The Alsea Logging and Aquatic Resources Study, commissioned by the Oregon Legislature in 1959, marked the beginning of four decades of research in the Pacific Northwest devoted to understanding the impacts of forest practices on water quality, water quantity, aquatic habitat, and aquatic organism popu- tions. While earlier watershed research examined changes in runoff and erosion from various land uses, this study was the first watershed experiment to focus so heavily on aquatic habitat and organism response to forest practices. The Alsea Watershed Study, as it came to be known, extended over 15 years with seven years of pretreatment calibration measurements, a year of treatment, and seven years of post-treatment monitoring. The research was a cooperative effort with scientists from Oregon State University, Oregon Department of Fish and Wildlife, the U.S. Geological Survey, and the U.S. Environmental Protection Agency. Cooperating landowners included the Georgia-Pacific Corporation, the U.S. Forest Service, and a local rancher. It was a remarkable 15-year partnership marked by excellent cooperation among the participants and outstanding coordination among the scientists, many of whom participated actively for the entire period.
Table of ContentsThe Alsea Watershed Study: Hydrological and Biological Responses to Forest Practices Chapter 1. The Alsea Watershed Study James D. Hall and John D. Stednick Chapter 2. Effects of Timber Harvesting on Streamflow in the Alsea Watershed Study John D. Stednick Chapter 3. Stream Temperature and Dissolved Oxygen George G. Ice Chapter 4. Sediment Studies in the Alsea Watershed Study Robert C. Beschta and William L. Jackson Chapter 5. Salmonid Populations and Habitat James D. Hall Chapter 6. The Oregon Forest Practices Act and Forest Research Anne Hairston-Strang, Paul W. Adams, and George G. Ice Chapter 7. The New Alsea Watershed Study John D. Stednick Chapter 8. Flynn Creek: Research Natural Area Arthur McKee and Sarah Greene Chapter 9. Long Term Streamflow Changes Following Timber Harvesting John D. Stednick Chapter 10. Long Term Water Quality Changes Following Timber Harvesting John D. Stednick Chapter 11. Risk Assessment for Salmon From Water Quality Changes Following Timber Harvesting John D. Stednick and T. J. Kern Chapter 12. Sedimentation Studies Following the Alsea Watershed Study Robert L. Beschta and William L. Jackson Chapter 13. Woody Debris from the Streamside Forest and Its Influence on Fish Habitat C. W. Andrus Chapter 14. Long Term Trends in Habitat and Fish Populations in the Alsea Basin Stanley V. Gregory, John S. Schwartz, James D. Hall, Randall C. Wildman, and Peter A. Bisson Chapter 15. The AlseaWatershed Study: A comparison with other multi-year investigations in the Pacific Northwest Peter A Bisson, Stanley V. Gregory, Thomas E. Nickelson, and James D. Hall Chapter 16. Watershed Management Paul W. Adams Chapter 17. Research Opportunities in Hydrology and Biology in Future Watershed Studies John D. Stednick