OSU researchers to pilot sonar and electrofishing at Depoe Bay net pen; volunteers to host demonstration

Volunteers at the Sept. 29 Depoe Bay meeting said Oregon State University researchers have requested to pilot an experimental sonar system to count fish in floating net pens and plan to bring the equipment to Depoe Bay for an on‑site trial.

Group members said the researchers had difficulties counting fish in laboratory tanks because sonar ricochets off hard tank walls and identified Depoe Bay’s floating net pen as a more suitable field environment. Volunteers agreed to have the net pen set up for a day to allow testing; organizers said they would confirm a date and time once the researchers provide final scheduling.

Meeting participants also said the researchers plan to bring an electrofisher, a standard stream‑survey tool that momentarily stuns fish so they can be counted and examined. Volunteers said the team hopes to sample some lower reaches if hydrologic conditions allow. Volunteers noted that the planned work is a short, single‑day pilot and that the net pen can be set up the evening before if needed for the test.

There was no formal vote to host the pilot; members expressed support and asked organizers to share the confirmed date and time with the group so participants can attend and observe.