sustainable way of any measures to water resources and their management. Although the water framework directive defines the good ecological status of the water bodies mainly by biological characteristics other distinguishing marks have been isolated indicating that hydraulic engineering will remain as important interface for a sustainable water and river basin management. Since the implementation of the framework it has been discussed whether the influence of aquatic sediments are taken into account in a sufficient manner, i.e. the increasing impact of fine sediments as carrier and potential source of pollution is regarded adequately. Beside the analytic procedures, eco-system-modelling helps to analyse the effect to the structure of the aquatic ecological system by means of the sediments and leads to a combination of simulation technologies and measuring techniques. The lowland river Karthane (which is an Elbe tributary) in the young moraine area of the Prignitz (north-west Brandenburg, Germany) as a heavily modified small lowland water body was investigated. To obtain suspended sediment data a controlled flood event was initiated and triggered using an existing weir. Numerical modelling with Hec-Ras®and SRH-1D®with the experimental data obtained leads to information about the transport of (remobilised) fine sediments, deposition and erosion terms in the studied reach in order to develop an eco-system approach and to support the coherent implementation of the European Water Framework Directive and to execute an advanced river basin management.
Year: 2009