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U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5164

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Acknowledgments

The author is indebted to the many people who provided assistance on this study. Major funding, logistics, and other support came from the U.S. Army Corps of Engineers (USACE), particularly Jim Britton, Tim Sherman, and Patrick O’Brien. Funding for data collection at Hayden Bridge was provided by Karl Morgenstern, Eugene Water and Electric Board, who also helped with infiltration bag installation and retrieval, and provided data. John Haines, Dave Sobale, and Terry Sobecki (USACE) helped with planning and retrieval of the infiltration bags. Chuck Willis (USACE) and Lynne Krasnow (NOAA Fisheries) helped secure permits for the installation and retreival of the infiltration bags, and Mark Wade and crew from the Oregon Department of Fish and Wildlife helped locate spawning gravels for the infiltration bags and on occasion retrieved errant equipment. From the U.S. Forest Service (USFS), Dave Kretzing, Phil Raab, and Jeff Ziller provided data and local assistance. Gordon Grant (USFS), Greg Stewart, Anne Jefferson, Sarah Lewis (Oregon State University), and Sirla Froig provided freeze core data, field assistance, and inspiration. Within USGS, Heather Bragg spent many hours designing and building the infiltration bags, and helped with their installation. Also helping install and (or) retrieve installation bags were Beth Rapp, Charlie Palmer, Troy Blackledge, and Ian Wigger. Sediment sampling was performed in all weather conditions by Ian Wigger, Micelis Doyle, Anna Buckley, and Doug Cushman. Turbidity and discharge monitoring stations were installed and operated by Doug Cushman and Jay Spillum, with oversight from Glen Hess. Jim O’Connor helped understand sediment dynamics with many hours of discussion and site inspections. This manuscript benefited from helpful reviews by Pat Rasmussen (USGS), Greg Stewart (Oregon State University), and Jim Britton and Patrick O’Brien (USACE).

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