Model based management of a reservoir system

The main goals of reservoir management systems consist in prevention against flood water damages, the catchment of raw water and keeping all of the quality parameters within their limits besides controlling the water flows. In consideration of these goals a system model of the complete reservoir system Ohra-Schmalwasser-Tambach Dietharz was developed. This model has been used to develop optimised strategies for minimisation of raw water production cost, for maximisation of electrical energy production and to prevent flood situations, as well. Therefore a proper forecast of the inflow to the reservoir from the catchment areas (especially flooding rivers) and the biological processes in the reservoir is important. The inflow forecast model is based on the catchment area model of Lorent and Gevers. It uses area precipitation, water supply from the snow cover, evapotranspiration and soil wetness data to calculate the amount of flow in the rivers. The other aim of the project is to ensure the raw water quality using quality models, as well. Then an quality driven raw water supply will be possible.