Residual Flow Study and Structual Measures at Fritzbach

Determination of the residual flow (minimum dotation) that is necessary to fulfil the requirements of the Austrian Water Law and the European Water Framework Directive. Development of structural and compensation measures.

River length approx. 9.5 km

Determination of the residual flow volume in accordance with the biotope discharge approach. This is realised in this project using a 2-D hydraulic model because a 2-D hydraulics approach enables a substantially more detailed study of the area-specific characteristics than the 1-D approaches that are used as standard.

The situation for the Huchen during the spawning season in the lower course of the Fritzbach was also taken into account and structural and compensation measures were developed.

Accompanying planning/analyses within the framework of the design submitted for Fritzbach power plant.

Additional surveying, hydraulic modelling, determination of calibration data (water level / discharge), determination of residual flow volume (minimum dotation), development of structural and offset measures, meandering ramp concept