Acoustic Telemetry Sensor Locations
August 4th, 2009
The Pacific Northwest National Laboratory is conducting acoustic telemetry studies on the lower Columbia River between April 24 and September 20, 2009. The locations of these acoustic receivers was not an issue during the spring Chinook fishery, and only a minor one during the summer Chinook fishery, due to reduced effort during summer fishing in Alaska. However, their locations now take on heightened importance during fall fisheries for fall Chinook, coho, and white sturgeon.
This notice is intended as a timely reminder for Columbia River gillnet fishermen concerning the locations of these sensors. In the vicinity of the Astoria bridge, the majority of the sensors are located in the north channel about 1/10th mile above the bridge. Ryan Harnish, fisheries research scientist, says the sensors are anchored to and float about 10 feet above the bottom. They resemble a piece of yellow pipe. Should any fisherman ”catch” a sensor, please contact Ryan at the Pacific Northwest National Laboratory Ecology Group, 509-371-7239.
The following PDF file shows the locations the telemetry sensors are located:
Proposed points for 2009 acoustic telemetry receivers
