Ecological and economical potential analysis of the 2-chamber-organismbypass with first practical examination

At the moment organisms can’t migrate in rivers because of obstructing features like weirs. In Austria there are more than 30.000 obstructing features, which interrupt the water continuum. Due to the EU Water Framework Directive in many cases bypasses are needed. Holders of water rights with an obstructing feature have now the problem, that there are no both ecological and econopmical satisfying solutions for restoring the river continuum, because often used systems are in most cases expensive, they need big areas and usually have to be planned individually. The new developed 2-chamber-organismbypass could be a technology without these disadvantages. The considered organism bypass is a fish-lock, with an innovative hydraulic connection, which also enables the use of the leading water flow for energy provision. This feasibility study, which will be carried out from April until December 2107, should point out the strengths and weaknesses of the 2-chamber-organismbypass. Therefore a test facility will be realized and measurements as well as different technical and fish-ecological test will be performed. The technology will be also examined with theoretical investigations and the assessment of experts, so that the field of application and the potential of application can be determined.