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U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5027

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Acknowledgments

Thanks to members of the Clackamas Watershed Management Group, especially Dan Bradley (North Clackamas County Water Commission), John Collins (South Fork Water Board), Michael Grimm and John Thomas (Sunrise Water Authority), Niki Iverson (City of Hillsboro, formerly with Sunrise Water Authority), Gordon McGhee (Clackamas River Water), Andrew Swanson (Clackamas County Water Environment Services), Kim Swan and other members of the Clackamas River Water Providers for contributing direction and funding for this study, and for providing helpful comments on the draft report. A special thanks to the land owners in the Clackamas River basin who provided access for water sample collection. Funding also was provided by the USGS National Water-Quality Assessment (NAWQA) Program, and we gratefully acknowledge Gregory Delzer (NAWQA Source Water-Quality Assessment Coordinator) for his guidance and support. Thanks also to Jessica Hopple and James Kingsbury (USGS), who provided quality-assurance checks for the National SWQA dataset. We also thank Clair Klock and Rick Gruen (Clackamas County Soil and Water Conservation District), Lori Hennings (Portland METRO), Michael Carlson and Jo Anne Dolan (formerly with the Clackamas River Basin Council), whose local knowledge of the Clackamas River basin helped identify land owners willing to participate. Ronald Buck (Clackamas County Road Department) and Will Lackey (Oregon Department of Transportation) provided data on roadside herbicide use. Lori Hennings (Portland METRO), Carol Murdock and Eric Bohard (Clackamas County) provided GIS coverages and aerial photographs used in the plate. Several people from the USGS Oregon Water Science Center contributed to this project, and we gratefully acknowledge Heather Bragg, Scott Deweese, Curt Hughes, Hank Johnson, Dale Melton, Glen Hess, Karl Lee, Adam Stonewall, Rod Owre, Chuck Fisher, Jennifer Morace, Ian Waite, and Daniel Wise for their efforts during the storm sampling events. Lorri Courts and Matt Johnston provided database support and Chauncey Anderson and Joseph Rinella provided valuable input on project planning and data interpretation. Lastly, we wish to thank Sheree Stewart (Drinking Water Protection Coordinator, Oregon Department of Environmental Quality), Joseph Domagalski (Research Hydrologist, USGS California Water Science Center), and Patricia Toccalino (Hydrologist, USGS California Water Science Center) for providing helpful comments on early drafts of the report.

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