Abstract: The invention relates to a device for measuring discharges in partly or completely filled ducts or open channels, utilizing measuring sensors. The device comprises a central simulation system (CS), comprising a numerical model and a high-performance computer and a local measurement and evaluation system (LME) comprising sensors providing measurements of the fluid level or of the pressure head respectively and providing measurements of the flow velocities and comprising a microprocessor providing data evaluation and a data storage device providing the interface between the two subsystems (CS) and (LME).