The purpose of this project was to monitor juvenile
salmonids during a flow pulse event on the Lower American River. The pulse occurred during the 2014
drought, and was a management action intended to initiate downstream migration of Chinook salmon
that were stranded in shallow off-channel habitats. We used video monitoring to compare juvenile
abundance and movement patterns (downstream, upstream, and holding) in a shallow side channel before,
during and after the pulse event and found that:
- downstream migration was more common than upstream migration and holding during the flow pulse
- fish abundance was lower following the pulse.
These results indicate that the flow pulse was effective in moving juveniles out of the side channel.