Jim O'Connor majored in Geological Science at University of Washington and earned M.S. and Ph.D. degrees at University of Arizona. Since 1991, he has worked at the U.S. Geological Survey, intent on improving understanding of the processes and events that shape the remarkable and diverse landscapes of the Pacific Northwest.

• Foreword viiM. G WolmanIntroduction 1Jim E. O’Connor and Gordon E. GrantSection I: Geology, Hydrology and Fish of the Deschutes River BasinIntroduction to Section I 5Overview of Geology, Hydrology, Geomorphology, and Sediment Budget of the Deschutes River Basin, Oregon 7Jim E. O’Connor, Gordon E. Grant, and Tana L. HaluskaGroundwater Hydrology of the Upper Deschutes Basin and Its Influence on Streamflow 31Marshall W. Gannett, Michael Manga, and Kenneth E. Lite, Jr.Controls on the Distribution and Life History of Fish Populations in the Deschutes River: Geology, Hydrology, and Dams 51Christian E. Zimmerman and Donald E. RatliffSection II: The Geomorphology and Flood History of the Lower Deschutes RiverIntroduction to Section II 71Quaternary Geology and Geomorphology of the Lower Deschutes River Canyon, Oregon 73Jim E. O’Connor, Janet H. Curran, Robin A. Beebee, Gordon E. Grant, and Andrei Sarna-WojcickiFormation and Evolution of Valley-Bottom and Channel Features, Lower Deschutes River, Oregon 95Janet H. Curran and Jim E. O’ConnorHolocene Paleoflood Hydrology of the Lower Deschutes River, Oregon 121Kurt J. Hosman, Lisa L. Ely, and Jim E. O’ConnorThe Outhouse Flood: A Large Holocene Flood on the Lower Deschutes River, Oregon 147Robin A. Beebee and Jim E. O’ConnorSection III: Geomorphic Effects of Dams on the Deschutes and Other RiversIntroduction to Section III 167Downstream Effect of the Pelton-Round Butte Hydroelectric Project on Bedload Transport, Channel Morphology, and Channel-Bed Texture, Lower Deschutes River, Oregon 169Heidi Fassnacht, Ellen M. McClure, Gordon E. Grant, and Peter C. KlingemanA Geological Framework for Interpreting Downstream Effects of Dams on Rivers 203Gordon E. Grant, John C. Schmidt, and Sarah L. Lewis

Jim O'Connor majored in Geological Science at University of Washington and earned M.S. and Ph.D. degrees at University of Arizona. Since 1991, he has worked at the U.S. Geological Survey, intent on improving understanding of the processes and events that shape the remarkable and diverse landscapes of the Pacific Northwest.

• Foreword viiM. G WolmanIntroduction 1Jim E. O’Connor and Gordon E. GrantSection I: Geology, Hydrology and Fish of the Deschutes River BasinIntroduction to Section I 5Overview of Geology, Hydrology, Geomorphology, and Sediment Budget of the Deschutes River Basin, Oregon 7Jim E. O’Connor, Gordon E. Grant, and Tana L. HaluskaGroundwater Hydrology of the Upper Deschutes Basin and Its Influence on Streamflow 31Marshall W. Gannett, Michael Manga, and Kenneth E. Lite, Jr.Controls on the Distribution and Life History of Fish Populations in the Deschutes River: Geology, Hydrology, and Dams 51Christian E. Zimmerman and Donald E. RatliffSection II: The Geomorphology and Flood History of the Lower Deschutes RiverIntroduction to Section II 71Quaternary Geology and Geomorphology of the Lower Deschutes River Canyon, Oregon 73Jim E. O’Connor, Janet H. Curran, Robin A. Beebee, Gordon E. Grant, and Andrei Sarna-WojcickiFormation and Evolution of Valley-Bottom and Channel Features, Lower Deschutes River, Oregon 95Janet H. Curran and Jim E. O’ConnorHolocene Paleoflood Hydrology of the Lower Deschutes River, Oregon 121Kurt J. Hosman, Lisa L. Ely, and Jim E. O’ConnorThe Outhouse Flood: A Large Holocene Flood on the Lower Deschutes River, Oregon 147Robin A. Beebee and Jim E. O’ConnorSection III: Geomorphic Effects of Dams on the Deschutes and Other RiversIntroduction to Section III 167Downstream Effect of the Pelton-Round Butte Hydroelectric Project on Bedload Transport, Channel Morphology, and Channel-Bed Texture, Lower Deschutes River, Oregon 169Heidi Fassnacht, Ellen M. McClure, Gordon E. Grant, and Peter C. KlingemanA Geological Framework for Interpreting Downstream Effects of Dams on Rivers 203Gordon E. Grant, John C. Schmidt, and Sarah L. Lewis

Jim O'Connor majored in Geological Science at University of Washington and earned M.S. and Ph.D. degrees at University of Arizona. Since 1991, he has worked at the U.S. Geological Survey, intent on improving understanding of the processes and events that shape the remarkable and diverse landscapes of the Pacific Northwest.

• Foreword viiM. G WolmanIntroduction 1Jim E. O’Connor and Gordon E. GrantSection I: Geology, Hydrology and Fish of the Deschutes River BasinIntroduction to Section I 5Overview of Geology, Hydrology, Geomorphology, and Sediment Budget of the Deschutes River Basin, Oregon 7Jim E. O’Connor, Gordon E. Grant, and Tana L. HaluskaGroundwater Hydrology of the Upper Deschutes Basin and Its Influence on Streamflow 31Marshall W. Gannett, Michael Manga, and Kenneth E. Lite, Jr.Controls on the Distribution and Life History of Fish Populations in the Deschutes River: Geology, Hydrology, and Dams 51Christian E. Zimmerman and Donald E. RatliffSection II: The Geomorphology and Flood History of the Lower Deschutes RiverIntroduction to Section II 71Quaternary Geology and Geomorphology of the Lower Deschutes River Canyon, Oregon 73Jim E. O’Connor, Janet H. Curran, Robin A. Beebee, Gordon E. Grant, and Andrei Sarna-WojcickiFormation and Evolution of Valley-Bottom and Channel Features, Lower Deschutes River, Oregon 95Janet H. Curran and Jim E. O’ConnorHolocene Paleoflood Hydrology of the Lower Deschutes River, Oregon 121Kurt J. Hosman, Lisa L. Ely, and Jim E. O’ConnorThe Outhouse Flood: A Large Holocene Flood on the Lower Deschutes River, Oregon 147Robin A. Beebee and Jim E. O’ConnorSection III: Geomorphic Effects of Dams on the Deschutes and Other RiversIntroduction to Section III 167Downstream Effect of the Pelton-Round Butte Hydroelectric Project on Bedload Transport, Channel Morphology, and Channel-Bed Texture, Lower Deschutes River, Oregon 169Heidi Fassnacht, Ellen M. McClure, Gordon E. Grant, and Peter C. KlingemanA Geological Framework for Interpreting Downstream Effects of Dams on Rivers 203Gordon E. Grant, John C. Schmidt, and Sarah L. Lewis