An evaluation of fish behavior upstream of the water temperature control tower at Cougar Dam, Oregon, using acoustic cameras, 2013
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Abstract
This report describes the initial year of a 2-year study to determine the feasibility of using acoustic cameras to monitor fish movements to help inform decisions about fish passage at Cougar Dam near Springfield, Oregon. Specifically, we used acoustic cameras to measure fish presence, travel speed, and direction adjacent to the water temperature control tower in the forebay of Cougar Dam during the spring (May, June, and July) and fall (September, October, and November) of 2013. Cougar Dam is a high-head flood-control dam, and the water temperature control tower enables depth-specific water withdrawals to facilitate adjustment of water temperatures released downstream of the dam. The acoustic cameras were positioned at the upstream entrance of the tower to monitor free-ranging subyearling and yearling-size juvenile Chinook salmon (Oncorhynchus tshawytscha). Because of the large size discrepancy, we could distinguish juvenile Chinook salmon from their predators, which enabled us to measure predators and prey in areas adjacent to the entrance of the tower. We used linear models to quantify and assess operational and environmental factors—such as time of day, discharge, and water temperature—that may influence juvenile Chinook salmon movements within the beam of the acoustic cameras. Although extensive milling behavior of fish near the structure may have masked directed movement of fish and added unpredictability to fish movement models, the acoustic-camera technology enabled us to ascertain the general behavior of discrete size classes of fish. Fish travel speed, direction of travel, and counts of fish moving toward the water temperature control tower primarily were influenced by the amount of water being discharged through the dam.
Suggested Citation
Adams, N.S., Smith, C.D., Plumb, J.M., Hansen, G.S., and Beeman, J.W., 2015, An evaluation of fish behavior upstream of the water temperature control tower at Cougar Dam, Oregon, using acoustic cameras, 2013: U.S. Geological Survey Open-File Report 2015-1124, 62 p., https://dx.doi.org/10.3133/ofr20151124.
ISSN: 2331-1258 (online)
Study Area
Table of Contents
- Acknowledgments
- Abstract
- Introduction
- Methods
- Results
- Discussion
- References Cited
- Appendix A. Sample Dates Selected for Analysis of DIDSON and ARIS Acoustic Camera Data Collected at the Cougar Reservoir Water Temperature Control (WTC) Tower, Oregon, 2013
- Appendix B. Rose Plots and Circular Histograms of Mean Travel Directions of Fish Collected by Acoustic Cameras by Depth and Photoperiod at Cougar Reservoir and Dam, Oregon
- Appendix C. Density Plots of Fish Target Locations from DIDSON and ARIS Acoustic Camera Data Collected during the Fish Behavior Evaluations at Cougar Reservoir and Dam, Oregon, 2013
Publication type | Report |
---|---|
Publication Subtype | USGS Numbered Series |
Title | An evaluation of fish behavior upstream of the water temperature control tower at Cougar Dam, Oregon, using acoustic cameras, 2013 |
Series title | Open-File Report |
Series number | 2015-1124 |
DOI | 10.3133/ofr20151124 |
Year Published | 2015 |
Language | English |
Publisher | U.S. Geological Survey |
Publisher location | Reston, VA |
Contributing office(s) | Western Fisheries Research Center |
Description | x, 62 p. |
Country | United States |
State | Oregon |
Other Geospatial | Cougar Dam |
Online Only (Y/N) | Y |
Additional Online Files (Y/N) | N |