Below are a list of key terms and definitions related to the HydroPASSAGE project.

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A score that indicates the relative biological performance of a turbine design or operation. The PQI is calculated as a function of both the probability of exposure and the probability of adverse response to that level of exposure and is the main result output from BioPA. A PQI of 500 assumes that passage is expected to have no effect on the fish. The lower the PQI, the larger the adverse effect. 

The continuous physical force exerted against an object. CFD models and Sensor Fish provide estimates of pressure through the hydro turbine environment to indicate where live fish may be subjected to rapid pressure changes. Measured in pascals (Pa).