Acknowledgments

This study was guided by the State of Oregon Technical Team for instream gravel mining, chaired by Judy Linton of the Portland District of the U.S. Army Corps of Engineers, and including representatives from Oregon Department of State Lands, National Oceanic and Atmospheric Administration Fisheries, U.S. Fish and Wildlife Service, Oregon Department of Fish and Wildlife, Oregon Department of Environmental Quality, Oregon Coastal Management Program, and area gravel-mining companies. Surveying and bedload measurements were provided by the Central Point Field Office of the USGS Oregon Water Science Center under the leadership of Marc Stewart with guidance and analysis from Richard Kittelson and Roy Wellman of the Portland Field Office. John Risley of the USGS Oregon Water Science Center assisted with extending the streamflow record and Michelle Adams assisted with field measurements. Information on past gravel mining and access to measurement sites were provided by Tidewater Contractors Inc., South Coast Lumber Inc., and Freeman Rock Inc.; in particular Ted Freeman, Robert Elayer, Bill Yocum, Fred Arnold, and Virgil Frazer were supportive. Ian Madin of the Oregon Department of Geology and Mineral Resources expedited transfer of LIDAR topography for our use. Bedload transport modeling was facilitated by provision of and assistance with the Bedload Assessment for Gravel bed Streams (BAGS) software by John Pitlick, Yantao Cui, and Peter Wilcock. Robyn Darbyshire, U.S. Forest Service, provided assistance with vegetation identification. Mackenzie Keith of the USGS Oregon Water Science Center provided valuable assistance with manuscript preparation. The report was reviewed by Erich Mueller (University of Colorado), Mary Ann Madej (USGS), and William Langer (USGS).

Revised July 2012

First posted May 26, 2010