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Open-File Report 2014–1112

Prepared in cooperation with the U.S. Army Corps of Engineers

Investigation of Methods for Successful Installation and Operation of Juvenile Salmon Acoustic Telemetry System (JSATS) Hydrophones in the Willamette River, Oregon, 2012

By Gary L. Rutz, Matthew D. Sholtis, Noah S. Adams, and John W. Beeman

Abstract

Acoustic telemetry equipment was installed at three sites in the Willamette River during October 2012 to test the effectiveness of using the Juvenile Salmon Acoustic Telemetry System to monitor the movements of fish in a high-flow, high-velocity riverine environment. Hydrophones installed on concrete blocks were placed on the bottom of the river, and data cables were run from the hydrophones to shore where they were attached to anchor points. Under relatively low-flow conditions (less than approximately 10,000 cubic feet per second) the monitoring system remained in place and could be used to detect tagged fish as they traveled downstream during their seaward migration. At river discharge over approximately 10,000 cubic feet per second, the hydrophones were damaged and cables were lost because of the large volume of woody debris in the river and the increase in water velocity. Damage at two of the sites was sufficient to prevent data collection. A limited amount of data was collected from the equipment at the third site. Site selection and deployment strategies were re-evaluated, and an alternate deployment methodology was designed for implementation in 2013.

First posted June 4, 2014

For additional information, contact:
Director, Western Fisheries Research Center
U.S. Geological Survey
6505 NE 65th Street
Seattle, Washington 98115
http://wfrc.usgs.gov/

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Suggested citation:

Rutz, G.L., Sholtis, M.D., Adams, N.S., and Beeman, J.W., 2014, Investigation of methods for successful installation and operation of Juvenile Salmon Acoustic Telemetry System (JSATS) hydrophones in the Willamette River, Oregon, 2012: U.S. Geological Survey Open-File Report 2013-1112, 18 p., https://dx.doi.org/10.3133/ofr20141112.

ISSN 2331-1258 (online)



Contents

Abstract

Introduction

Methods

Results

Discussion

References Cited


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