Salmon counts at the Big Bar landslide site

The following table highlights fish movement below and above the Big Bar landslide site in 2022, including the number of fish transported by technical crews, if required. Two types of monitoring are used to track fish passage at Big Bar: hydroacoustic sonars and radio tagging. More information about these methods is available here.

A number of factors can impact migration timing, including flow levels and river velocities, water temperature and weather. In 2022, migration is expected to vary greatly during periods of moderate and high flows.

To minimize handling and risk to fish health, “trap and transport” operations will only occur when fish are unable to migrate past the Big Bar canyon on their own. Mechanical issues, site safety and road conditions may also impact operations.

Data is updated Monday through Friday, on a 24-hour delay. Weekend data is reported on the following Monday. Due to potential challenges gathering data, the table below may not exactly reflect actual fish movement for a particular period.