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Water Practice & Technology © IWA Publishing 2006  |  doi10.2166/wpt.2006.004

Development of a decision support system for integrated water resources management in intensively used small watersheds

H. Sieker1, S. Bandermann1, K. Schröter2, M. Ostrowski2, A. Leichtfuss3, W. Schmidt4, E. Thiel4, C. Peters5 and R. Mühleck5

1Ingenieurgesellschaft Prof. Dr. Sieker mbH, Rennbahnalle 109A, 15366 Hoppegarten bei Berlin, Germany
2Darmstadt University of Technology, Institute for Hydraulics and Water Resources Engineering, Section for Hydrology and Water Management, Petersenstrasse 13; 64287 Darmstadt; Germany
3SYDRO CONSULT, Mathildenplatz 8; 64283 Darmstadt; Germany
4Saxonian State Institute of Agriculture, P.O. Box 221161, 04131 Leipzig, Germany
5 Berlin University of Technology (TU), Inst. for. technischen Umweltschutz, Straße des 17. Jun 135, 10623 Berlin, Germany
ABSTRACT

The main objective of the WSM300 project is the development of a methodology which guides and supports an improved water resources management on the level of small watersheds (up to 300 km²). The developed methodology is to be implemented into a software based tool within the framework of a generic Decision Support System (DSS). (Leichtfuss 2003, Schröter 2004). Core of the DSS is a "decision matrix", which has been implemented as a web based application (www.wsm300.de). The management objectives are represented by the indicators labeling the rows.

They will be the result of a discussion of the objectives and problems in the specific sub-basin, which is supported by the catalogue of indicators. The matrix, once the labels are defined, serves as a plot for the planning process, defining clearly which objectives have to be considered and which indicator-values have to be calculated. The DSS further includes a concept and tools for the combination of existing software components and supports the processing of model-outputs to indicator-values. Filled with the indicator-values, the matrix allows a comparison of the scenarios and provides a good basis for a decision.

If desired, multi-criteria decision aid methods can further help find the optimal scenario and mediate between stakeholders. As a co-product of the web-based DSS, the "River-Information-System" was established informing the public about the newest developments in their catchment.

Keywords: Decision support; Web-based water management; Scenarios; Geographical Information System; Integrated modeling; Indicators; Assessment


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