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

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An autonomous sensor package used to gather information to characterize downstream passage conditions for fish. The Sensor Fish are deployed in turbines, spillways, and sluiceways and to measure changes in pressure, rotational velocity, temperature, orientation, and linear acceleration during passage.

A structure used to provide the release of flows from a dam into a downstream area. 

An external stimulus that can cause injury or mortality to fish (e.g. changes in pressure).