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A challenge for the next years is the improvement of the hydropower sustainability following the basic principles of the integrated water resources management issued by the WFD. Indeed, although WFD has been fully introduced within the national laws, a further period of experimentation and diffusion of best practice should be needed to put its basic principles into practice. In this frame a means to improve hydropower sustainability should pass through testing reservoirs operational modalities which take into account all the possible water needs at a wider scale. After having spent some years developing and applying tools to support hydroelectric reservoirs management issues, we decided to set up one case study where those tools could be used in combination, in an attempt to carry out an example of integrated approach to the river basin management. The selected site was Lake Idro, a natural lake regulated through an artificial weir for agricultural and hydropower use, whose inflowing water is regulated in turn by a number of hydroelectric upstream dams. Along with the quantitative aspect, water quality and ecological status of the lake are considered to have worsened in last years. Although the lake has been smoothly regulated for decades, conflicts among public and private stakeholders have arisen more recently, due to the increase in ecological requirements, public awareness of environmental issues and fragmentation of water exploiters and regulatory boards throughout the hydrographic basin. The project core is modelling water quality, hydrology and hydraulic of the watershed-lake system in order to identify firstly which changes of lake regulation could help to reduce nasty water conditions and then to study the consequences that such changes could have in relation to flood prevention, water availability and electrical production. The following tools will be applied: a hydrological-hydraulic watershed modelling tool, a lake hydrodynamic and water quality model (using data from in-lake monitoring station), a simplified tool for the optimization of hydroelectric plant. Prior to the start up, the project has been presented to the main stakeholders in order to share with them both the goal and the achievements of the research. Agreements have been reached with the main institutional subjects (Regione Lombardia and Provincia di Trento) for the sharing of data and information produced within each own institutional tasks. The present paper is aimed at the presentation of the start up of the Lake Idro project.
31 Dicembre 2011
Studi su potenziali sviluppi delle energie rinnovabili (P04PROD)